GE

Digital Energy

Multilin™ EPM 2200

Power Meter

Instruction Manual
Software Revision: 1.0x
Manual P/N: 1601- 9111-A4
Manual Order Code: GEK-113575C

LISTED

*1601-911-A4*
 Copyright © 2015 GE Multilin Inc. All rights reserved.
EPM 2200 Power Meter Instruction Manual for product revision 1.0x.
The contents of this manual are the property of GE Multilin Inc. This documentation is
furnished on license and may not be reproduced in whole or in part without the permission
of GE Multilin. The manual is for informational use only and is subject to change without
notice.
Part number: 1601-9111-A4 (November 2015)

ii
 GENERAL SAFETY PRECAUTIONS - EPM 2200
Note

• Failure to observe and follow the instructions provided in the equipment manual(s)
could cause irreversible damage to the equipment and could lead to property
damage, personal injury and/or death.
• Before attempting to use the equipment, it is important that all danger and
caution indicators are reviewed.
• If the equipment is used in a manner not specified by the manufacturer or
functions abnormally, proceed with caution. Otherwise, the protection provided by
the equipment may be impaired and can result in Impaired operation and injury.
• Caution: Hazardous voltages can cause shock, burns or death.
• Installation/service personnel must be familiar with general device test practices,
electrical awareness and safety precautions must be followed.
• Before performing visual inspections, tests, or periodic maintenance on this device
or associated circuits, isolate or disconnect all hazardous live circuits and sources
of electric power.
• Failure to shut equipment off prior to removing the power connections could
expose you to dangerous voltages causing injury or death.
• All recommended equipment that should be grounded and must have a reliable
and un-compromised grounding path for safety purposes, protection against
electromagnetic interference and proper device operation.
• Equipment grounds should be bonded together and connected to the facility’s
main ground system for primary power.
• Keep all ground leads as short as possible.
• At all times, equipment ground terminal must be grounded during device
operation and service.
• In addition to the safety precautions mentioned all electrical connections made
must respect the applicable local jurisdiction electrical code.
• Before working on CTs, they must be short-circuited.
• To be certified for revenue metering, power providers and utility companies must
verify that the billing energy meter performs to the stated accuracy. To confirm the
meter’s performance and calibration, power providers use field test standards to
ensure that the unit’s energy measurements are correct.

This product cannot be disposed of as unsorted municipal waste in the European

Union. For proper recycling return this product to your supplier or a designated
collection point. For more information go to www.recyclethis.info.

iii
 Safety words and definitions
The following symbols used in this document indicate the following conditions

Indicates a hazardous situation which, if not avoided, will result in death or serious
Note

injury.

Indicates a hazardous situation which, if not avoided, could result in death or serious
Note

injury.

Indicates a hazardous situation which, if not avoided, could result in minor or

Note

moderate injury.

Indicates practices not related to personal injury.

Note

Indicates general information and practices, including operational information, that

Note

are not related to personal injury.

NOTE

For further assistance

For product support, contact the information and call center as follows:
GE Digital Energy
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Worldwide telephone: +1 905 927 7070
Europe/Middle East/Africa telephone: +34 94 485 88 54
North America toll-free: 1 800 547 8629
Fax: +1 905 927 5098
Worldwide e-mail: multilin.tech@ge.com
Europe e-mail: multilin.tech.euro@ge.com
Website: http://www.gedigitalenergy.com/multilin

Warranty
For products shipped as of 1 October 2013, GE Digital Energy warrants most of its GE
manufactured products for 10 years. For warranty details including any limitations and
disclaimers, see the GE Digital Energy Terms and Conditions at
https://www.gedigitalenergy.com/multilin/warranty.htm
For products shipped before 1 October 2013, the standard 24-month warranty applies.

iv
 Table of Contents

1: THREE-PHASE POWER THREE PHASE SYSTEM CONFIGURATIONS ........................................................................... 1-1

MEASUREMENT WYE CONNECTION .......................................................................................................................... 1-1
DELTA CONNECTION ...................................................................................................................... 1-3
BLONDEL’S THEOREM AND THREE PHASE MEASUREMENT ......................................... 1-4
POWER, ENERGY AND DEMAND ............................................................................................... 1-6
REACTIVE ENERGY AND POWER FACTOR ............................................................................. 1-9
HARMONIC DISTORTION .............................................................................................................. 1-11
POWER QUALITY .............................................................................................................................. 1-13

2: OVERVIEW AND HARDWARE OVERVIEW ................................................................................................................. 2-1

SPECIFICATIONS VOLTAGE AND CURRENT INPUTS ...................................................................................... 2-2
ORDER CODES ..................................................................................................................... 2-2
MEASURED VALUES ............................................................................................................ 2-3
UTILITY PEAK DEMAND ....................................................................................................... 2-3
SPECIFICATIONS ............................................................................................................................... 2-4
COMPLIANCE ..................................................................................................................................... 2-7
ACCURACY .......................................................................................................................................... 2-8

3: MECHANICAL INTRODUCTION ................................................................................................................................ 3-1

INSTALLATION ANSI INSTALLATION STEPS .......................................................................................................... 3-2
DIN INSTALLATION STEPS ........................................................................................................... 3-3

4: ELECTRICAL CONSIDERATIONS WHEN INSTALLING METERS ................................................................. 4-1

INSTALLATION CT LEADS TERMINATED TO METER ................................................................................... 4-2
CT LEADS PASS-THROUGH (NO METER TERMINATION) ................................................ 4-3
QUICK CONNECT CRIMP CT TERMINATIONS ................................................................... 4-5
VOLTAGE AND POWER SUPPLY CONNECTIONS .............................................................. 4-6
GROUND CONNECTIONS .................................................................................................... 4-6
VOLTAGE FUSES .................................................................................................................. 4-6
ELECTRICAL CONNECTION DIAGRAMS .................................................................................. 4-7
DESCRIPTION ........................................................................................................................ 4-7
(1) WYE, 4-WIRE WITH NO PTS AND 3 CTS, NO PTS, 3 ELEMENT ............................ 4-8
(2) WYE, 4-WIRE WITH NO PTS AND 3 CTS, 2.5 ELEMENT ........................................ 4-11
(3) WYE, 4-WIRE WITH 3 PTS AND 3 CTS, 3 ELEMENT .............................................. 4-12
(4) WYE, 4-WIRE WITH 2 PTS AND 3 CTS, 2.5 ELEMENT ........................................... 4-13
(5) DELTA, 3-WIRE WITH NO PTS, 2 CTS ....................................................................... 4-14
(6) DELTA, 3-WIRE WITH 2 PTS, 2 CTS ......................................................................... 4-15
(7) DELTA, 3-WIRE WITH 2 PTS, 3 CTS ......................................................................... 4-16
(8) CURRENT-ONLY MEASUREMENT (THREE-PHASE) .................................................... 4-17
(9) CURRENT-ONLY MEASUREMENT (DUAL-PHASE) ...................................................... 4-18
(10) CURRENT-ONLY MEASUREMENT (SINGLE-PHASE) ................................................ 4-19

5: COM OPTION S: CONNECTING TO THE RS485/KYZ OUTPUT PORT ............................................................. 5-1

MODBUS/KYZ OUTPUT

EPM 2200 POWER METER – INSTRUCTION MANUAL TOC–1

6: USING THE METER PROGRAMMING USING THE FACEPLATE ............................................................................... 6-1
METER FACE ELEMENTS ..................................................................................................... 6-2
METER FACE BUTTONS ....................................................................................................... 6-2
START UP .............................................................................................................................. 6-3
MAIN MENU ........................................................................................................................ 6-4
RESET MODE ....................................................................................................................... 6-4
ENTER PASSWORD (IF ENABLED) ....................................................................................... 6-5
CONFIGURATION MODE ...................................................................................................... 6-6
CONFIGURING THE SCROLL FEATURE ............................................................................... 6-8
CONFIGURING THE CT SETTING ........................................................................................ 6-9
CONFIGURING THE PT SETTING ........................................................................................ 6-10
CONFIGURING THE CONNECTION (CNCT) SETTING ......................................................... 6-11
CONFIGURING THE COMMUNICATION PORT SETTINGS .................................................. 6-12
OPERATING MODE ............................................................................................................... 6-14
% OF LOAD BAR ............................................................................................................................... 6-15
WATT-HOUR ACCURACY TESTING (VERIFICATION) ........................................................... 6-15
INFRARED & KYZ PULSE CONSTANTS FOR ACCURACY TESTING ................................. 6-16
GE COMMUNICATOR PROGRAMMING OVERVIEW ............................................................ 6-17
FACTORY INITIAL DEFAULT SETTINGS ............................................................................... 6-17
HOW TO CONNECT USING GE COMMUNICATOR SOFTWARE ...................................... 6-17
DEVICE PROFILE SETTINGS ................................................................................................. 6-20

7: COM OPTION B: BACNET MS/TP .................................................................................................................................. 7-1

BACNET MS/TP WITH EPM 2200 METER BACNET OBJECTS ....................................................................................... 7-2
MODBUS TCP/IP CONFIGURING COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP ................. 7-3
RESETTING THE ETHERNET CARD ...................................................................................... 7-10
USING THE EPM 2200 METER’S WEB INTERFACE .............................................................. 7-10
HOME WEB PAGE ................................................................................................................. 7-10
BACNET OBJECTS STATUS WEB PAGE ............................................................................. 7-12
CHANGE PASSWORD WEB PAGE ....................................................................................... 7-13
STATISTICS WEB PAGE ......................................................................................................... 7-13
RESET CONFIGURATION WEB PAGE ................................................................................... 7-14
USING THE EPM 2200 IN A BACNET APPLICATION ........................................................... 7-14

A: EPM 2200 INTRODUCTION ................................................................................................................................ A-1

NAVIGATION MAPS NAVIGATION MAPS (SHEETS 1 TO 4) ........................................................................................ A-1
EPM 2200 NAVIGATION MAP TITLES: ............................................................................ A-1

B: MODBUS MAPPING INTRODUCTION ................................................................................................................................ B-1

FOR EPM 2200 MODBUS REGISTER MAP SECTIONS ........................................................................................ B-1
DATA FORMATS ............................................................................................................................... B-2
FLOATING POINT VALUES ........................................................................................................... B-2
MODBUS REGISTER MAP .............................................................................................................. B-3

C: MANUAL REVISION RELEASE NOTES ................................................................................................................................ C-1

HISTORY

TOC–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 1: Three-Phase Power

Measurement

Three-Phase Power Measurement

This introduction to three-phase power and power measurement is intended to

provide only a brief overview of the subject. The professional meter engineer or meter
technician should refer to more advanced documents such as the EEI Handbook for
Electricity Metering and the application standards for more in-depth and technical
coverage of the subject.

1.1 Three Phase System Configurations

Three-phase power is most commonly used in situations where large amounts of
power will be used because it is a more effective way to transmit the power and
because it provides a smoother delivery of power to the end load. There are two
commonly used connections for three-phase power, a wye connection or a delta
connection. Each connection has several different manifestations in actual use.
When attempting to determine the type of connection in use, it is a good practice to
follow the circuit back to the transformer that is serving the circuit. It is often not
possible to conclusively determine the correct circuit connection simply by counting
the wires in the service or checking voltages. Checking the transformer connection will
provide conclusive evidence of the circuit connection and the relationships between
the phase voltages and ground.

1.2 Wye Connection

The wye connection is so called because when you look at the phase relationships and
the winding relationships between the phases it looks like a Y. Figure 1.1 depicts the
winding relationships for a wye-connected service. In a wye service the neutral (or
center point of the wye) is typically grounded. This leads to common voltages of 208/
120 and 480/277 (where the first number represents the phase-to-phase voltage and
the second number represents the phase-to-ground voltage).

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–1

WYE CONNECTION CHAPTER 1: THREE-PHASE POWER MEASUREMENT

VC

Phase 3

N
Phase 2 Phase 1

VB VA
Figure 1-1: Three-phase Wye Winding
The three voltages are separated by 120o electrically. Under balanced load conditions
the currents are also separated by 120o. However, unbalanced loads and other
conditions can cause the currents to depart from the ideal 120o separation. Three-
phase voltages and currents are usually represented with a phasor diagram. A phasor
diagram for the typical connected voltages and currents is shown in Figure 1.2.

Figure 1-2: Phasor Diagram Showing Three-phase Voltages and Currents

The phasor diagram shows the 120o angular separation between the phase voltages.
The phase-to-phase voltage in a balanced three-phase wye system is 1.732 times the
phase-to-neutral voltage. The center point of the wye is tied together and is typically
grounded. Table 1.1 shows the common voltages used in the United States for wye-
connected systems.
Table 1.1: Common Phase Voltages on Wye Services
Phase to Ground Voltage Phase to Phase Voltage
120 volts 208 volts
277 volts 480 volts
2,400 volts 4,160 volts
7,200 volts 12,470 volts

1–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 1: THREE-PHASE POWER MEASUREMENT DELTA CONNECTION

Table 1.1: Common Phase Voltages on Wye Services

Phase to Ground Voltage Phase to Phase Voltage
7,620 volts 13,200 volts

Usually a wye-connected service will have four wires: three wires for the phases and
one for the neutral. The three-phase wires connect to the three phases (as shown in
Figure 1.1). The neutral wire is typically tied to the ground or center point of the wye.
In many industrial applications the facility will be fed with a four-wire wye service but
only three wires will be run to individual loads. The load is then often referred to as a
delta-connected load but the service to the facility is still a wye service; it contains
four wires if you trace the circuit back to its source (usually a transformer). In this type
of connection the phase to ground voltage will be the phase-to-ground voltage
indicated in Table 1, even though a neutral or ground wire is not physically present at
the load. The transformer is the best place to determine the circuit connection type
because this is a location where the voltage reference to ground can be conclusively
identified.

1.3 Delta Connection

Delta-connected services may be fed with either three wires or four wires. In a three-
phase delta service the load windings are connected from phase-to-phase rather
than from phase-to-ground. Figure 1.3 shows the physical load connections for a
delta service.

VC

Phase 2 Phase 3

VB Phase 1 VA

Figure 1-3: Three-phase Delta Winding Relationship

In this example of a delta service, three wires will transmit the power to the load. In a
true delta service, the phase-to-ground voltage will usually not be balanced because
the ground is not at the center of the delta.
Figure 1.4 shows the phasor relationships between voltage and current on a three-
phase delta circuit.
In many delta services, one corner of the delta is grounded. This means the phase to
ground voltage will be zero for one phase and will be full phase-to-phase voltage for
the other two phases. This is done for protective purposes.

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–3

BLONDEL’S THEOREM AND THREE PHASE MEASUREMENT CHAPTER 1: THREE-PHASE POWER MEASUREMENT

VBC IC VCA

IA
IB

VAB
Figure 1-4: Phasor Diagram, Three-Phase Voltages and Currents, Delta-Connected
Another common delta connection is the four-wire, grounded delta used for lighting
loads. In this connection the center point of one winding is grounded. On a 120/240
volt, four-wire, grounded delta service the phase-to-ground voltage would be 120
volts on two phases and 208 volts on the third phase. Figure 1.5 shows the phasor
diagram for the voltages in a three-phase, four-wire delta system.
VC

VCA

VBC N VA

VAB

VB
Figure 1-5: Phasor Diagram Showing Three-phase Four-Wire Delta-Connected System

1.4 Blondel’s Theorem and Three Phase Measurement

In 1893 an engineer and mathematician named Andre E. Blondel set forth the first
scientific basis for polyphase metering. His theorem states:
If energy is supplied to any system of conductors through N wires, the total power in
the system is given by the algebraic sum of the readings of N wattmeters so arranged
that each of the N wires contains one current coil, the corresponding potential coil
being connected between that wire and some common point. If this common point is
on one of the N wires, the measurement may be made by the use of N-1 Wattmeters.

1–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 1: THREE-PHASE POWER MEASUREMENT BLONDEL’S THEOREM AND THREE PHASE MEASUREMENT

The theorem may be stated more simply, in modern language:

In a system of N conductors, N-1 meter elements will measure the power or energy
taken provided that all the potential coils have a common tie to the conductor in
which there is no current coil.
Three-phase power measurement is accomplished by measuring the three individual
phases and adding them together to obtain the total three phase value. In older
analog meters, this measurement was accomplished using up to three separate
elements. Each element combined the single-phase voltage and current to produce a
torque on the meter disk. All three elements were arranged around the disk so that the
disk was subjected to the combined torque of the three elements. As a result the disk
would turn at a higher speed and register power supplied by each of the three wires.
According to Blondel's Theorem, it was possible to reduce the number of elements
under certain conditions. For example, a three-phase, three-wire delta system could
be correctly measured with two elements (two potential coils and two current coils) if
the potential coils were connected between the three phases with one phase in
common.
In a three-phase, four-wire wye system it is necessary to use three elements. Three
voltage coils are connected between the three phases and the common neutral
conductor. A current coil is required in each of the three phases.
In modern digital meters, Blondel's Theorem is still applied to obtain proper
metering. The difference in modern meters is that the digital meter measures each
phase voltage and current and calculates the single-phase power for each phase. The
meter then sums the three phase powers to a single three-phase reading.
Some digital meters measure the individual phase power values one phase at a time.
This means the meter samples the voltage and current on one phase and calculates a
power value. Then it samples the second phase and calculates the power for the
second phase. Finally, it samples the third phase and calculates that phase power.
After sampling all three phases, the meter adds the three readings to create the
equivalent three-phase power value. Using mathematical averaging techniques, this
method can derive a quite accurate measurement of three-phase power.
More advanced meters actually sample all three phases of voltage and current
simultaneously and calculate the individual phase and three-phase power values. The
advantage of simultaneous sampling is the reduction of error introduced due to the
difference in time when the samples were taken.

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–5

POWER, ENERGY AND DEMAND CHAPTER 1: THREE-PHASE POWER MEASUREMENT

B
Phase B

Phase C

Node "n"

Phase A

A
N

Figure 1-6: Three-Phase Wye Load Illustrating Kirchoff’s Law and Blondel’s Theorem
Blondel's Theorem is a derivation that results from Kirchoff's Law. Kirchoff's Law states
that the sum of the currents into a node is zero. Another way of stating the same thing
is that the current into a node (connection point) must equal the current out of the
node. The law can be applied to measuring three-phase loads. Figure 1.6 shows a
typical connection of a three-phase load applied to a three-phase, four-wire service.
Kirchoff's Law holds that the sum of currents A, B, C and N must equal zero or that the
sum of currents into Node "n" must equal zero.
If we measure the currents in wires A, B and C, we then know the current in wire N by
Kirchoff's Law and it is not necessary to measure it. This fact leads us to the
conclusion of Blondel's Theorem- that we only need to measure the power in three of
the four wires if they are connected by a common node. In the circuit of Figure 1.6 we
must measure the power flow in three wires. This will require three voltage coils and
three current coils (a three-element meter). Similar figures and conclusions could be
reached for other circuit configurations involving Delta-connected loads.

1.5 Power, Energy and Demand

It is quite common to exchange power, energy and demand without differentiating
between the three. Because this practice can lead to confusion, the differences
between these three measurements will be discussed.
Power is an instantaneous reading. The power reading provided by a meter is the
present flow of watts. Power is measured immediately just like current. In many digital
meters, the power value is actually measured and calculated over a one second
interval because it takes some amount of time to calculate the RMS values of voltage
and current. But this time interval is kept small to preserve the instantaneous nature
of power.
Energy is always based on some time increment; it is the integration of power over a
defined time increment. Energy is an important value because almost all electric bills
are based, in part, on the amount of energy used.

1–6 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 1: THREE-PHASE POWER MEASUREMENT POWER, ENERGY AND DEMAND

Typically, electrical energy is measured in units of kilowatt-hours (kWh). A kilowatt-

hour represents a constant load of one thousand watts (one kilowatt) for one hour.
Stated another way, if the power delivered (instantaneous watts) is measured as 1,000
watts and the load was served for a one hour time interval then the load would have
absorbed one kilowatt-hour of energy. A different load may have a constant power
requirement of 4,000 watts. If the load were served for one hour it would absorb four
kWh. If the load were served for 15 minutes it would absorb ¼ of that total or one
kWh.
Figure 1.7 shows a graph of power and the resulting energy that would be transmitted
as a result of the illustrated power values. For this illustration, it is assumed that the
power level is held constant for each minute when a measurement is taken. Each bar
in the graph will represent the power load for the one-minute increment of time. In
real life the power value moves almost constantly.
The data from Figure 1.7 is reproduced in Table 1.2 to illustrate the calculation of
energy. Since the time increment of the measurement is one minute and since we
specified that the load is constant over that minute, we can convert the power
reading to an equivalent consumed energy reading by multiplying the power reading
times 1/60 (converting the time base from minutes to hours).

80

70

60
kilowat t s

50

40

30

20

10

0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Time (minutes)
Figure 1-7: Power Use over Time

Table 1.2: Power and Energy Relationship over Time

Time Interval Power (kW) Energy (kWh) Accumulated Energy
(minute) (kWh)
1 30 0.50 0.50
2 50 0.83 1.33
3 40 0.67 2.00
4 55 0.92 2.92
5 60 1.00 3.92
6 60 1.00 4.92

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–7

POWER, ENERGY AND DEMAND CHAPTER 1: THREE-PHASE POWER MEASUREMENT

Table 1.2: Power and Energy Relationship over Time

Time Interval Power (kW) Energy (kWh) Accumulated Energy
(minute) (kWh)
7 70 1.17 6.09
8 70 1.17 7.26
9 60 1.00 8.26
10 70 1.17 9.43
11 80 1.33 10.76
12 50 0.83 12.42
13 50 0.83 12.42
14 70 1.17 13.59
15 80 1.33 14.92

As in Table 1.2, the accumulated energy for the power load profile of Figure 1.7 is
14.92 kWh.
Demand is also a time-based value. The demand is the average rate of energy use
over time. The actual label for demand is kilowatt-hours/hour but this is normally
reduced to kilowatts. This makes it easy to confuse demand with power, but demand
is not an instantaneous value. To calculate demand it is necessary to accumulate the
energy readings (as illustrated in Figure 1.7) and adjust the energy reading to an
hourly value that constitutes the demand.
In the example, the accumulated energy is 14.92 kWh. But this measurement was
made over a 15-minute interval. To convert the reading to a demand value, it must be
normalized to a 60-minute interval. If the pattern were repeated for an additional
three 15-minute intervals the total energy would be four times the measured value or
59.68 kWh. The same process is applied to calculate the 15-minute demand value.
The demand value associated with the example load is 59.68 kWh/hr or 59.68 kWd.
Note that the peak instantaneous value of power is 80 kW, significantly more than the
demand value.
Figure 1.8 shows another example of energy and demand. In this case, each bar
represents the energy consumed in a 15-minute interval. The energy use in each
interval typically falls between 50 and 70 kWh. However, during two intervals the
energy rises sharply and peaks at 100 kWh in interval number 7. This peak of usage
will result in setting a high demand reading. For each interval shown the demand
value would be four times the indicated energy reading. So interval 1 would have an
associated demand of 240 kWh/hr. Interval 7 will have a demand value of 400 kWh/
hr. In the data shown, this is the peak demand value and would be the number that
would set the demand charge on the utility bill.

1–8 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 1: THREE-PHASE POWER MEASUREMENT REACTIVE ENERGY AND POWER FACTOR

100

80

kilowat t-hours
60

40

20

0
1 2 3 4 5 6 7 8
Intervals (15 mins.)

Figure 1-8: Energy Use and Demand

As can be seen from this example, it is important to recognize the relationships
between power, energy and demand in order to control loads effectively or to monitor
use correctly.

1.6 Reactive Energy and Power Factor

The real power and energy measurements discussed in the previous section relate to
the quantities that are most used in electrical systems. But it is often not sufficient to
only measure real power and energy. Reactive power is a critical component of the
total power picture because almost all real-life applications have an impact on
reactive power. Reactive power and power factor concepts relate to both load and
generation applications. However, this discussion will be limited to analysis of reactive
power and power factor as they relate to loads. To simplify the discussion, generation
will not be considered.
Real power (and energy) is the component of power that is the combination of the
voltage and the value of corresponding current that is directly in phase with the
voltage. However, in actual practice the total current is almost never in phase with the
voltage. Since the current is not in phase with the voltage, it is necessary to consider
both the inphase component and the component that is at quadrature (angularly
rotated 90o or perpendicular) to the voltage. Figure 1.9 shows a single-phase voltage
and current and breaks the current into its in-phase and quadrature components.

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–9

REACTIVE ENERGY AND POWER FACTOR CHAPTER 1: THREE-PHASE POWER MEASUREMENT

IR V

IX I

Figure 1-9: Voltage and Complex Current

The voltage (V) and the total current (I) can be combined to calculate the apparent
power or VA. The voltage and the in-phase current (IR) are combined to produce the
real power or watts. The voltage and the quadrature current (IX) are combined to
calculate the reactive power.
The quadrature current may be lagging the voltage (as shown in Figure 1.9) or it may
lead the voltage. When the quadrature current lags the voltage the load is requiring
both real power (watts) and reactive power (VARs). When the quadrature current leads
the voltage the load is requiring real power (watts) but is delivering reactive power
(VARs) back into the system; that is VARs are flowing in the opposite direction of the
real power flow.
Reactive power (VARs) is required in all power systems. Any equipment that uses
magnetization to operate requires VARs. Usually the magnitude of VARs is relatively
low compared to the real power quantities. Utilities have an interest in maintaining
VAR requirements at the customer to a low value in order to maximize the return on
plant invested to deliver energy. When lines are carrying VARs, they cannot carry as
many watts. So keeping the VAR content low allows a line to carry its full capacity of
watts. In order to encourage customers to keep VAR requirements low, some utilities
impose a penalty if the VAR content of the load rises above a specified value.
A common method of measuring reactive power requirements is power factor. Power
factor can be defined in two different ways. The more common method of calculating
power factor is the ratio of the real power to the apparent power. This relationship is
expressed in the following formula:
Total PF = real power / apparent power = watts/VA
This formula calculates a power factor quantity known as Total Power Factor. It is
called Total PF because it is based on the ratios of the power delivered. The delivered
power quantities will include the impacts of any existing harmonic content. If the
voltage or current includes high levels of harmonic distortion the power values will be
affected. By calculating power factor from the power values, the power factor will
include the impact of harmonic distortion. In many cases this is the preferred method
of calculation because the entire impact of the actual voltage and current are
included.

1–10 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 1: THREE-PHASE POWER MEASUREMENT HARMONIC DISTORTION

A second type of power factor is Displacement Power Factor. Displacement PF is

based on the angular relationship between the voltage and current. Displacement
power factor does not consider the magnitudes of voltage, current or power. It is solely
based on the phase angle differences. As a result, it does not include the impact of
harmonic distortion. Displacement power factor is calculated using the following
equation:
Displacement PF = cos θ

where θ is the angle between the voltage and the current (see Fig. 1.9).
In applications where the voltage and current are not distorted, the Total Power
Factor will equal the Displacement Power Factor. But if harmonic distortion is present,
the two power factors will not be equal.

1.7 Harmonic Distortion

Harmonic distortion is primarily the result of high concentrations of non-linear loads.
Devices such as computer power supplies, variable speed drives and fluorescent light
ballasts make current demands that do not match the sinusoidal waveform of AC
electricity. As a result, the current waveform feeding these loads is periodic but not
sinusoidal. Figure 1.10 shows a normal, sinusoidal current waveform. This example
has no distortion.
1000

500
Amps

0 Time

– 500

– 1000

Figure 1-10: Nondistorted Current Waveform

Figure 1.11 shows a current waveform with a slight amount of harmonic distortion.
The waveform is still periodic and is fluctuating at the normal 60 Hz frequency.
However, the waveform is not a smooth sinusoidal form as seen in Figure 1.10.

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–11

HARMONIC DISTORTION CHAPTER 1: THREE-PHASE POWER MEASUREMENT

1500

1000

500

Current (amps)
0 t
a 2a

–500

–1000

–1500

Figure 1-11: Distorted Current Waveform

The distortion observed in Figure 1.11 can be modeled as the sum of several
sinusoidal waveforms of frequencies that are multiples of the fundamental 60 Hz
frequency. This modeling is performed by mathematically disassembling the distorted
waveform into a collection of higher frequency waveforms.
These higher frequency waveforms are referred to as harmonics. Figure 1.12 shows
the content of the harmonic frequencies that make up the distortion portion of the
waveform in Figure 1.11.

1000

500
Amps

0 Time

3rd harmonic
– 500 5th harmonic
7th harmonic
Total
fundamental

Figure 1-12: Waveforms of the Harmonics

The waveforms shown in Figure 1.12 are not smoothed but do provide an indication of
the impact of combining multiple harmonic frequencies together.
When harmonics are present it is important to remember that these quantities are
operating at higher frequencies. Therefore, they do not always respond in the same
manner as 60 Hz values.

1–12 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 1: THREE-PHASE POWER MEASUREMENT POWER QUALITY

Inductive and capacitive impedance are present in all power systems. We are
accustomed to thinking about these impedances as they perform at 60 Hz. However,
these impedances are subject to frequency variation.
XL = jwL and
XC = 1/jwC
At 60 Hz, w = 377; but at 300 Hz (5th harmonic) w = 1,885. As frequency changes
impedance changes and system impedance characteristics that are normal at 60 Hz
may behave entirely differently in the presence of higher order harmonic waveforms.
Traditionally, the most common harmonics have been the low order, odd frequencies,
such as the 3rd, 5th, 7th, and 9th. However newer, non-linear loads are introducing
significant quantities of higher order harmonics.
Since much voltage monitoring and almost all current monitoring is performed using
instrument transformers, the higher order harmonics are often not visible. Instrument
transformers are designed to pass 60 Hz quantities with high accuracy. These devices,
when designed for accuracy at low frequency, do not pass high frequencies with high
accuracy; at frequencies above about 1200 Hz they pass almost no information. So
when instrument transformers are used, they effectively filter out higher frequency
harmonic distortion making it impossible to see.
However, when monitors can be connected directly to the measured circuit (such as
direct connection to a 480 volt bus) the user may often see higher order harmonic
distortion. An important rule in any harmonics study is to evaluate the type of
equipment and connections before drawing a conclusion. Not being able to see
harmonic distortion is not the same as not having harmonic distortion.
It is common in advanced meters to perform a function commonly referred to as
waveform capture. Waveform capture is the ability of a meter to capture a present
picture of the voltage or current waveform for viewing and harmonic analysis.
Typically a waveform capture will be one or two cycles in duration and can be viewed
as the actual waveform, as a spectral view of the harmonic content, or a tabular view
showing the magnitude and phase shift of each harmonic value. Data collected with
waveform capture is typically not saved to memory. Waveform capture is a real-time
data collection event.
Waveform capture should not be confused with waveform recording that is used to
record multiple cycles of all voltage and current waveforms in response to a transient
condition.

1.8 Power Quality

Power quality can mean several different things. The terms “power quality” and
“power quality problem” have been applied to all types of conditions. A simple
definition of “power quality problem” is any voltage, current or frequency deviation
that results in mis-operation or failure of customer equipment or systems. The causes
of power quality problems vary widely and may originate in the customer equipment,
in an adjacent customer facility or with the utility.

EPM 2200 POWER METER – INSTRUCTION MANUAL 1–13

POWER QUALITY CHAPTER 1: THREE-PHASE POWER MEASUREMENT

In his book Power Quality Primer, Barry Kennedy provided information on different
types of power quality problems. Some of that information is summarized in Table 1.3.

Table 1.3: Typical Power Quality Problems and Sources

Cause Disturbance Type Source

Impulse transient Transient voltage disturbance, Lightning

sub-cycle duration Electrostatic discharge
Load switching
Capacitor switching

Oscillatory Transient voltage, sub-cycle Line/cable switching

transient with decay duration Capacitor switching
Load switching

Sag/swell RMS voltage, multiple cycle Remote system faults

duration

Interruptions RMS voltage, multiple System protection

seconds or longer duration Circuit breakers
Fuses
Maintenance

Under voltage/over RMS voltage, steady state, multiple Motor starting

voltage seconds or longer Load variations
duration Load dropping

Voltage flicker RMS voltage, steady state, Intermittent loads

repetitive condition Motor starting
Arc furnaces

Harmonic distortion Steady state current or voltage, Non-linear loads

long-term duration System resonance

It is often assumed that power quality problems originate with the utility. While it is
true that power quality problems can originate with the utility system, many problems
originate with customer equipment. Customer-caused problems may manifest
themselves inside the customer location or they may be transported by the utility
system to another adjacent customer. Often, equipment that is sensitive to power
quality problems may in fact also be the cause of the problem.
If a power quality problem is suspected, it is generally wise to consult a power quality
professional for assistance in defining the cause and possible solutions to the
problem.

1–14 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 2: Overview and

Specifications

Overview and Specifications

In European Union member state countries, this meter is NOT certified for revenue
Note

metering. See the Safety Precautions section for meter certification details.

2.1 Hardware Overview

The EPM 2200 monitor is a 0.5% class electrical panel meter. Using bright and large 0.56”
LED displays, it is designed to be used in electrical panels and switchgear. The meter has a
unique anti-dither algorithm to improve reading stability. The EPM 2200 meter uses high-
speed DSP technology with high-resolution A/D conversion to provide stable and reliable
measurements.
The EPM 2200 meter is a meter and transducer in one compact unit. Featuring an optional
RS485 port, it can be programmed using the faceplate of the meter or through software.
ANSI or DIN mounting may be used.
EPM 2200 meter features that are detailed in this manual are as follows:
• 0.5% Class Accuracy
• Multifunction Measurement including Voltage, Current, Power, Frequency, Energy, etc.
• Percentage of Load Bar for Analog Meter Perception
• Easy to Use Faceplate Programming
• One Communication Option:
• RS485 Modbus/KYZ output (Option S)
• BACnet MS/TP Serial Multifunction Meter with Modbus TCP/IP Internet (Option B)

EPM 2200 POWER METER – INSTRUCTION MANUAL 2–1

HARDWARE OVERVIEW CHAPTER 2: OVERVIEW AND SPECIFICATIONS

2.1.1 Voltage and Current Inputs

Universal Voltage Inputs

Voltage Inputs allow measurement to 416 Volts Line-to-Neutral and 721 Volts Line-to-Line.
One unit will perform to specification when directly connected to 69 Volt, 120 Volt, 230
Volt, 277 Volt, 277 Volt and 347 Volt power systems.

Current Inputs
The EPM 2200 meter Current Inputs use a unique dual input method:
Method 1: CT Pass Through
The CT passes directly through the meter without any physical termination on the meter.
This insures that the meter cannot be a point of failure on the CT circuit. This is preferable
for utility users when sharing relay class CTs.
Method 2: Current “Gills”
This unit additionally provides ultra-rugged Termination Pass Through Bars that allow CT
leads to be terminated on the meter. This, too, eliminates any possible point of failure at
the meter. This is a preferred technique for insuring that relay class CT integrity is not
compromised (the CT will not open in a fault condition).

2.1.2 Order Codes

The order codes for the EPM 2200 are indicated below.

Table 2–1: EPM 2200 Order Codes

PL2200 – * – * – *
Base Unit PL2200 | | | EPM 2200 Meter
Enclosure Option ENC120 | | NEMA1 Rated - Indoor, Single Meter Enclosure, 120V
ENC277 | | NEMA1 Rated - Indoor, Single Meter Enclosure, 277V
Software Option* A1 | Volts and Amps Meter
B1 | Volts, Amps, Power and Frequency Meter
C1 | Volts, Amps, Power, Frequency and Energy Counters Meter
BACnet Volts, Amps, Power, Frequency and Energy Counters
BN |
meter
Communications Option S RS485 Serial/KYZ Pulse
X None
B BACnet MS/TP Serial and Modbus TCP/IP Internet

* Software Options are only available with Communications Option S.

For example, to order an EPM 2200 to measure Volts, Amps, Power & Frequency, with
Modbus/KYZ output communications, use PL2200-XXXXXX-B1-S.
Accessories available for the EPM 2200 are indicated below.

Table 2–2: EPM 2200 Accessory Order Codes

PL2200 – * – *
DIN Bracket PL2200 – ACC – DIN EPM 2200 Meter DIN Mounting Bracket

2–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 2: OVERVIEW AND SPECIFICATIONS HARDWARE OVERVIEW

2.1.3 Measured Values

The following table lists the measured values available in real time, average, maximum,
and minimum.

Table 2–3: EPM 2200 Measured Values

Measured Values Real Time Average Maximum Minimum

Voltage L-N X X X

Voltage L-L X X X

Current per phase X X X X

Current Neutral X

Watts X X X X

VARs X X X X

VA X X X X

Power Factor (PF) X X X X

Positive watt-hours X

Negative watt-hours X

Net watt-hours X

Positive VAR-hours X

Negative VAR-hours X

Net VAR-hours X

VA-hours X

Frequency X X X

Voltage angles X

Current angles X

% of load bar X

2.1.4 Utility Peak Demand

The EPM 2200 provides user-configured Block (fixed) window, or Rolling window demand.
This feature allows you to set up a customized demand profile. Block window demand is
demand used over a user-configured demand period (usually 5, 15, or 30 minutes). Rolling
window demand is a fixed window demand that moves for a user-specified subinterval
period. For example, a 15-minute demand using 3 subintervals and providing a new
demand reading every 5 minutes, based on the last 15 minutes.
Utility demand features can be used to calculate kW, kVAR, kVA and PF readings. All other
parameters offer maximum and minimum capability over the user-selectable averaging
period. Voltage provides an instantaneous maximum and minimum reading which
displays the highest surge and lowest sag seen by the meter.

EPM 2200 POWER METER – INSTRUCTION MANUAL 2–3

SPECIFICATIONS CHAPTER 2: OVERVIEW AND SPECIFICATIONS

2.2 Specifications
POWER SUPPLY
Range:.................................................Universal, (90 to 265) VAC @50/60Hz
Power consumption: ....................5 VA, 3.5 W
VOLTAGE INPUTS (MEASUREMENT CATEGORY III)
Range:.................................................Universal, Auto-ranging up to 416 V AC L-N, 721 V AC L-L
Supported hookups:.....................3-element Wye, 2.5-element Wye,
2-element Delta, 4-wire Delta
Input impedance: ..........................1 MOhm/phase
Burden: ...............................................0.0144 VA/phase at 120 Volts
Pickup voltage:................................10 V AC
Connection: ......................................Screw terminal
Maximum input wire gauge: ...AWG #12 / 2.5 mm2
Fault withstand:..............................Meets IEEE C37.90.1
Reading: .............................................Programmable full-scale to any PT ratio
CURRENT INPUTS
Class 10:.............................................5 A nominal, 10 A maximum
Burden: ...............................................0.005 VA per phase maximum at 11 A
Pickup current:................................0.1% of nominal
Connections: ....................................O or U lug;
Pass-through wire, 0.177" / 4.5 mm maximum diameter
Quick connect, 0.25" male tab
Fault Withstand (at 23°C):..........100 A / 10 seconds, 300 A / 3 seconds, 500 A / 1 second
Reading: .............................................Programmable full-scale to any CT ratio
ISOLATION
All Inputs and Outputs are galvanically isolated to 2500 V AC
ENVIRONMENTAL
Storage:..............................................–20 to 70°C
Operating: .........................................-20 to 70°C
Humidity: ...........................................up to 95% RH, non-condensing
Faceplate rating:............................NEMA 12 (water resistant), mounting gasket included
METER ENCLOSURE ENVIRONMENTAL
Storage:..............................................–20 to 70°C
Operating: .........................................-10 to 50°C
Humidity: ...........................................up to 95% RH, non-condensing
Faceplate rating:............................NEMA 1 (Indoor Use)
Pollution degree .............................II
Overvoltage Category.................III (this product is designed for indoor use only)
MEASUREMENT METHODS
Voltage and current: ....................True RMS
Power: .................................................Sampling at 400+ samples/cycle on all channels measured; readings
simultaneously
A/D conversion: ..............................6 simultaneous 24-bit analog-to-digital converters
UPDATE RATE
All parameters: ...............................Up to 1 second
COMMUNICATIONS FORMAT
Types: ..................................................RS485 port through back plate plus KYZ Pulse (Com Option S)
RS485 serial port and RJ45 Ethernet port through backplate (Com
Option B)

2–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 2: OVERVIEW AND SPECIFICATIONS SPECIFICATIONS

COMMUNICATIONS PORTS
Protocols: .......................................... Modbus RTU, Modbus ASCII (Com Option S)
Modbus TCP/IP, BACnet MS/TP Serial (Com Option B)
Baud rate:......................................... 9600 to 57600 bps
Port address: ................................... 001 to 247
Data format:.................................... 8 bits, no parity
MECHANICAL PARAMETERS
Dimensions: ..................................... 4.25" × 4.85" × 4.85" (L × W × H)
105.4 mm × 123.2 mm × 123.2 mm (L × W × H)
Mounting:.......................................... mounts in 92 mm square DIN or ANSI C39.1, 4-inch round cut-out
Weight:............................................... 2 pounds / 0.907 kg
METER ENCLOSURE MECHANICAL PARAMETERS
Dimensions: ..................................... 8.08" × 11.06" × 13.50" (L × W × H)
205.23 mm × 280.92 mm × 342.9 mm (L × W × H)
Weight:............................................... 25 pounds / 11.4 kg
KYZ/RS485 PORT SPECIFICATIONS
RS485 Transceiver; meets or exceeds EIA/TIA-485 Standard:
Type: ................................................... Two-wire, half duplex
Min. Input Impedance: ............... 96kΩ
Max. Output Current: .................. ±60mA
WH PULSE
KYZ output contacts (and infrared LED light pulses through face plate):
Pulse Width: .................................... 40ms
Full Scale Frequency: ................. 6Hz
Contact type: ................................. Solid State – SPDT (NO – C – NC)
Relay type: ....................................... Solid state
Peak switching voltage: ............ DC ±350V
Continuous load current: ......... 120mA
Peak load current: ....................... 350mA for 10ms
On resistance, max.: ................... 35Ω
Leakage current: .......................... 1μA@350V
Isolation: ........................................... AC 3750V
Reset State: ..................................... (NC - C) Closed; (NO - C) Open
Infrared LED:
Peak Spectral Wavelength: ..... 940nm
Reset State: ..................................... Off

Figure 2-1: Internal Schematic (De-energized State)

EPM 2200 POWER METER – INSTRUCTION MANUAL 2–5

SPECIFICATIONS CHAPTER 2: OVERVIEW AND SPECIFICATIONS

Figure 2-2: Output Timing

2–6 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 2: OVERVIEW AND SPECIFICATIONS COMPLIANCE

2.3 Compliance

Test Reference Standard

IEC62053-22 (0.5% Accuracy)

ANSI C12.20 (0.5% Accuracy)

CE Compliant

Surge Withstand ANSI (IEEE) C37.90.1

Burst ANSI C62.41

Electrostatic Discharge IEC61000-4-2

RF Immunity IEC61000-4-3

Fast Transient IEC61000-4-4

Surge Immunity IEC61000-4-5

Conducted Disturbance Immunity IEC61000-4-6

Magnetic Field Immunity IEC61000-4-8

Voltage Dips and Sags Immunity IEC61000-4-11

Immunity for Industrial Environments EN61000-6-2

Emission Standards for Industrial EN61000-6-4

Environments

EMC Requirements EN61326-1

APPROVALS

Applicable Council Directive According to:

UL61010-1
North America UL Recognized C22.2. No 61010-1 (PICQ7)
File e200431

ISO Manufactured under a registered ISO9001

quality program

EPM 2200 POWER METER – INSTRUCTION MANUAL 2–7

ACCURACY CHAPTER 2: OVERVIEW AND SPECIFICATIONS

2.4 Accuracy
For 23 °C, 3 Phase balanced Wye or Delta load.

Parameter Accuracy Accuracy Input Range

Voltage L-N [V] 0.2% of reading2 (69 to 480)V
Voltage L-L [V] 0.4% of reading (120 to 600)V
Current Phase [A] 0.2% of reading1 (0.15 to 5)A
Current Neutral (calculated) 2% of Full Scale1 (0.15 to 5)A @ (45 to 65)Hz
[A]
Active Power Total [W] 0.5% of reading1,2 (0.15 to 5)A @ (69 to 480)V @ +/- (0.5 to 1) lag/lead PF
Active Energy Total [Wh] 0.5% of reading1,2 (0.15 to 5)A @ (69 to 480)V @ +/- (0.5 to 1) lag/lead PF
1,2
Reactive Power Total [VAR] 1.0% of reading (0.15 to 5)A @ (69 to 480)V @ +/- (0 to 0.8) lag/lead PF
Reactive Energy Total [VARh] 1.0% of reading1,2 (0.15 to 5)A @ (69 to 480)V @ +/- (0 to 0.8) lag/lead PF
Apparent Power Total [VA] 1.0% of reading1,2 (0.15 to 5)A @ (69 to 480)V @ +/- (0.5 to 1) lag/lead PF
1,2
Apparent Energy Total [VAh] 1.0% of reading (0.15 to 5)A @ (69 to 480)V @ +/- (0.5 to 1) lag/lead PF
Power Factor 1.0% of reading1,2 (0.15 to 5)A @ (69 to 480)V @ +/- (0.5 to 1) lag/lead PF
Frequency +/- 0.01Hz (45 to 65)Hz
Load Bar +/- 1 segment1 (0.005 to 6)A
1 For 2.5 element programmed units, degrade accuracy by an additional 0.5% of reading.

2 For unbalanced voltage inputs where at least one crosses the 150V auto-scale threshold

(for example, 120V/120V/208V system), degrade accuracy by additional 0.4%.

EPM 2200 accuracy meets the IEC62053-22 Accuracy Standards for 0.5% Class Meters.
This standard is shown in the table below.

Value of Current Power Factor Percentage Error Limits for

Meters of Class 0.5 S
0.01 In ≤ I < 0. 05 In 1 ±1.0
0.05 In ≤ I ≤ Imax 1 ±0.5
0.02 In ≤ I < 0.1 In 0.5 inductive ±1.0
0.8 capacitive ±1.0
0.1 In ≤ I ≤ Imax 0.5 inductive ±0.6
0.8 capacitive ±0.6
When specially requested by the 0.25 inductive ±1.0
user, from: 0.8 capacitive ±1.0
0.1 In ≤ I ≤ Imax

In the table above:

Note

NOTE
In = Nominal (5A)
Imax = Full Scale

2–8 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 3: Mechanical Installation

Mechanical Installation

3.1 Introduction
The EPM 2200 meter can be installed using a standard ANSI C39.1 (4" Round) or an IEC
92mm DIN (Square) form. In new installations, simply use existing DIN or ANSI punches. For
existing panels, pull out old analog meters and replace with the EPM 2200 meter. The
various models use the same installation. See Chapter 4 for wiring diagrams.

POTENTIAL ELECTRICAL EXPOSURE - The EPM 2200 must be installed in an electrical

enclosure where any access to live electrical wiring is restricted only to authorized
service personnel.

EPM 2200 POWER METER – INSTRUCTION MANUAL 3–1

ANSI INSTALLATION STEPS CHAPTER 3: MECHANICAL INSTALLATION

ANSI Mounting
Rods (screw-in)

DIN
Mounting
Brackets

Figure 3-1: EPM 2200 Mounting Information

Recommended Tools for EPM 2200 Meter Installation:
• #2 Phillips screwdriver, small wrench and wire cutters.
• Mount the meter in a dry location free from dirt and corrosive substances. The meter
is designed to withstand harsh environmental conditions. (See Environmental
Specifications in 2.2 Specifications on page 2–4.)

3.2 ANSI Installation Steps

1. Insert 4 threaded rods by hand into the back of meter. Twist until secure.
2. Slide ANSI 12 Mounting Gasket onto back of meter with rods in place.
3. Slide meter into panel.

3–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 3: MECHANICAL INSTALLATION DIN INSTALLATION STEPS

4. Secure from back of panel with lock washer and nut on each threaded rod.
Use a small wrench to tighten. Do not overtighten. The maximum installation
torque is 0.4 Newton-Meter.

NEMA12 mounting
gasket

threaded rods

lock washer
and nut

Figure 3-2: ANSI Mounting Procedure

3.3 DIN Installation Steps

1. Slide meter with NEMA 12 Mounting Gasket into panel. (Remove ANSI Studs, if
in place.)
2. From back of panel, slide 2 DIN Mounting Brackets into grooves in top and
bottom of meter housing. Snap into place.
3. Secure meter to panel with lock washer and a #8 screw through each of the 2
mounting brackets. Tighten with a #2 Phillips screwdriver. Do not overtighten.
The maximum installation torque is 0.4 Newton-Meter.

EPM 2200 POWER METER – INSTRUCTION MANUAL 3–3

DIN INSTALLATION STEPS CHAPTER 3: MECHANICAL INSTALLATION

DIN mounting
bracket

top-mounting
bracket groove

bottom mounting
bracket groove

#8 screw

EPM 2200 meter

with NEMA 12
mounting gasket

Remove (unscrew)
ANSI studs for DIN
Installation

Figure 3-3: DIN Mounting Procedure

3–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 4: Electrical Installation

Electrical Installation

4.1 Considerations When Installing Meters

POTENTIAL ELECTRICAL EXPOSURE - The EPM 2200/6010T must be installed in an
electrical enclosure where any access to live electrical wiring is restricted only to
authorized service personnel.
• Installation of the EPM 2200 Meter must be performed by only qualified personnel
who follow standard safety precautions during all procedures. Those personnel should
have appropriate training and experience with high voltage devices. Appropriate
safety gloves, safety glasses and protective clothing is recommended.
• During normal operation of the EPM 2200 Meter, dangerous voltages flow through
many parts of the meter, including: Terminals and any connected CTs (Current
Transformers) and PTs (Potential Transformers), all I/O Modules (Inputs and Outputs)
and their circuits. All Primary and Secondary circuits can, at times, produce lethal
voltages and currents. Avoid contact with any current-carrying surfaces.
• Do not use the meter or any I/O Output Device for primary protection or in an
energy-limiting capacity. The meter can only be used as secondary protection.
• Do not use the meter for applications where failure of the meter may cause harm or
death. Do not use the meter for any application where there may be a risk of fire.
• All meter terminals should be inaccessible after installation.
• Do not apply more than the maximum voltage the meter or any attached device can
withstand. Refer to meter and/or device labels and to the Specifications for all devices
before applying voltages. Do not HIPOT/Dielectric test any Outputs, Inputs or
Communications terminals.

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–1

CONSIDERATIONS WHEN INSTALLING METERS CHAPTER 4: ELECTRICAL INSTALLATION

• GE requires the use of Fuses for voltage leads and power supply and Shorting Blocks
to prevent hazardous voltage conditions or damage to CTs, if the meter needs to be
removed from service. CT grounding is optional, but recommended.

The current inputs are only to be connected to external current transformers provided
Note

by the installer. The CT's shall be Listed or Approved and rated for the current of the
meter used.

If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

There is no required preventive maintenance or inspection necessary for safety.

Note

However, any repair or maintenance should be performed by the factory.

DISCONNECT DEVICE: A switch or circuit-breaker shall be included in the end-use

equipment or building installation. The switch shall be in close proximity to the
equipment and within easy reach of the operator. The switch shall be marked as the
disconnecting device for the equipment.

4.1.1 CT Leads Terminated to Meter

The EPM 2200 is designed to have Current Inputs wired in one of three ways. Figure 4-1: CT
leads terminated to meter, #8 screw for lug connection below, shows the most typical
connection where CT Leads are terminated to the meter at the Current Gills.
This connection uses Nickel-Plated Brass Studs (Current Gills) with screws at each end. This
connection allows the CT wires to be terminated using either an “O” or a “U” lug. Tighten
the screws with a #2 Phillips screwdriver. The maximum installation torque is 1 Newton-
Meter.
Other current connections are shown in Figures 4-2 and 4-3. A Voltage and RS-485
Connection is shown in Figure 4-4: Voltage Connection on page 4–6.

4–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION CONSIDERATIONS WHEN INSTALLING METERS

Current gills
(nickel-plated
brass stud)

Figure 4-1: CT leads terminated to meter, #8 screw for lug connection

Wiring diagrams are detailed in the diagrams shown below in this chapter.
Communications connections are detailed in Chapter 5.

4.1.2 CT Leads Pass-Through (No Meter Termination)

The second method allows the CT wires to pass through the CT Inputs without terminating
at the meter. In this case, remove the current gills and place the CT wire directly through
the CT opening. The opening will accommodate up to 0.177" / 4.5 mm maximum diameter
CT wire.

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–3

CONSIDERATIONS WHEN INSTALLING METERS CHAPTER 4: ELECTRICAL INSTALLATION

CT wire passing
through the meter

Current gills
removed

Figure 4-2: Pass-Through Wire Electrical Connection

4–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION CONSIDERATIONS WHEN INSTALLING METERS

4.1.3 Quick Connect Crimp CT Terminations

For quick termination or for portable applications, a quick connect crimp CT connection
can also be used.

Crimp CT
terminations

Figure 4-3: Quick Connect Electrical Connection

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–5

CONSIDERATIONS WHEN INSTALLING METERS CHAPTER 4: ELECTRICAL INSTALLATION

4.1.4 Voltage and Power Supply Connections

Voltage Inputs are connected to the back of the unit via a optional wire connectors. The
connectors accommodate up to AWG#12 / 2.5 mm wire.

Power supply
inputs RS485 outputs
(do not place voltage
on these terminals!)

Voltage
inputs

Figure 4-4: Voltage Connection

4.1.5 Ground Connections

The EPM 2200 ground terminals ( ) should be connected directly to the installation's
protective earth ground. Use 2.5 mm wire for this connection.

4.1.6 Voltage Fuses

GE requires the use of fuses on each of the sense Voltages and on the control power.
• Use a 0.1 Amp fuse on each voltage input.
• Use a 3.0 Amp fuse on the Power Supply.

4–6 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

4.2 Electrical Connection Diagrams

4.2.1 Description
Choose the diagram that best suits your application and maintains the CT polarity.
(1) Wye, 4-Wire with no PTs and 3 CTs, no PTs, 3 Element on page 4–8.
(1a) Dual Phase Hookup on page 4–9.
(1b) Single Phase Hookup on page 4–10.
(2) Wye, 4-Wire with no PTs and 3 CTs, 2.5 Element on page 4–11.
(3) Wye, 4-Wire with 3 PTs and 3 CTs, 3 Element on page 4–12.
(4) Wye, 4-Wire with 2 PTs and 3 CTs, 2.5 Element on page 4–13.
(5) Delta, 3-Wire with no PTs, 2 CTs on page 4–14.
(6) Delta, 3-Wire with 2 PTs, 2 CTs on page 4–15.
(7) Delta, 3-Wire with 2 PTs, 3 CTs on page 4–16.
(8) Current-Only Measurement (Three-Phase) on page 4–17.
(9) Current-Only Measurement (Dual-Phase) on page 4–18.
(10) Current-Only Measurement (Single-Phase) on page 4–19.

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–7

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

4.2.2 (1) Wye, 4-Wire with no PTs and 3 CTs, no PTs, 3 Element
For this wiring type, select 3 EL WYE (3-element Wye) in the meter programming setup.

LINE

N A B C

Power
CT
Supply
Shorting
Connection
Block GND
Earth Ground FUSE
L(+)
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
3 x 0.1A

N A B C
LOAD

Figure 4-5: 4-Wire Wye with no PTs and 3 CTs, 3 Element

4–8 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

LINE
N A B C

CT
Shorting Power
Block Supply
Connection
Earth Ground GND

L(+) FUSE
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc
x

FUSES
2 x 0.1A

N A B C
LOAD

Figure 4-6: (1a) Dual Phase Hookup

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–9

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

LINE
N A B C

CT
Shorting
Block

Power
Earth Ground Supply
Connection
GND

L(+) FUSE
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
x
Vc
x

FUSE
0.1A

N A B C
LOAD

Figure 4-7: (1b) Single Phase Hookup

4–10 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

4.2.3 (2) Wye, 4-Wire with no PTs and 3 CTs, 2.5 Element
For this wiring type, select 2.5EL WYE (2.5-element Wye) in the meter programming setup.

LINE

N A B C

Power
CT
Supply
Shorting
Connection
Block GND
Earth Ground FUSE
L(+)
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
2 x 0.1A

N A B C
LOAD

Figure 4-8: 4-Wire Wye with no PTs and 3 CTs, 2.5 Element

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–11

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

4.2.4 (3) Wye, 4-Wire with 3 PTs and 3 CTs, 3 Element

For this wiring type, select 3 EL WYE (3-element Wye) in the meter programming setup.

LINE

N A B C

Power
CT
Supply
Shorting
Connection
Block GND
Earth Ground FUSE
L(+)
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
3 x 0.1A

Earth Ground
N A B C
LOAD

Figure 4-9: 4-Wire Wye with 3 PTs and 3 CTs, 3 Element

4–12 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

4.2.5 (4) Wye, 4-Wire with 2 PTs and 3 CTs, 2.5 Element
For this wiring type, select 2.5EL WYE (2.5-element Wye) in the meter programming setup.

LINE

N A B C

Power
CT
Supply
Shorting
Connection
Block GND
Earth Ground FUSE
L(+)
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
2 x 0.1A

Earth Ground
N A B C
LOAD

Figure 4-10: 4-Wire Wye with 2 PTs and 3 CTs, 2.5 Element

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–13

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

4.2.6 (5) Delta, 3-Wire with no PTs, 2 CTs

For this wiring type, select 2 Ct dEL (2 CT Delta) in the meter programming setup.

LINE

A B C

CT
Shorting
Block

Earth Ground Power

Supply
Connection
GND

L(+) FUSE
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
3 x 0.1A

A B C
LOAD

Figure 4-11: 3-Wire Delta with no PTs and 2 CTs

4–14 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

4.2.7 (6) Delta, 3-Wire with 2 PTs, 2 CTs

For this wiring type, select 2 Ct dEL (2 CT Delta) in the meter programming setup.

LINE

A B C

CT
Shorting
Block

Earth Ground Power

Supply
Connection
GND

L(+) FUSE
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
2 x 0.1A

Earth Ground

A B C
LOAD

Figure 4-12: 3-Wire Delta with 2 PTs and 2 CTs

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–15

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

4.2.8 (7) Delta, 3-Wire with 2 PTs, 3 CTs

For this wiring type, select 2 Ct dEL (2 CT Delta) in the meter programming setup.

LINE

A B C

CT Power
Shorting Supply
Block Connection
GND
Earth Ground FUSE
L(+)
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va
Vb
Vc

FUSES
2 x 0.1A

Earth Ground

A B C
LOAD

Figure 4-13: 3-Wire Delta with 2 PTs and 3 CTs

4–16 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

4.2.9 (8) Current-Only Measurement (Three-Phase)

For this wiring type, select 3 EL WYE (3 Element Wye) in the meter programming setup.

LINE

A B C

Power
CT
Supply
Shorting
Connection
Block GND
Earth Ground FUSE
L(+)
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va 20VAC
FUSE Minimum
Vb
Vc 0.1A

A B C
LOAD

Figure 4-14: Current-Only Measurement (Three-Phase)

Even if the meter is used only for current measurement, the unit requires a AN volts
Note

reference. Please ensure that the voltage input is attached to the meter. AC control power
can be used to provide the reference signal.

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–17

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

4.2.10 (9) Current-Only Measurement (Dual-Phase)

For this wiring type, select 3 EL WYE (3 Element Wye) in the meter programming setup.

LINE

A B

CT
Shorting
Block

Earth Ground Power

Supply
Connection
GND

L(+) FUSE
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va 20VAC
FUSE Minimum
Vb
Vc 0.1A

A B
LOAD

Figure 4-15: Current-Only Measurement (Dual-Phase)

Even if the meter is used only for current measurement, the unit requires a AN volts
Note

reference. Please ensure that the voltage input is attached to the meter. AC control power
can be used to provide the reference signal.

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CHAPTER 4: ELECTRICAL INSTALLATION ELECTRICAL CONNECTION DIAGRAMS

4.2.11 (10) Current-Only Measurement (Single-Phase)

For this wiring type, select 3 EL WYE (3 Element Wye) in the meter programming setup.

LINE

N A

CT
Shorting
Block

Earth Ground

Power
Supply
Connection
GND

L(+) FUSE
HI HI HI L(+)
N(-) 3A
N(-)
lc lb la Vref

LO LO LO Va 20VAC
FUSE Minimum
Vb
Vc 0.1A

N A
LOAD

Figure 4-16: Current-Only Measurement (Single-Phase)

Even if the meter is used only for current measurement, the unit requires a AN volts
Note

reference. Please ensure that the voltage input is attached to the meter. AC control power
can be used to provide the reference signal.

EPM 2200 POWER METER – INSTRUCTION MANUAL 4–19

ELECTRICAL CONNECTION DIAGRAMS CHAPTER 4: ELECTRICAL INSTALLATION

4–20 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 5: Com Option S: Modbus/

KYZ output

Com Option S: Modbus/KYZ output

The Communication Options available for the EPM 2200 are connected and used in
different ways.
• Com Option S: Modbus/KYZ output is explained here in Chapter 5.
• Com Option B: BACnet MS/TP with Modbus TCP/IP Internet is explained in Chapter 7 on
page 7-1.

5.1 Connecting to the RS485/KYZ Output Port

The EPM 2200 Meter with Communications Option S provides a combination RS485 and a
KYZ Pulse Output for pulsing energy values. The RS485 / KYZ Combo is located on the
terminal section of the meter, and provides RS485 communication speaking Modbus ASCII
and Modbus RTU protocols.
The EPM 2200 meter’s RS485 port can be programmed with the buttons on the face of the
meter or by using GE Communicator software.
The standard RS485 Port Settings are as follows:
• Address: 001 to 247
• Baud Rate: 9600, 19200, 38400 or 57600
• Protocol: Modbus RTU, Modbus ASCII
Details of changing the RS485 port settings are given in Chapter 6, using the faceplate: 6.1
Programming Using the Faceplate on page 6–1, and using the GE Communicator software:
6.4.2 How to Connect Using GE Communicator Software on page 6–17.

EPM 2200 POWER METER – INSTRUCTION MANUAL 5–1

CONNECTING TO THE RS485/KYZ OUTPUT PORT CHAPTER 5: COM OPTION S: MODBUS/KYZ OUTPUT

Figure 5-1: 485P Option with RS-485 Communication Installation

RS485 allows you to connect one or multiple EPM 2200 meters to a PC or other device, at
either a local or remote site. All RS485 connections are viable for up to 4000 feet (1219.20
meters).

Figure 5-2: EPM 2200 Connected to PC via RS485

As shown in Figure 5-2, to connect a EPM 2200 to a PC, you need to use an RS485 to RS232
converter.
Figure 5-3 below, shows the detail of a 2-wire RS485 connection.

5–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 5: COM OPTION S: MODBUS/KYZ OUTPUT CONNECTING TO THE RS485/KYZ OUTPUT PORT

EPM2200 Meter
RS485 Connection
From other RS-485 device:
- -
- Connect (-) to (-)
- Connect (+) to (+) + +
- Connect Shield (SH)
to Shield (SH) SH SH
Twisted Pair, Shielded Cable
Figure 5-3: 2-wire RS485 Connection

For All RS485 Connections:

Note

• Use a shielded twisted pair cable 22 AWG (0.33 mm2) or larger, grounding the shield at
NOTE
one end only.
• Establish point-to-point configurations for each device on a RS485 bus: connect ’+’
terminals to ’+’ terminals; connect ’-’ terminals to ’-’ terminals.
• You may connect up to 31 meters on a single bus using RS485. Before assembling the
bus, each meter must be assigned a unique address: refer to the GE Communicator
Instruction Manual.
• Protect cables from sources of electrical noise.
• Avoid both “Star” and “Tee” connections (see Figure 5.5).
• No more than two cables should be connected at any one point on an RS485 network,
whether the connections are for devices, converters, or terminal strips.
• Include all segments when calculating the total cable length of a network. If you are
not using an RS485 repeater, the maximum length for cable connecting all devices is
4000 feet (1219.20 meters).
• Connect shield to RS485 Master and individual devices as shown in Figure 5.4. You
may also connect the shield to earth-ground at one point.
• Termination Resistors (RT) may be needed on both ends of longer length transmission
lines. However, since the meter has some level of termination internally, Termination
Resistors may not be needed. When they are used, the value of the Termination
Resistors is determined by the electrical parameters of the cable.
Figure 5-4 shows a representation of an RS485 Daisy Chain connection.

Figure 5-4: RS485 Daisy Chain Connection

EPM 2200 POWER METER – INSTRUCTION MANUAL 5–3

CONNECTING TO THE RS485/KYZ OUTPUT PORT CHAPTER 5: COM OPTION S: MODBUS/KYZ OUTPUT

Figure 5-5: Incorrect “T” and “Star” Topologies

5–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 6: Using the Meter

Using the Meter

You can use the Elements and Buttons on the EPM 2200 meter face to view meter
readings, reset and/or configure the meter, and perform related functions. You can also
use the GE Communicator software to configure the meter through communication.
The following sections explain meter programming, first by using the faceplate and then
with GE Communicator software.

6.1 Programming Using the Faceplate

The EPM 2200 meter can be configured and a variety of functions can be accomplished
simply by using the Elements and the Buttons on the meter face. Complete Navigation
Maps can be found in Appendix A of this manual.

EPM 2200 POWER METER – INSTRUCTION MANUAL 6–1

PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

6.1.1 Meter Face Elements

Reading Parameter
type indicator designator

% of Load Bar
Scale Selector

Figure 6-1: Faceplate of EPM 2200 Meter with Elements

The meter face features the following elements:
• Reading Type Indicator:
Indicates Type of Reading
• % of Load Bar:
Graphic Display of Amps as % of the Load
• Parameter Designator:
Indicates Reading Displayed
• Scaling Factor:
Kilo or Mega multiplier of Displayed Readings

6.1.2 Meter Face Buttons

MENU ENTER
button button

RIGHT
DOWN
button
button

Figure 6-2: EPM 2200 Faceplate Buttons

6–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 6: USING THE METER PROGRAMMING USING THE FACEPLATE

Using Menu, Enter, Down and Right Buttons, perform the following functions:
• View Meter Information
• Enter Display Modes
• Configure Parameters (Password Protected)
• Perform Resets
• Perform LED Checks
• Change Settings
• View Parameter Values
• Scroll Parameter Values
The EPM 2200 has three MODES:
• Operating Mode (Default)
• Reset Mode
• Configuration Mode.
The MENU, ENTER, DOWN and RIGHT buttons navigate through the modes and navigate
through all the screens in each mode.
In this chapter, a typical set up will be demonstrated. Other settings are possible. The
complete Navigation Map for the Display Modes is in Appendix A of this manual. The meter
can also be configured with software (see GE Communicator Instruction Manual).

6.1.3 Start Up
Upon Power Up, the meter will display a sequence of screens. The sequence includes the
following screens:
• Lamp Test Screen where all LEDs are lighted
• Lamp Test Screen where all digits are lighted
• Firmware Screen showing build number
• Error Screen (if an error exists)
If auto-scrolling is enabled, the EPM 2200 will then automatically Auto-Scroll the
Parameter Designators on the right side of the front panel. Values are displayed for each
parameter.
The KILO or MEGA LED lights, showing the scale for the Wh, VARh and VAh readings.
An example of a Wh reading is shown here.

EPM 2200 POWER METER – INSTRUCTION MANUAL 6–3

PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

Figure 6-3: Typical Wh Reading

The EPM 2200 will continue to scroll through the Parameter Designators, providing
readings until one of the buttons on the front panel is pushed, causing the meter to enter
one of the other MODES.

6.1.4 Main Menu

Push the MENU button. The MAIN MENU screen appears.
• The Reset mode (rSt) appears in the A window. Use the Down button to scroll,
causing the Configuration (CFG), and Operating (OPr) modes to move to the A
window.
• The mode that is currently flashing in the A window is the “Active” mode, which
means it is the mode that can be configured.

Figure 6-4: Main Menu Screens

Press the ENTER button from the Main Menu to view the Parameters screen for the mode
that is currently active.

6.1.5 Reset Mode

1. Push ENTER while rSt is in the A Screen and the rSt ALL? no screen appears.

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CHAPTER 6: USING THE METER PROGRAMMING USING THE FACEPLATE

• If you push ENTER again, the Main Menu continues to scroll. (The DOWN button does
not change the screen.)
• If you push the RIGHT button, the rSt All? YES screen appears. Press Enter to perform
a reset.

CAUTION! All Max and Min values will be reset.

Note

If Password protection is enabled in the software for reset, you must enter the four
Note

digit password before you can reset the meter.

NOTE
2. Once you have performed a reset, the screen displays rSt ALL donE and then resumes
auto-scrolling parameters.

6.1.6 Enter Password (if enabled)

If PASSWORD is Enabled in the software (see 6.4.3 Device Profile Settings on page 6–20 to
Enable/Change Password), a screen appears requesting the Password. PASS appears in
the A Screen and 4 dashes in the B Screen. The LEFT digit is flashing.
1. Use the DOWN button to scroll from 0 to 9 for the flashing digit. When the correct
number appears for that digit, use the RIGHT button to move to the next digit.
Example: On the Password screens below:
• On the left screen, four dashes appear and the left digit is flashing.
• On the right screen, 2 digits have been entered and the third digit is flashing.

EPM 2200 POWER METER – INSTRUCTION MANUAL 6–5

PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

PASS or FAIL:
2. When all 4 digits have been entered, push ENTER.
If the correct Password has been entered, rSt ALL donE appears and the screen
returns to Auto-Scroll the Parameters. (In other Modes, the screen returns to the
screen to be changed. The left digit of the setting is flashing and the Program (PRG)
LED flashes on the left side of the meter face.)
.

If an incorrect Password has been entered, PASS ---- FAIL appears and the screen
returns to rSt ALL? YES.
.

6.1.7 Configuration Mode

Navigating the configuration mode menu.

1. Press the MENU Button from any of the auto-scrolling readings.
2. Press DOWN to display the Configuration Mode (CFG) string in the A screen.

6–6 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 6: USING THE METER PROGRAMMING USING THE FACEPLATE

3. Press ENTER to scroll through the configuration parameters, starting at the

SCrL Ct Pt screen.

4. Push the DOWN Button to scroll all the parameters: scroll, CT, PT, connection
(Cnct) and port.
The active parameter is always flashing and displayed in the A screen.

Programming the screen for configuration mode.

1. Press the DOWN or RIGHT button (for example, from the Ct-n message below)
to display the password screen, if enabled in the software.
2. Use the DOWN and RIGHT buttons to enter the correct password (refer to
Reset Mode on page 7–4 for steps on password entry).
3. Once the correct password is entered, push ENTER.
The Ct-n message will reappear, the PRG faceplate LED will flash, and the first
digit of the “B” screen will also flash.

4. Use the DOWN button to change the first digit.

5. Use the RIGHT button to select and change the successive digits.
6. When the new value is entered, push ENTER twice.
This will display the Stor ALL? no screen.

EPM 2200 POWER METER – INSTRUCTION MANUAL 6–7

PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

7. Use the RIGHT button to scroll to change the value from no to YES.

8. When the Stor ALL? YES message is displayed, press ENTER to change the
setting.
The Stor ALL donE message will appear and the meter will reset.

6.1.8 Configuring the Scroll Feature

When in Auto Scroll mode, the meter performs a scrolling display, showing each
parameter for 7 seconds, with a 1 second pause between parameters. The parameters
that the meter displays are determined by the following:
• They have been selected through software (refer to the GE Communicator Instruction
Manual).
• They are available through the appropriate software options (see 2.1.2 Order Codes on
page 2–2).
Use the following procedure to configure the scroll feature.
1. Press the ENTER button to display the SCrL no message.
2. Press the RIGHT button to change the display to SCrL YES as shown below.

6–8 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 6: USING THE METER PROGRAMMING USING THE FACEPLATE

Figure 6-5: Scroll Mode Configuration

3. Push ENTER to select YES or no.
The screen scrolls to the CT parameters.

6.1.9 Configuring the CT Setting

Use the following procedure to program the CT setting.
1. Push the DOWN Button to scroll through the configuration mode parameters.
Press ENTER when Ct is the active parameter (i.e. it is in the A screen and flashing).

This will display the and the Ct-n (CT numerator) screen.
2. Press ENTER again to change to display the Ct-d (CT denominator) screen.

The Ct-d value is preset to a 1 or 5 A at the factory and cannot be changed.

3. Press ENTER again to select the to Ct-S (CT scaling) value.

EPM 2200 POWER METER – INSTRUCTION MANUAL 6–9

PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

The Ct-S value can be “1”, “10”, or “100”. Refer to Programming the screen for configuration
mode. on page 6–7 for instructions on changing values.
Example settings for the Ct-S value are shown below:
200/5 A: set the Ct-n value for “200” and the Ct-S value for “1”
800/5 A: set the Ct-n value for “800” and the Ct-S value for “1”
2000/5 A: set the Ct-n value for “2000” and the Ct-S value for “1”.
10000/5 A: set the Ct-n value for “1000” and the Ct-S value for “10”.

The value for amps is a product of the Ct-n and the Ct-S values.
Note

NOTE
4. Press ENTER to scroll through the other CFG parameters.
Pressing DOWN or RIGHT displays the password screen (see Reset Mode on
page 7–4 for details).
5. Press MENU to return to the main configuration menu.

Ct-n and Ct-S are dictated by primary current.

Note

Ct-d is secondary current.

NOTE

6.1.10 Configuring the PT Setting

Use the following procedure to program the PT setting.
1. Push the DOWN Button to scroll through the configuration mode parameters.
2. Press ENTER when Pt is the "active" parameter (i.e. it is in the A screen and
flashing) as shown below.

This will display the Pt-n (PT numerator) screen.

3. Press ENTER again to change to display the Pt-d (PT denominator) screen.

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CHAPTER 6: USING THE METER PROGRAMMING USING THE FACEPLATE

4. Press ENTER again to select the to Pt-S (PT scaling) value.

The Pt-S value can be “1”, “10”, or “100”. Refer to Programming the Configuration Mode
Screens on page 7–7 for instructions on changing values.
Example settings for the Pt-n, Pt-d, and Pt-S values are shown below:

277/277 Volts: Pt-n value is 277, Pt-d value is 277, Pt-Multiplier is 1

14400/120 Volts: Pt-n value is 1440, Pt-d value is 120, Pt-S value is 10
138000/69 Volts: Pt-n value is 1380, Pt-d value is 69, Pt-S value is 100
345000/115 Volts: Pt-n value is 3450, Pt-d value is 115, Pt-S value is 100
345000/69 Volts: Pt-n value is 345, Pt-d value is 69, Pt-S value is 1000

5. Press ENTER to scroll through the other CFG parameters.

6. Press DOWN or RIGHT to display the password screen (see Reset Mode on
page 7–4 for details).
7. Press MENU to return to the Main Configuration Menu.

Pt-n and Pt-S are dictated by primary voltage.

Note

Pt-d is secondary voltage.

NOTE

6.1.11 Configuring the Connection (Cnct) Setting

Use the following procedure to program the connection (Cnct) setting.
1. Push the DOWN Button to scroll through the Configuration Mode parameters:
Scroll, CT, PT, Connection (Cnct), and Port. The "active" parameter is in the A
screen and is flashing

EPM 2200 POWER METER – INSTRUCTION MANUAL 6–11

PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

2. Press ENTER when Cnct is the "active" parameter (i.e. it is in the A screen and
flashing).
This will display the Cnct (Connection) screen. To change this setting, use the RIGHT button
to scroll through the three settings. Select the setting that is right for your meter.
The possible Connection configurations are
• 3-element Wye (3 EL WYE)
• 2.5-element Wye (2.5EL WYE)
• 2 CT Delta (2 Ct deL)
as shown below:

3-Element Wye 2.5-Element Wye 2 CT Delta

3. Press ENTER to scroll through the other CFG parameters.

4. Press DOWN or RIGHT to display the Password screen (see Reset Mode on
page 6–4 for details).
5. Press MENU to return to the main Configuration menu.

6.1.12 Configuring the Communication Port Settings

Use the following procedure to program the communication port (POrt) settings of the
RS485 port if you have an EPM 2200 meter with Com Option S: RS485/KYZ output.

If you have an EPM 2200 meter with Com Option B (BACnet), the RS485 port is used only for
Note

BACnet and is not programmed.

NOTE
1. Push the DOWN Button to scroll through the configuration mode parameters.
2. Press ENTER when POrt is the active parameter (i.e. it is in the A screen and
flashing) as shown below.

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CHAPTER 6: USING THE METER PROGRAMMING USING THE FACEPLATE

The following parameters can be configured through the POrt menu

• The meter Address (Adr, a 3-digit number).
• The Baud Rate (bAUd). Select from “9600”, “19.2”, “38.4”, and
“57.6” for 9600, 19200, 38400, and 57600 kbps, respectively.
• The Communications Protocol (Prot). Select “rtU” for Modbus
RTU, and “ASCI” for Modbus ASCII.
• The first POrt screen is Meter (Adr). The current address appears on the screen.
Select a three-digit number for the address.

Address 005
Refer to Programming the Configuration Mode Screens above for details on changing
values.
• The next POrt screen is the baud rate (bAUd). The current baud rate is displayed on
the “B” screen. Refer to Programming the Configuration Mode Screens above for
details on changing values. The possible baud rate screens are shown below.

• The final POrt screen is the Communications Protocol (Prot).

The current protocol is displayed on the “B” screen.

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PROGRAMMING USING THE FACEPLATE CHAPTER 6: USING THE METER

Refer to Programming the Configuration Mode Screens above for details on changing
values. The three protocol selections are shown below.
3. Press ENTER to scroll through the other CFG parameters.
4. Press DOWN or RIGHT to display the Password screen (see Reset Mode on
page 7–4 for details).
5. Press MENU to return to the main Configuration menu.

6.1.13 Operating Mode

Operating mode is the EPM 2200 meter’s default mode. If scrolling is enabled, the meter
automatically scrolls through these parameter screens after startup. The screen changes
every 7 seconds. Scrolling is suspended for 3 minutes after any button is pressed.
Push the DOWN button to scroll all the parameters in operating mode. The active
parameter has the indicator light next to it on the right face of the meter.
Push the RIGHT button to view additional displays for that parameter. A table of the
possible displays in the operating mode is below. Refer to Appendix A: EPM 2200
Navigation Maps on page A–1 for a detailed navigation map of the operating mode.

Table 6–1: Operating Mode Parameter Readings

Parameter designator
Available by Software Possible Readings
Option (see Order Code
table)

VOLTS L-N A1, B1, C1 VOLTS_LN VOLTS_LN_ MAX VOLTS_LN_ MIN

VOLTS L-L A1, B1, C1 VOLTS_LL VOLTS_LL_ MAX VOLTS_LL_ MIN

AMPS A1, B1, C1 AMPS AMPS_NEUTRAL AMPS_MAX AMPS_MIN

W/VAR/PF B1, C1 W_VAR_PF W_VAR_PF W_VAR_PF W_VAR_PF W_VAR_PF

_MAX_POS _MIN_POS _MAX_NEG _MIN_NEG

VA/Hz B1, C1 VA_FREQ VA_FREQ_ MAX VA_FREQ_ MIN

Wh C1 KWH_REC KWH_DEL KWH_NET KWH_TOT

VARh C1 KVARH_ POS KVARH_ NEG KVARH_ NET KVARH_TOT

VAh C1 KVAH

6–14 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 6: USING THE METER % OF LOAD BAR

Readings or groups of readings are skipped if not applicable to the meter type or hookup,
Note

or if explicitly disabled in the programmable settings.

NOTE

6.2 % of Load Bar

The 10-segment LED bargraph at the bottom of the EPM 2200 unit display provides a
graphic representation of Amps. The segments light according to the load in the %Load
Segment Table below.
When the Load is over 120% of Full Load, all segments flash “On” (1.5 secs) and “Off” (0.5
secs).

Table 6–2: % Load Segments

Segments Load ≤ % Full Load
None No Load
1 1%
1-2 15%
1-3 30%
1-4 45%
1-5 60%
1-6 72%
1-7 84%
1-8 96%
1-9 108%
1 - 10 120%
All Blink >120%

6.3 Watt-hour Accuracy Testing (Verification)

To be certified for revenue metering, power providers and utility companies have to verify
that the billing energy meter will perform to the stated accuracy. To confirm the meter's
performance and calibration, power providers use field test standards to ensure that the
unit's energy measurements are correct. Since the EPM 2200 is a traceable revenue meter,
it contains a utility grade test pulse that can be used to gate an accuracy standard. This is
an essential feature required of all billing grade meters.

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WATT-HOUR ACCURACY TESTING (VERIFICATION) CHAPTER 6: USING THE METER

Watt-Hour
Test Pulse

Figure 6-6: Watt-hour Test Pulse

Refer to the figure below for an example of how this test works.
Refer to Table 6-2 below for the Wh/Pulse Constant for Accuracy Testing.

Test Pulses Energy Pulses

Energy Standard

Comparator

Results

Figure 6-7: Using the Watt-Hour Test Pulse

6.3.1 Infrared & KYZ Pulse Constants for Accuracy Testing

Table 6–3: Infrared & KYZ Pulse Constants for Accuracy Testing

Voltage Level Class 10 Models

Below 150 V 0.2505759630

Above 150 V 1.0023038521

6–16 EPM 2200 POWER METER – INSTRUCTION MANUAL

CHAPTER 6: USING THE METER GE COMMUNICATOR PROGRAMMING OVERVIEW

• Minimum pulse width is 40 ms.

Note

• Refer to Specifications on page 2–4 for Wh Pulse specifications.

NOTE
• The EPM 2200 with Communications Option B: BACnet does not have a KYZ pulse
output.

6.4 GE Communicator Programming Overview

The EPM 2200 meter can be programmed either through the buttons on the faceplate or
through software. Software programming and communication utilize either the RS485
connection on the back of the meter (Com Option S) or the ethernet port (Com Option B).
Once a connection is established, GE Communicator software can be used both to
program the meter and to communicate with EPM 2200 slave devices.

6.4.1 Factory Initial Default Settings

You can connect to the EPM 2200 Com Option S in Default communication mode, using the
RS485 port. This feature is useful in debugging or if you do not know the meter's
programmed settings and want to find them.
When the EPM 2200 is powered up, you have up to 5 seconds to poll the Name Register as
shown in the example below: “How to Connect.” You will be connected to the meter with
the Factory Initial Default Settings. The meter continues to operate with these default
settings for 5 minutes. During this time, you can access the meter’s Device Profile to
ascertain/change meter information. After the 5 minutes have passed, the meter reverts
to the programmed Device Profile settings.
Factory Initial Default Settings:
• Baud Rate: 9600
• Address: 001
• Protocol: Modbus RTU

Connecting in Default communication mode does not apply to the EPM 2200 meter with
Note

Com Option B.
NOTE

6.4.2 How to Connect Using GE Communicator Software

1. Open the GE Communicator software.
2. Click the Connect button on the tool bar.

Click the Connect Icon

Figure 6-8: Connect Button

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GE COMMUNICATOR PROGRAMMING OVERVIEW CHAPTER 6: USING THE METER

3. The Connect screen opens.

• For Communication Option S (connecting through the RS485 port) make sure your
settings are the same as shown here. Use the pull-down windows to make
changes, if necessary.

Figure 6-9: Serial Port settings

• For Communication Option B (connecting through the Ethernet port) your settings
screen is shown below. Enter the address of the Ethernet card.

Figure 6-10: Network Port settings

(See 7.3 Configuring Com Option B: BACnet MS/TP with Modbus TCP/IP on page 7–3
for Ethernet configuration details.)
4. Click the Connect button. If you have a problem connecting, you may have to
disconnect power to the meter, then reconnect power and click the Connect button,
again.

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CHAPTER 6: USING THE METER GE COMMUNICATOR PROGRAMMING OVERVIEW

5. You will see the Device Status screen, confirming connection to your meter. Click OK.

Figure 6-11: Device Status screen

6. Click the Profile icon in the Icon Bar.

Click the Profile Icon

7. You will see the Device Profile screen. The tabs at the top of the screen allow you to
navigate between setting screens (see below).

8. Click the Communication tab. The Communication Settings appear.

Use drop-down menus to change settings of the RS485 port (Com 2) if you have an
EPM 2200 meter with Com Option S: RS485/KYZ output.

• COM1 is not used by the EPM 2200 meter with Com Option S.
Note

• If you have an EPM 2200 meter with Com Option B (BACnet), the RS485 port is used
NOTE
only for BACnet and is not programmed.
Valid Communication Settings
• COM2 (RS485)
• (1-247)
• Protocol (Modbus RTU, ASCII)

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GE COMMUNICATOR PROGRAMMING OVERVIEW CHAPTER 6: USING THE METER

• Baud Rate (9600 to 57600)

• Response Delay (0-750 msec)
9. When changes are complete, click Update to send a new profile to the meter.
10. Click Cancel to exit the Profile or click other tabs to update other aspects of the Profile
(see the next section).

6.4.3 Device Profile Settings

Only the basic Device Profile settings are explained in this manual. Refer to the GE
Communicator Instruction Manual for details of the meter’s Device Profile.
The Device Profile settings are described in the following sections. After programming the
Device Profile, click the options at the bottom of the screen to continue:
• Update to send the new Profile to the connected meter.

If the Update fails, the software asks if you want to try to Update again.
Note

NOTE

• Cancel to exit the EPM 2200 Device Profile screen.

• Load to load new Device Profile settings from a file.
• Save to save the Device Profile settings in a file.
• Report to view or print a summary of the Device Profile settings.
• Help to view the full GE Communicator Instruction Manual

If you click Cancel before Save or Update, you will lose any changes you have made to the
Note

Device Profile.
NOTE

SCALING (CT, PT Ratios and System Wiring)

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CHAPTER 6: USING THE METER GE COMMUNICATOR PROGRAMMING OVERVIEW

• CT Numerator (Primary): 1-9999

• CT Denominator (Secondary): 1 or 5 (factory set)
• CT Multiplier: 1, 10, or 100
• CT Fullscale: Calculation Based on Selections (click Recalculate to view)
• PT Numerator (Primary): 1-9999
• PT Denominator (Secondary): 40-600
• PT Multiplier: 1, 10, 100, or 1000
• PT Fullscale: Calculation Based on Selections (click Recalculate to view)
• System Wiring: 3 Element Wye; 2.5 Element Wye; 2 CT Delta
• Phases Displayed: A, AB, or ABC

VOLTS FULL SCALE = PT Numerator x PT Multiplier

Note

NOTE

You must specify Primary and Secondary Voltage in Full Scale. Do not use ratios! The PT
Denominator should be the Secondary Voltage level.
WARNING
Example:
A 14400/120 PT would be entered as:
PT Num: 1440
PT Denom: 120
Multiplier: 10
This example would display a 14.40kV.
Example CT Settings:
200/5 Amps: Set the Ct-n value for 200, Ct-Multiplier value for 1.
800/5 Amps: Set the Ct-n value for 800, Ct-Multiplier value for 1.
2,000/5 Amps: Set the Ct-n value for 2000, Ct-Multiplier value for 1.
10,000/5 Amps: Set the Ct-n value for 1000, Ct-Multiplier value for 10.
Example PT Settings:
277/277 Volts Pt-n value is 277, Pt-d value is 277, Pt-Multiplier is 1.
14,400/120 Volts: Pt-n value is 1440, Pt-d value is 120, Pt-Multiplier value is 10.
138,000/69 Volts: Pt-n value is 1380, Pt-d value is 69, Pt-Multipier value is 100.
345,000/115 Volts: Pt-n value is 3470, Pt-d value is 115, Pt-Multiplier value is 100
345,000/69 Volts: Pt-n value is 345, Pt-d value is 69, Pt-Multiplier value is 1000.

Settings are the same for Wye and Delta configurations.

Note

NOTE

ENERGY AND DISPLAY

The settings on this screen determine the display configuration of the meter
faceplate.

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GE COMMUNICATOR PROGRAMMING OVERVIEW CHAPTER 6: USING THE METER

The fields and allowed entries are as follows:

Power and Energy Format
• Power Scale: Unit, kilo (k), Mega (M), or auto
• Energy Digits: 5, 6, 7, or 8
• Energy Decimal Places: 0-6
• Energy Scale: Unit, kilo (k), or Mega (M)
• Example: Based on Selections (click Recalculate to view)
For Example: a reading for Digits: 8; Decimals: 3; Scale: k would be formatted:
00123.456k
• Power Direction: View as Load
Demand Averaging
• Averaging Method: Block or Rolling
• Interval (Minutes): 5, 15, 30, or 60
• Sub Interval (if Rolling is selected): 1-4
Auto Scroll: Click to Activate
Display Configuration:
• Click Values to be displayed.

You MUST have at least ONE Display Configuration value selected.

Note

NOTE

If incorrect values are entered on the Energy and Display screen the following message
Note

appears:
NOTE

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CHAPTER 6: USING THE METER GE COMMUNICATOR PROGRAMMING OVERVIEW

Current, CT, PT and Energy Settings will cause invalid energy accumulator values.
Change the inputted settings until the message disappears.

SETTINGS

The EPM 2200 Meter is shipped with Password Disabled; there is NO DEFAULT
Note

PASSWORD)
NOTE
The fields are as follows:
• Enable Password for Reset: click to enable
• Enable Password for Configuration: click to enable
• Change Password: click to change
• Device Designation: optional user-assigned label

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GE COMMUNICATOR PROGRAMMING OVERVIEW CHAPTER 6: USING THE METER

6–24 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Chapter 7: Com Option B: BACnet

MS/TP with Modbus
TCP/IP
Com Option B: BACnet MS/TP with Modbus TCP/IP

The Communication Options available for the EPM 2200 are connected and used in
different ways.
• Com Option S: Modbus/KYZ output is explained in Chapter 5 on page 5-1.
• Com Option B: BACnet MS/TP with Modbus TCP/IP Internet is explained in here in
Chapter 7.

7.1 BACnet MS/TP

BACnet is a data communication protocol developed for Building Control applications in
1987. BACnet allows applications to process data from many different kinds of equipment
and manufacturers. Originally it was used for HVAC control systems, but it has been
extended to other building systems, including lighting and energy management. Today
BACnet is one of the two most widely used Building Automation protocols in use. It is an
ASHRAE/ANSI/ISO standard protocol.
The BACnet protocol consists of Objects that contain different kinds of information. Each
Object has properties that contain data related to it. Below is the example of an Object for
Total Watts:
• Object_Name, PWR_ELEC
• Object_Type, Analog Input
• Object_Instance, AI-101018
• Present_Value, watt, tot (value in watts)
BACnet operates in a client-server environment. A client machine sends a service request
(message) to a server machine; once the service is performed the results are reported back
to the client machine. BACnet defines 5 groups (or classes) of 35 message types. For
example, one class contains messages for retrieving and manipulating the object
properties described above. An example of a common service request in this class is
"ReadProperty." When the server machine receives this message from a client machine, it

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EPM 2200 METER BACNET OBJECTS CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

locates the requested property of the requested object and sends the value to the client.
Other classes of service requests have to do with alarms and events; file uploading/
downloading; managing remote device operation; and virtual terminal functions.
The EPM 2200 meter communicates BACnet MS/TP protocol though its RS485 serial port,
allowing it to act as a BACnet device in any BACnet application. The meter also has a Web
interface via its RJ45 Ethernet port that you can use to remotely set up the BACnet MS/TP
and for Modbus TCP/IP configuration. The Ethernet port can also track energy readings
through the internet using any standard Web browser. The EPM 2200 meter uses BACnet
MS/TP (master-slave/token-passing), which is designed to run at speeds of 1 Mbps or less
over twisted pair wiring, and in which the device takes turns being a master and a slave,
dependent on whether it is sending or receiving data.
For more detailed information, visit the BACnet website at www.bacnet.org.

7.2 EPM 2200 meter BACnet Objects

The EPM 2200 meter BACnet MS/TP implementation has 34 predefined objects of electrical
measurements. No programming or mapping is necessary to use the BACnet objects. The
object’s names easily identify the measurements they contain.
All of the objects, with the exception of Modbus Meter and POLL_DELAY are AI (Analog
Input) Object type. The following table lists each of the objects with their units of
measurement and description.
Object Name Unit of Measurement Description
Modbus Meter-147222 none (Addr. 1)
POLL_DELAY AV-1 Polling Delay
VOLTAGE_LN-A volt Voltage A-N
VOLTAGE_LN-B volt Voltage B-N
VOLTAGE_LN-C volt Voltage C-N
VOLTAGE_LL-AB volt Voltage A-B
VOLTAGE_LL-BC volt Voltage B-C
VOLTAGE_LL-CA volt Voltage C-A
CURRENT_LN-A amp Current A
CURRENT_LN-B amp Current B
CURRENT_LN-C amp Current C
PWR_ELEC watt Total Active Power
PWR_ELEC_REACT volt-amp-reactive Total Reactive Power
PWR_ELEC_APPAR volt-amp Total Apparent Power
PWR_FACTOR --- Total Power Factor
FREQUENCY Hertz Frequency
CURRENT_NG amp Neutral Current
ENERGY_ELEC_ACCUM_REC* watt-hour Active Energy Received
ENERGY_ELEC_ACCUM_DEL* watt-hour Active Energy Delivered
ENERGY_ELEC_ACCUM_NET* watt-hour Active Energy Net
ENERGY_ELEC_ACCUM* watt-hour Total Active Energy
ENERGY_ELEC_ACCUM_REACT_REC* watt-hour Positive Reactive Energy
ENERGY_ELEC_ACCUM_REACT_DEL* watt-hour Negative Reactive Energy
ENERGY_ELEC_ACCUM_REACT_NET* watt-hour Reactive Energy Net

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CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP CONFIGURING COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

Object Name Unit of Measurement Description

ENERGY_ELEC_ACCUM_REACT* watt-hour Total Reactive Energy
ENERGY_ELEC_ACCUM_APPAR* watt-hour Total Apparent Energy
DEMAND_POS watt Positive Active Demand, 3-Phase,
Average Demand
DEMAND_REACT_POS volt-amp-reactive Positive Reactive Demand, 3-
phase, Average Demand
DEMAND_NEG watt Negative Active Demand, 3-
Phase, Average Demand
DEMAND_REACT_NEG volt-amp-reactive Negative Reactive Demand, 3-
Phase, Average Demand
DEMAND_APPAR volt-amp Apparent Demand, 3-Phase,
Average Demand
DEMAND_PEAK_POS watt Positive Active Demand, 3-Phase,
Max Average Demand
DEMAND_REACT_PEAK_POS volt-amp-reactive Positive Reactive Demand, 3-
phase, Max Average Demand
DEMAND_PEAK_NEG watt Negative Active Demand, 3-
Phase, Max Average Demand
DEMAND_REACT_PEAK_NEG volt-amp-reactive Negative Reactive Demand, 3-
Phase, Max Average Demand
DEMAND_APPAR_PEAK volt-amp Apparent Demand, 3-Phase, Max
Average Demand

* For optimal accuracy and resolution the accumulators’ attributes are factory preset to: 6
digits, no fractions – zero decimal places and kilo multiplier (Modbus register address:
30,006, decimal). We recommended you maintain these settings all of the time.

7.3 Configuring Com Option B: BACnet MS/TP with Modbus TCP/IP

You must first set the Network configuration so you can communicate with the EPM 2200
meter. Follow these steps:
1. Configure your LAN connection to IP address 10.0.0.100, subnet mask 255.255.255.0:

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CONFIGURING COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

• Click Start > Control Panel > Network Connections.

You will see a screen like the one shown below.

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CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP CONFIGURING COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

• Right-click on the LAN connection you want to use and click Properties.
You will see the screen shown below.

• Scroll and highlight Internet Protocol TCP/IP, then click the Properties
button.
You will see the screen shown below.

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CONFIGURING COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

• Click the Use the Following IP Address radio button and enter:
• IP Address: 10.0.0.100
• Subnet Mask: 255.255.255.0
• Click OK.
The Local Area Connection Properties screen redisplays.
• Click OK.
2. Use an Ethernet cable to connect the meter to your LAN port.

Insert Ethernet
Cable here

3. Open your web browser and connect to the meter at the default address by typing
http://10.0.0.1.

If this doesn’t work, reset the meter to this default address by pressing the Reset button for
Note

30 seconds. See “Resetting the Ethernet Card” on page 10 for instructions.

NOTE
4. You will see a User Authentication screen. Enter the following default settings:
• User name: admin
• Password: admin

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5. Click OK. You will see the BACnet MS/TP Interface webpage, shown below.

6. Click TCP/IP and BACnet Settings on the left side of the webpage to see the page
shown below. Use this page to change the default IP address (10.0.0.1) to an IP
address in the same subnet as your Network. Contact your System Administrator if
you are unsure of the correct address to use.

You can also change the following fields:

• Network Mask - the subnet mask. The default is 255.255.255.0.
• Default Gateway - the IP address of the gateway. The default is 10.0.0.224.
• BACnet Device Number - a numeric code used to identify the meter. This number
is auto-generated from the MAC address.
• BACnet Device Name - field for the device name, which can be up to 63
characters in length.
• BACnet Device Description - optional field where you can enter a description of
up to 63 characters which will be added as a prefix in the name of all registers
representing the meter’s BACnet objects.

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CONFIGURING COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

• Modbus TCP Port for TCP to RTU Router - the default port is 502. As long as this
field is not 0, the router is enabled, which lets the meter communicate with
Modbus TCP/IP Master devices.
• Enable BACnet/IP Control Objects - Check this box to allow direct access to
Modbus registers. If enabled, the Control Objects are represented by the following
three Analog-Value BACnet Objects:
• 500001 is a writeable object called MOD_ID_TARGET (“target device
identifier to be read/written”). Since the meter has a hard-coded Modbus
address of “1” only this value needs to be entered before first access to a
Modbus register. The default = -1.0. -1.0 also means do not execute
#500003 (neither read nor write).
• 500002 is a writeable object called MOD_REGISTER (“register to be read/
written”); for example, “1000” to access the first register of volts A-N. The
default = -1.0 after any reboot. -1.0 also means do not execute #500003
(neither read nor write).
• 500003 is a readable/writeable value called MOD_VALUE (“value to be read
from or written to select register”).
The MOD_REGISTER resets with -1.0 after each Read/Write (whether or not
successful), from/to MOD_VALUE with valid MOD_ID_TARGET and
MOD_REGISTER. MOD_REGISTER will also be set to -1.0 30 seconds after it is
written to.
7. Click OK to process your changes. You will see the following message

You still need to activate the configuration for the changes to take effect.

You can change all settings back to their default by clicking the Restore Default button at
Note

the bottom of the page.

NOTE
8. Click MS/TP Settings on the left side of the webpage to see the page shown below.
Use this page to make any necessary changes to your MS/TP settings.

You can change the following fields:

• Baud Rate - select the baud rate you need from the pull-down menu.
• This station (MAC) - the MAC address of this MS/TP node (the EPM 2200 meter).

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• Max Info Frames - this is the maximum number of information frames the node is
allowed to send before it needs to pass the token.
• Max Master - this is the highest allowable address for master nodes (cannot be
higher than 127); a Max master greater than 36 is recommended for data sets.
9. Click the Advanced button to display additional settings.

We recommend you do not change any Advanced settings.

Note

NOTE

10. Click OK to process your changes.

11. Click Activate Configuration from the left side of the webpage to implement any
changes you made. You will see the page shown below.

12. Click the Confirm button to process the changes. You will see the message shown
below (the IP Address shown in the link is just an example).

13. The meter resets. Connect the meter Ethernet cable to your Network (remove it from
your PC). You can now connect to the meter through your Network using the new IP
address.

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USING THE EPM 2200 METER’S WEB INTERFACE CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

7.3.1 Resetting the Ethernet Card

The Ethernet card’s Reset Button is accessed from the back of the EPM 2200 meter. See
figure below for button location.

Reset Button

Figure 7-1: Backplate of EPM 2200 meter, showing Reset Button placement
Using an implement such as a ballpoint pen tip, press and hold the Reset button for 30
seconds. The Ethernet card will be reset to its default settings.

7.4 Using the EPM 2200 Meter’s Web Interface

As shown in Section 7.3, you can use the meter’s web interface to change the IP address
and other Network parameters. You can also view information and readings using the web
interface. This section explains the web pages other than the BACnet MS/TP Settings and
Activate Configuration web pages, which are explained in Section 7.3.

7.4.1 Home web page

The Home web page is shown at the top of page 7–7. It is the first page you see when you
connect to the meter.

To access this web page from any of the other pages, click Home on the left side of the
Note

page.
NOTE

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This web page shows the current power, power factor, accumulated energy, and peak
demand readings from the meter. You can download all of the meter BACnet data by
clicking the Download data.csv button. You will see the following screen:

This screen gives you the option to open or save an Excel file with the BACnet meter data.
• Click Open to open an Excel file with the meter’s BACnet data.
• Click Save to save a copy of the Excel file.
• Click Cancel to close the screen without opening or saving the file.
An example file is shown below:

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USING THE EPM 2200 METER’S WEB INTERFACE CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

7.4.2 BACnet Objects Status web page

• Click BACnet Objects Status on the left side of the web page to view readings for the
meter’s embedded BACnet objects. You will see a screen like the one shown below.

Scroll to see all of the objects on the screen. The following items are shown for each
BACnet Object:
• Name
• Object
• Value
• Units
• OK (Reliability)
• Description

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7.4.3 Change Password web page

• Click Change Password on the left side of the web page to access the page shown
below.

Use this page to change the Administrator Login and Password for this interface. We
recommend that you change the Login and Password rather than continuing to use the
default sign-on (be sure to store this information someplace safe).

7.4.4 Statistics web page

• Click Statistics on the left side of the web page to access the page shown below.

This page lists information and any Error log for the meter.
• To erase the Error log, click the Clear Log button.

EPM 2200 POWER METER – INSTRUCTION MANUAL 7–13

USING THE EPM 2200 IN A BACNET APPLICATION CHAPTER 7: COM OPTION B: BACNET MS/TP WITH MODBUS TCP/IP

7.4.5 Reset Configuration web page

• Click Reset Configuration on the left side of the web page if you want to set the
configuration back to its default or last configuration. You will see the page shown
below.

• Click the Restore Default button to restore all settings to the factory
default values.
• Click the Discard Changes button to restore all settings to the last saved
configuration.

7.5 Using the EPM 2200 in a BACnet Application

Once you have configured the EPM 2200 meter, you can connect the RS485 port to your
BACnet implementation and use it as a standard BACnet client. As there are many kinds of
BACnet applications, we recommend you consult your application’s instructions for details.
In addition to integrating with BACnet applications, the EPM 2200 meter can also be
accessed through GE Communicator software (see the GE Communicator Instruction
Manual). Additionally, all of the BACnet data can be polled through the Modbus registers
(see Appendix B: “Modbus Mapping for EPM 2200” on page 1 for the Modbus map).

7–14 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Appendix A: EPM 2200 Navigation

Maps

EPM 2200 Navigation Maps

A.1 Introduction
The EPM 2200 meter can be configured and a variety of functions performed using the
buttons on the meter face.
• An Overview of the Elements and Buttons on the meter face, and programming using
the buttons can be found in Chapter 6 on page 6-1.
• The meter can also be programmed using software (see the GE Communicator
Instruction Manual).

A.2 Navigation Maps (Sheets 1 to 4)

The EPM 2200 Navigation Maps begin on the next page.
They show in detail how to move from one screen to another and from one Display Mode
to another using the buttons on the face of the meter. All Display Modes will automatically
return to Operating Mode after 10 minutes with no user activity.

A.2.1 EPM 2200 Navigation Map Titles:

Main Menu Screens (Sheet 1)
Operating Mode Screens (Sheet 2)
Reset Mode Screens (Sheet 3)
Configuration Mode Screens (Sheet 4)

EPM 2200 POWER METER – INSTRUCTION MANUAL A–1

 NAVIGATION MAPS (SHEETS 1 TO 4) APPENDIX A: EPM 2200 NAVIGATION MAPS

Figure A-1: Main Menu Screens (Sheet 1)

STARTUP

sequence run once at meter startup:

2 lamp test screens, hardware
information screen, firmware version
screen, error screen (conditional)

sequence completed

10 minutes with no user activity

OPERATING MODE
10 minutes with
10 minutes with no user activity
no user activity grid of meter data screens.
See sheet 2
MENU

MENU
ENTER

MENU

CONFIGURATION MODE* RESET MODE

MAIN MENU: MAIN MENU: MAIN MENU:
grid of meter settings screens CFG (blinking) OPR (blinking) RST (blinking) sequence of screens to get
ENTER DOWN DOWN ENTER
with password-protected edit OPR RST CFG password, if required, and reset
capability. RST CFG OPR meter data.
See sheet 4 See sheet 3

DOWN
* Configuration Mode is
MENU
not available during a
Programmable Settings MAIN MENU Screen
update via a COM port.

MAIN MENU screen scrolls through 3 choices, showing

all 3 at once. The top choice is always the "active" one,
which is indicated by blinking the legend.

BUTTONS
MENU Returns to previous menu from any screen in any mode

ENTER Indicates acceptance of the current screen and advances to the next one

DOWN, RIGHT Navigation and edit buttons

Navigation: No digits or legends are blinking. On a menu, down advances to the next menu selection, right does nothing. In a grid of
screens, down advances to the next row, right advances to the next column. Rows, columns, and menus all navigate circularly.
Editing: A digit or legend is blinking to indicate that it is eligible for change. When a digit is blinking, down increases the digit value, right
moves to the next digit. When a legend is blinking, either button advances to the next choice legend.

all screens
single group of
for a display action taken button
screen screens
mode

A–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

APPENDIX A: EPM 2200 NAVIGATION MAPS NAVIGATION MAPS (SHEETS 1 TO 4)

Figure A-2: Operating Mode Screens (Sheet 2)

See Notes 1 & 3

RIGHT

VOLTS_LN_MA
VOLTS_LN RIGHT RIGHT VOLTS_LN_MIN
X

DOWN2
(from any VOLTS_LN screen) DOWN2

See Note 1
RIGHT

VOLTS_LL RIGHT VOLTS_LL_MAX RIGHT VOLTS_LL_MIN

DOWN2
(from any VOLTS_LL screen)

See Note 1
RIGHT

AMPS RIGHT IN RIGHT AMPS_MAX RIGHT AMPS_MIN

DOWN2
(from any AMPS screen) DOWN2

See Note 1
RIGHT

W_VAR_PF W_VAR_PF W_VAR_PF W_VAR_PF

W_VAR_PF RIGHT RIGHT RIGHT RIGHT
_MAX_POS _MIN_POS _MAX_NEG _MIN_NEG

DOWN2
DOWN2
(from any W_VAR_PF screen)

See Note 1
RIGHT

VA_FREQ RIGHT VA_FREQ_MAX RIGHT VA_FREQ_MIN

DOWN2
(from any VA_FREQ screen)

See Note 1
RIGHT

KWH_REC RIGHT KWH_DEL RIGHT KWH_NET RIGHT KWH_TOT

DOWN2
(from any KWH screen)

See Note 1
RIGHT

KVARH_POS RIGHT KVARH_NEG RIGHT KVARH_NET RIGHT KVARH_TOT

DOWN2
(from any KVARH screen)

See Note 1 Notes

1 Group is skipped if not applicable to the meter type or hookup or if explicitly disabled via
KVAH programmable settings.
2 DOWN occurs without user intervention every 7 seconds if scrolling is enabled.
3 No Volts LN screens for Delta 2CT hookup.
4 Scrolling is suspended for 3 minutes after any button press.

MENU
(from any
operating mode
to Main Menu
screen)
see sheet 1

EPM 2200 POWER METER – INSTRUCTION MANUAL A–3

NAVIGATION MAPS (SHEETS 1 TO 4) APPENDIX A: EPM 2200 NAVIGATION MAPS

Figure A-3: Reset Mode Screens (Sheet 3)

from MAIN MENU

RESET_NO: RIGHT RESET_YES:

RST RST
ALL? ALL?
no (blinking) RIGHT yes (blinking)

ENTER

is password required?

2 sec
yes

increment make next digit

DOWN RESET_ENTER_PW: RIGHT
no blinking digit blink
PASS
#### (one # blinking)

ENTER

ENTER
RESET_PW_FAIL:
reset all max & is password PASS
yes no
min values correct? ####
FAIL

RESET_CONFIRM:
RST
ALL
DONE

2 sec.

MENU
(from any
to previous operating reset mode
mode screen screen)
see sheet 2

to Main Menu
see sheet 1

A–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

APPENDIX A: EPM 2200 NAVIGATION MAPS NAVIGATION MAPS (SHEETS 1 TO 4)

Figure A-4: Configuration Mode Screens (Sheet 4)

See Note 1

CONFIG_MENU: ENTER SCROLL_EDIT:

SCRL (blinking) SCRL DOWN or
CT yes or no RIGHT3
PT (choice blinking if edit) toggle
scroll
setting
DOWN ENTER
MENU

CONFIG_MENU: ENTER
CT (blinking) ENTER ENTER
PT
CNCT CTN_EDIT: CTD_SHOW: CT_MULT_EDIT:
CT-N CT-D CT-S DOWN or
DOWN RIGHT
increment #### blink 1 or 5 1 or 10 or 100 RIGHT
blinking (one # blinking if edit) next (choice blinking if edit) show
DOWN
MENU digit digit next
choice
ENTER
CONFIG_MENU: ENTER
PT (blinking)
CNCT
ENTER ENTER
PORT

PTN_EDIT: PTD_EDIT: PT_MULT_EDIT:

PT-N PT-D PT-S DOWN or
DOWN RIGHT DOWN RIGHT 1 or 10 or 100 or 1000 RIGHT
increment #### blink increment #### blink
DOWN (one # blinking if edit) (one # blinking if edit) (choice blinking if edit) show
MENU blinking next blinking next
next
digit digit digit digit
choice
DOWN
ENTER
CONFIG_MENU: ENTER
CNCT (blinking)
PORT
PASS2
CNCT choices:
MENU ENTER CONNECT_EDIT: 3 EL WYE,
CNCT DOWN or 2 CT DEL,
1 of 3 choices RIGHT
(choice blinking if edit) show 2.5EL WYE
DOWN next
MENU
choice
PROT choices:
CONFIG_MENU: ENTER RTU, ASCII
ENTER
PORT (blinking)
PASS2 ENTER ENTER
SCRL
ADDRESS_EDIT: BAUD_EDIT: PROTOCOL_EDIT:
ADR BAUD DOWN or PROT DOWN or
DOWN RIGHT
2
increment ### blink ##.# RIGHT 1 of 3 choices RIGHT
DOWN
MENU 2
blinking (one # blinking if edit) next (choice blinking if edit) show (choice blinking if edit) show
next next
digit digit
choice choice

CONFIG_MENU:
PASS2 (blinking) ENTER2
ENTER
SCRL
CT
Notes:
1. Initial access is view-only. View access shows the existing settings. At the
PASSWORD_EDIT: first attempt to change a setting (DOWN or RIGHT pressed), password is
CONFIG_MENU screen DOWN PASS RIGHT
scrolls through 6 choices, increment #### (one # blinking) blink requested (if enabled) and access changes to edit. Edit access blinks the digit
showing 3 at a time. The blinking next or list choice eligible for change and lights the PRG LED.
top choice is always the digit digit 2. Skip over password edit screen and menu selection if access is view-only.
"active" one, indicated by 3. Scroll setting may be changed with view or edit access.
blinking the legend. 4. ENTER accepts an edit; MENU abandons it.

first DOWN or RIGHT in view See Note 1

MENU
MENU access (if password required)
(per row of the originating screen)

CFG_ENTER_PW:
PASS
SAVE_YES: save new DOWN RIGHT
any changes? yes ENTER ### (one # blinking)
configuration yes
STOR
increment blink
ALL?
blinking next
yes (blinking)
digit digit
SAVE_CONFIRM: ENTER
STOR
no ALL
MENU RIGHT RIGHT DONE is password
correct? to the originating
EDIT screen
2 sec. no
SAVE_NO:
to Main Menu STOR reboot
MENU to previous operating
ALL?
see sheet 1 no (blinking) ENTER mode screen
see sheet 2

EPM 2200 POWER METER – INSTRUCTION MANUAL A–5

NAVIGATION MAPS (SHEETS 1 TO 4) APPENDIX A: EPM 2200 NAVIGATION MAPS

A–6 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Appendix B: Modbus Mapping for

EPM 2200

Modbus Mapping for EPM 2200

B.1 Introduction
The Modbus Map for the EPM 2200 Meter gives details and information about the possible
readings of the meter and about the programming of the meter.
The EPM 2200 can be programmed using the buttons on the face plate of the meter (6.1
Programming Using the Faceplate). The meter can also be programmed using software. For
a Programming Overview, see section 6.4 GE Communicator Programming Overview of this
manual. For further details see the GE Communicator Instruction Manual.

B.2 Modbus Register Map Sections

The EPM 2200 Modbus Register Map includes the following sections:
Fixed Data Section, Registers 1- 47, details the Meter’s Fixed Information.
Meter Data Section, Registers 1000 - 5003, details the Meter’s Readings, including Primary
Readings, Energy Block, Demand Block, Maximum and Minimum Blocks, THD Block, Phase
Angle Block and Status Block. Operating Mode readings are described in Section 6.1.13
Operating Mode on page 6–14.
Commands Section, Registers 20000 - 26011, details the Meter’s Resets Block,
Programming Block, Other Commands Block and Encryption Block.
Programmable Settings Section, Registers 30000 - 30067, details the Meter’s Basic Setups.
Secondary Readings Section, Registers 40001 - 40100, details the Meter’s Secondary
Readings Setups.

EPM 2200 POWER METER – INSTRUCTION MANUAL B–1

DATA FORMATS APPENDIX B: MODBUS MAPPING FOR EPM 2200

B.3 Data Formats

ASCII: ASCII characters packed 2 per register in high, low order and without any
termination charcters.
Example: “EPM2200” would be 4 registers containing 0x5378, 0x6172, 0x6B31,
0x3030.
SINT16/UINT16:16-bit signed/unsigned integer.
SINT32/UINT32:32-bit signed/unsigned integer spanning 2 registers. The lower-addressed
register is the high order half.
FLOAT:32-bit IEEE floating point number spanning 2 registers. The lower-addressed
register is the high order half (i.e., contains the exponent).

B.4 Floating Point Values

Floating Point Values are represented in the following format:

Register 0 1
Byte 0 1 0 1
Bit 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Meaning s e e e e e e e e m m m m m m m m m m m m m m m m m m m m m m m
sign exponent mantissa

The formula to interpret a Floating Point Value is: -1sign x 2exponent-127 x 1.mantissa =
0x0C4E11DB9
-1sign x 2137-127 x 1.11000010001110111001
-1 x 210 x 1.75871956
-1800.929

Register 0x0C4E1 0x01DB9

Byte 0x0C4 0x0E1 0x01D 0x0B9
Bit 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
1 1 0 0 0 1 0 0 1 1 1 0 0 0 0 1 0 0 0 1 1 1 0 1 1 0 1 1 1 0 0 1
Meaning s e e e e e e e e m m m m m m m m m m m m m m m m m m m m m m m
sign exponent mantissa
1 0x089 = 137 0b11000010001110110111001

Formula Explanation
C4E11DB9 (hex) 11000100 11100001 00011101 10111001 (binary)
The sign of the Mantissa (and therefore the number) is 1, which represents a negative
value.
The Exponent is 10001001 (binary) or 137 decimal.
The Exponent is a value in excess of 127, so the Exponent value is 10.

B–2 EPM 2200 POWER METER – INSTRUCTION MANUAL

APPENDIX B: MODBUS MAPPING FOR EPM 2200 MODBUS REGISTER MAP

The Mantissa is 11000010001110110111001 binary.

With the implied leading 1, the Mantissa is (1).C23B72 (hex).

The Floating Point Representation is therefore -1.75871956 x 210

Decimal equivalent: -1800.929

Exponent = the whole number before the decimal point

Note

NOTE
Mantissa = the positive fraction after the decimal point

B.5 Modbus Register Map

Table B–1: Modbus Register Map (Sheet 1 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g

Fixed Data Section

Identification Block
read-only
0000 - 0007 1 - 8 Meter Name ASCII 16 char none 8
0008 - 000F 9 - 16 Meter Serial Number ASCII 16 char none 8
0010 - 0010 17 - 17 Meter Type UINT16 bit-mapped -------t -----vvv t=0 1
vvv = Software Option A1,
B1, or C1
0011 - 0012 18 - 19 Firmware Version ASCII 4 char none 2
0013 - 0013 20 - 20 Map Version UINT16 0 to 65535 none 1
0014 - 0014 21 - 21 Meter Configuration UINT16 bit-mapped -------- --ffffff ffffff = calibration 1
frequency (50 or 60)
0015 - 0015 22 - 22 ASIC Version UINT16 0-65535 none 1
0016 - 0026 23 - 39 Reserved 17
0027 - 002E 40 - 47 OEM Part Number 8
Block Size: 47

Meter Data Section2

Primary Readings Block, 6 cycles (IEEE Floating read-only
0383 - 0384 900 - 901 Watts, 3-Ph total FLOAT -9999 M to +9999 M watts 2
0385 - 0386 902 - 903 VARs, 3-Ph total FLOAT -9999 M to +9999 M VARs 2
0387 - 0388 904 - 905 VAs, 3-Ph total FLOAT -9999 M to +9999 M VAs 2
Block Size: 6

Primary Readings Block, 60 cycles (IEEE Floating Point) read-only

03E7 - 03E8 1000 - 1001 Volts A-N FLOAT 0 to 9999 M volts 2
03E9 - 03EA 1002 - 1003 Volts B-N FLOAT 0 to 9999 M volts 2
03EB - 03EC 1004 - 1005 Volts C-N FLOAT 0 to 9999 M volts 2
03ED - 03EE 1006 - 1007 Volts A-B FLOAT 0 to 9999 M volts 2
03EF - 03F0 1008 - 1009 Volts B-C FLOAT 0 to 9999 M volts 2
03F1 - 03F2 1010 - 1011 Volts C-A FLOAT 0 to 9999 M volts 2
03F3 - 03F4 1012 - 1013 Amps A FLOAT 0 to 9999 M amps 2
03F5 - 03F6 1014 - 1015 Amps B FLOAT 0 to 9999 M amps 2

EPM 2200 POWER METER – INSTRUCTION MANUAL B–3

MODBUS REGISTER MAP APPENDIX B: MODBUS MAPPING FOR EPM 2200

Table B–1: Modbus Register Map (Sheet 2 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g
03F7 - 03F8 1016 -
Amps C 1017 FLOAT 0 to 9999 M amps 2
03F9 - 03FA 1018 - 1019
Watts, 3-Ph total FLOAT -9999 M to +9999 M watts 2
03FB - 03FC 1020 - 1021
VARs, 3-Ph total FLOAT -9999 M to +9999 M VARs 2
03FD - 03FE 1022 - 1023
VAs, 3-Ph total FLOAT -9999 M to +9999 M VAs 2
03FF - 0400 1024 - 1025
Power Factor, 3-Ph FLOAT -1.00 to +1.00 none 2
total
0401 - 0402 1026 - 1027 Frequency FLOAT 0 to 65.00 Hz 2
0403 - 0404 1028 - 1029 Neutral Current FLOAT 0 to 9999 M amps 2
Block Size: 30

Primary Energy Block

read-only
044B - 044C 1100 - 1101 W-hours, Received SINT32 0 to 99999999 or Wh per energy * Wh received & delivered 2
0 to -99999999 format always have opposite
044D - 044E 1102 - 1103 W-hours, Delivered SINT32 0 to 99999999 or Wh per energy * Wh received is positive 2
0 to -99999999 format for "view as load",
044F - 0450 1104 - 1105 W-hours, Net SINT32 -99999999 to Wh per energy delivered is positive for 2
99999999 format "view as generator"
0451 - 0452 1106 - 1107 W-hours, Total SINT32 0 to 99999999 Wh per energy * 5 to 8 digits 2
format
0453 - 0454 1108 - 1109 VAR-hours, Positive SINT32 0 to 99999999 VARh per energy * decimal point implied, 2
format per energy format
0455 - 0456 1110 - 1111 VAR-hours, Negative SINT32 0 to -99999999 VARh per energy * resolution of digit before 2
format decimal point = units, kilo,
0457 - 0458 1112 - 1113 VAR-hours, Net SINT32 -99999999 to VARh per energy or mega, per energy 2
99999999 format format
0459 - 045A 1114 - 1115 VAR-hours, Total SINT32 0 to 99999999 VARh per energy 2
format
045B - 045C 1116 - 1117 VA-hours, Total SINT32 0 to 99999999 VAh per energy * see note 10 2
format
Block Size: 18

Primary Demand Block (IEEE Floating Point)

read-only
07CF - 07D0 2000 - 2001 Amps A, Average FLOAT 0 to 9999 M amps 2
07D1 - 07D2 2002 - 2003 Amps B, Average FLOAT 0 to 9999 M amps 2
07D3 - 07D4 2004 - 2005 Amps C, Average FLOAT 0 to 9999 M amps 2
07D5 - 07D6 2006 - 2007 Positive Watts, 3-Ph, FLOAT -9999 M to +9999 M watts 2
Average
07D7 - 07D8 2008 - 2009 Positive VARs, 3-Ph, FLOAT -9999 M to +9999 M VARs 2
Average
07D9 - 07DA 2010 - 2011 Negative Watts, 3-Ph, FLOAT -9999 M to +9999 M watts 2
Average
07DB - 07DC 2012 - 2013 Negative VARs, 3-Ph, FLOAT -9999 M to +9999 M VARs 2
Average
07DD - 07DE 2014 - 2015 VAs, 3-Ph, Average FLOAT -9999 M to +9999 M VAs 2
07DF - 07E0 2016 - 2017 Positive PF, 3-Ph, FLOAT -1.00 to +1.00 none 2
Average
07E1 - 07E2 2018 - 2019 Negative PF, 3-PF, FLOAT -1.00 to +1.00 none 2
Average
Block Size: 20

Primary Minimum Block (IEEE Floating Point)

read-only
0BB7 - 0BB8 3000 - 3001 Volts A-N, Minimum FLOAT 0 to 9999 M volts 2
0BB9 - 0BBA 3002 - 3003 Volts B-N, Minimum FLOAT 0 to 9999 M volts 2
0BBB - 0BBC 3004 - 3005 Volts C-N, Minimum FLOAT 0 to 9999 M volts 2
0BBD - 0BBE 3006 - 3007 Volts A-B, Minimum FLOAT 0 to 9999 M volts 2
0BBF - 0BC0 3008 - 3009 Volts B-C, Minimum FLOAT 0 to 9999 M volts 2
0BC1 - 0BC2 3010 - 3011 Volts C-A, Minimum FLOAT 0 to 9999 M volts 2

B–4 EPM 2200 POWER METER – INSTRUCTION MANUAL

APPENDIX B: MODBUS MAPPING FOR EPM 2200 MODBUS REGISTER MAP

Table B–1: Modbus Register Map (Sheet 3 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g
0BC3 - 0BC4 3012 - 3013 Amps A, Minimum Avg FLOAT 0 to 9999 M amps 2
Demand
0BC5 - 0BC6 3014 - 3015 Amps B, Minimum Avg FLOAT 0 to 9999 M amps 2
Demand
0BC7 - 0BC8 3016 - 3017 Amps C, Minimum Avg FLOAT 0 to 9999 M amps 2
Demand
0BC9 - 0BCA 3018 - 3019 Positive Watts, 3-Ph, FLOAT 0 to +9999 M watts 2
Minimum Avg Demand
0BCB - 0BCC 3020 - 3021 Positive VARs, 3-Ph, FLOAT 0 to +9999 M VARs 2
Minimum Avg Demand
0BCD - 0BCE 3022 - 3023 Negative Watts, 3-Ph, FLOAT 0 to +9999 M watts 2
Minimum Avg Demand
0BCF - 0BD0 3024 - 3025 Negative VARs, 3-Ph, FLOAT 0 to +9999 M VARs 2
Minimum Avg Demand
0BD1 - 0BD2 3026 - 3027 VAs, 3-Ph, Minimum FLOAT -9999 M to +9999 M VAs 2
Avg Demand
0BD3 - 0BD4 3028 - 3029 Positive Power Factor, FLOAT -1.00 to +1.00 none 2
3-Ph, Minimum Avg
Demand
0BD5 - 0BD6 3030 - 3031 Negative Power Factor, FLOAT -1.00 to +1.00 none 2
3-Ph, Minimum Avg
Demand
0BD7 - 0BD8 3032 - 3033 Frequency, Minimum FLOAT 0 to 65.00 Hz 2
Block Size: 34

Primary Maximum Block (IEEE Floating Point)

read-only
0C1B - 0C1C 3100 - 3101 Volts A-N, Maximum FLOAT 0 to 9999 M volts 2
0C1D - 0C1E 3102 - 3103 Volts B-N, Maximum FLOAT 0 to 9999 M volts 2
0C1F - 0C20 3104 - 3105 Volts C-N, Maximum FLOAT 0 to 9999 M volts 2
0C21 - 0C22 3106 - 3107 Volts A-B, Maximum FLOAT 0 to 9999 M volts 2
0C23 - 0C24 3108 - 3109 Volts B-C, Maximum FLOAT 0 to 9999 M volts 2
0C25 - 0C26 3110 - 3111 Volts C-A, Maximum FLOAT 0 to 9999 M volts 2
0C27 - 0C28 3112 - 3113 Amps A, Maximum Avg FLOAT 0 to 9999 M amps 2
Demand
0C29 - 0C2A 3114 - 3115 Amps B, Maximum Avg FLOAT 0 to 9999 M amps 2
Demand
0C2B - 0C2C 3116 - 3117 Amps C, Maximum Avg FLOAT 0 to 9999 M amps 2
Demand
0C2D - 0C2E 3118 - 3119 Positive Watts, 3-Ph, FLOAT 0 to +9999 M watts 2
Maximum Avg
Demand
0C2F - 0C30 3120 - 3121 Positive VARs, 3-Ph, FLOAT 0 to +9999 M VARs 2
Maximum Avg
Demand
0C31 - 0C32 3122 - 3123 Negative Watts, 3-Ph, FLOAT 0 to +9999 M watts 2
Maximum Avg
Demand
0C33 - 0C34 3124 - 3125 Negative VARs, 3-Ph, FLOAT 0 to +9999 M VARs 2
Maximum Avg
Demand
0C35 - 0C36 3126 - 3127 VAs, 3-Ph, Maximum FLOAT -9999 M to +9999 M VAs 2
Avg Demand
0C37 - 0C38 3128 - 3129 Positive Power Factor, FLOAT -1.00 to +1.00 none 2
3-Ph, Maximum Avg
Demand
0C39 - 0C3A 3130 - 3131 Negative Power Factor, FLOAT -1.00 to +1.00 none 2
3-Ph, Maximum Avg
Demand
0C3B - 0C3C 3132 - 3133 Frequency, Maximum FLOAT 0 to 65.00 Hz 2
Block Size: 34

EPM 2200 POWER METER – INSTRUCTION MANUAL B–5

MODBUS REGISTER MAP APPENDIX B: MODBUS MAPPING FOR EPM 2200

Table B–1: Modbus Register Map (Sheet 4 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g
Phase Angle Block14 read-only
1003 - 1003 4100 - 4100 Phase A Current SINT16 -1800 to +1800 0.1 degree 1
1004 - 1004 4101 - 4101 Phase B Current SINT16 -1800 to +1800 0.1 degree 1
1005 - 1005 4102 - 4102 Phase C Current SINT16 -1800 to +1800 0.1 degree 1
1006 - 1006 4103 - 4103 Angle, Volts A-B SINT16 -1800 to +1800 0.1 degree 1
1007 - 1007 4104 - 4104 Angle, Volts B-C SINT16 -1800 to +1800 0.1 degree 1
1008 - 1008 4105 - 4105 Angle, Volts C-A SINT16 -1800 to +1800 0.1 degree 1
Block Size: 6

Status Block
read-only
1387 - 1387 5000 - 5000 Meter Status UINT16 bit-mapped --exnpch exnpch = EEPROM block 1
ssssssss OK flags (e=energy,
x=max, n=min,
p=programmable settings,
c=calibration, h=header),
ssssssss = state (1=Run,
2=Limp, 10=Prog Set
Update via buttons,
12=Prog Set Update via
communication port.)

1388 - 1388 5001 - 5001 Not Used N/A

1389 - 138A 5002 - 5003 Time Since Reset UINT32 0 to 4294967294 4 msec wraps around after max 2
count
Block Size: 4

Commands Section4
Resets Block9 write-only
4E1F - 4E1F 20000 - 20000 Reset Max/Min Blocks UINT16 password5 1
4E20 - 4E20 20001 - 20001 Reset Energy UINT16 password5 1
Accumulators
Block Size: 2

Meter Programming Block read/conditional write

55EF - 55EF 22000 - 22000 Initiate Programmable UINT16 password5 meter enters PS update 1
Settings Update mode
55F0 - 55F0 22001 - 22001 Terminate UINT16 any value meter leaves PS update 1
Programmable mode via reset
Settings Update3
55F1 - 55F1 22002 - 22002 Calculate UINT16 meter calculates 1
Programmable checksum on RAM copy of
Settings Checksum3 PS block
55F2 - 55F2 22003 - 22003 Programmable UINT16 read/write checksum 1
Settings Checksum3 register; PS block saved in
8
EEPROM on write
55F3 - 55F3 22004 - 22004 Write New Password3 UINT16 0000 to 9999 write-only register; always 1
reads zero

59D7 - 59D7 23000 - 23000 Initiate Meter UINT16 password5 1

Firmware
Reprogramming
Block Size: 6

Other Commands Block read/write

61A7 - 61A7 25000 - 25000 Force Meter Restart UINT16 password5 causes a watchdog reset, 1
always reads 0
Block Size: 1

B–6 EPM 2200 POWER METER – INSTRUCTION MANUAL

APPENDIX B: MODBUS MAPPING FOR EPM 2200 MODBUS REGISTER MAP

Table B–1: Modbus Register Map (Sheet 5 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g

Encryption Block
read/write
658F - 659A 26000 - 26011 Perform a Secure UINT16 encrypted command to 12
Operation read password or change
meter type
Block Size: 12

Programmable Settings Section (See note 15)

Basic Setups Block write only in PS update
mode
752F - 752F 30000 - 30000 CT multiplier & UINT16 bit-mapped dddddddd high byte is denominator 1
denominator mmmmmmmm (5, read-only),
low byte is multiplier (1, 10,
or 100)
7530 - 7530 30001 - 30001 CT numerator UINT16 1 to 9999 none 1
7531 - 7531 30002 - 30002 PT numerator UINT16 1 to 9999 none 1
7532 - 7532 30003 - 30003 PT denominator UINT16 1 to 9999 none 1
7533 - 7533 30004 - 30004 PT multiplier & hookup UINT16 bit-mapped mmmmmmmm MMMMmmmmmmmm is 1
MMMMhhhh PT multiplier (1, 10, 100,
1000),
hhhh is hookup
enumeration (0 = 3
element wye[9S], 1 = delta
2 CTs[5S], 3 = 2.5 element
7534 - 7534 30005 - 30005 Averaging Method UINT16 bit-mapped --iiiiii b----sss iiiiii = interval (5,15,30,60) 1
b = 0-block or 1-rolling
sss = # subintervals
(1,2,3,4)
7535 - 7535 30006 - 30006 Power & Energy UINT16 bit-mapped pppp--nn -eee- pppp = power scale (0- 1
Format ddd unit, 3-kilo, 6-mega, 8-
auto)
nn = number of energy
digits (5-8 --> 0-3)
eee = energy scale (0-unit,
3-kilo, 6-mega)
ddd = energy digits after
decimal point (0-6)
See note 10.

7536 - 7536 30007 - 30007 Operating Mode UINT16 bit-mapped 00000000 eeeeeeee = op mode 1
Screen Enables eeeeeeee screen rows on(1) or off(0),
rows top to bottom are
bits low order to high order
7537 - 753D 30008 - 30014 Reserved 7
753E - 753E 30015 - 30015 User Settings Flags UINT16 bit-mapped ---g--nn srp--wf- g = enable alternate full 1
scale bargraph current
(1=on, 0=off)
nn = number of phases for
voltage & current screens
(3=ABC, 2=AB, 1=A, 0=ABC)
s = scroll (1=on, 0=off)
r = password for reset in
use (1=on, 0=off)
p = password for
configuration in use (1=on,
0=off)
w = pwr dir (0-view as
load, 1-view as generator)
f = flip power factor sign
(1=yes, 0=no)

EPM 2200 POWER METER – INSTRUCTION MANUAL B–7

MODBUS REGISTER MAP APPENDIX B: MODBUS MAPPING FOR EPM 2200

Table B–1: Modbus Register Map (Sheet 6 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g
753F - 753F 30016 - 30016 Full Scale Current (for UINT16 0 to 9999 none If non-zero and user 1
load % bargraph) settings bit g is set, this
value replaces CT
numerator in the full scale
current calculation.
7540 - 7547 30017 - 30024 Meter Designation ASCII 16 char none 8
7548 - 7548 30025 - 30025 Not Used 1

7549 - 7549 30026 - 30026 COM2 setup UINT16 bit-mapped ----dddd -ppp- dddd = reply delay (* 50 1
bbb
msec)
ppp = protocol (1-Modbus
RTU, 2-Modbus ASCII)
bbb = baud rate (1-9600,
2-19200, 4-38400, 6-
57600)
754A - 754A 30027 - 30027 COM2 address UINT16 1 to 247 none 1
754B - 754B 30028 - 30028 Not Used N/A 1

754C - 754C 30029 - 30029 Not Used N/A 1

754D - 754D 30030 - 30030 Not Used N/A 1

754E - 754E 30031 - 30031 Not Used N/A 1

754F - 754F 30032 - 30032 Not Used N/A 1

7550 - 7554 30033 - 30037 Not Used N/A 5

7555 - 7559 30038 - 30042 Not Used N/A 5
755A - 755E 30043 - 30047 Not Used N/A 5
755F - 7563 30048 - 30052 Not Used N/A 5
7564 - 7568 30053 - 30057 Not Used N/A 5
7569 - 756D 30058 - 30062 Not Used N/A 5
756E - 7572 30063 - 30067 Not Used N/A 5
Block Size: 68

Secondary Readings Section

12-Bit Block read-only except as
noted
9C40 - 9C40 40001 - 40001 System Sanity UINT16 0 or 1 none 0 indicates proper meter 1
Indicator operation
9C41 - 9C41 40002 - 40002 Volts A-N UINT16 2047 to 4095 volts 2047= 0, 4095= +150 1
9C42 - 9C42 40003 - 40003 Volts B-N UINT16 2047 to 4095 volts volts = 150 * (register - 1
9C43 - 9C43 40004 - 40004 Volts C-N UINT16 2047 to 4095 volts 2047) / 2047 1
9C44 - 9C44 40005 - 40005 Amps A UINT16 0 to 4095 amps 0= -10, 2047= 0, 4095= 1
+10
9C45 - 9C45 40006 - 40006 Amps B UINT16 0 to 4095 amps amps = 10 * (register - 1
9C46 - 9C46 40007 - 40007 Amps C UINT16 0 to 4095 amps 2047) / 2047 1

B–8 EPM 2200 POWER METER – INSTRUCTION MANUAL

APPENDIX B: MODBUS MAPPING FOR EPM 2200 MODBUS REGISTER MAP

Table B–1: Modbus Register Map (Sheet 7 of 7)

Hex Decimal Description1 Format Range6 Units or Comments #
Resolution R
e
g
9C47 - 9C47 40008 - 40008 Watts, 3-Ph total UINT16 0 to 4095 watts 0= -3000, 2047= 0, 4095= 1
+3000
9C48 - 9C48 40009 - 40009 VARs, 3-Ph total UINT16 0 to 4095 VARs watts, VARs, VAs = 1
9C49 - 9C49 40010 - 40010 VAs, 3-Ph total UINT16 2047 to 4095 VAs 3000 * (register - 2047) / 1
9C4A - 9C4A 40011 - 40011 Power Factor, 3-Ph UINT16 1047 to 3047 none 1047= -1, 2047= 0, 3047= 1
total +1 pf =
(register - 2047) / 1000
9C4B - 9C4B 40012 - 40012 Frequency UINT16 0 to 2730 Hz 0= 45 or less, 2047= 60, 1
2730= 65 or more
freq = 45 + ((register /
4095) * 30)
9C4C - 9C4C 40013 - 40013 Volts A-B UINT16 2047 to 4095 volts 2047= 0, 4095= +300 1
9C4D - 9C4D 40014 - 40014 Volts B-C UINT16 2047 to 4095 volts volts = 300 * (register - 1
9C4E - 9C4E 40015 - 40015 Volts C-A UINT16 2047 to 4095 volts 2047) / 2047 1
9C4F - 9C4F 40016 - 40016 CT numerator UINT16 1 to 9999 none CT = numerator * 1
9C50 - 9C50 40017 - 40017 CT multiplier UINT16 1, 10, 100 none multiplier / denominator 1
9C51 - 9C51 40018 - 40018 CT denominator UINT16 1 or 5 none 1
9C52 - 9C52 40019 - 40019 PT numerator UINT16 1 to 9999 none PT = numerator * multiplier 1
9C53 - 9C53 40020 - 40020 PT multiplier UINT16 1, 10, 100 none / denominator 1
9C54 - 9C54 40021 - 40021 PT denominator UINT16 1 to 9999 none 1
9C55 - 9C56 40022 - 40023 W-hours, Positive UINT32 0 to 99999999 Wh per energy * 5 to 8 digits 2
format
9C57 - 9C58 40024 - 40025 W-hours, Negative UINT32 0 to 99999999 Wh per energy * decimal point implied, 2
format per energy format
9C59 - 9C5A 40026 - 40027 VAR-hours, Positive UINT32 0 to 99999999 VARh per energy * resolution of digit before 2
format decimal point = units, kilo,
9C5B - 9C5C 40028 - 40029 VAR-hours, Negative UINT32 0 to 99999999 VARh per energy or mega, per energy 2
format format
9C5D - 9C5E 40030 - 40031 VA-hours UINT32 0 to 99999999 VAh per energy * see note 10 2
format
9C5F - 9C5F 40032 - 40032 Neutral Current UINT16 0 to 4095 amps see Amps A/B/C above 1
9C60 - 9CA2 40033 - 40099 Reserved N/A N/A none 67
9CA3 - 9CA3 40100 - 40100 Reset Energy UINT16 password5 write-only register; always 1
Accumulators reads as 0
Block Size: 100

ASCII characters packed 2 per register in high, low order and without any termination
ASCII characters. For example, "EPM2200" would be 4 registers containing 0x5378, 0x6172,
0x6B31, 0x3030.
SINT16/UINT16 16-bit signed / unsigned integer.
32-bit signed / unsigned integer spanning 2 registers. The lower-addressed register is the
SINT32/UINT32 high order half.
32-bit IEEE floating point number spanning 2 registers. The lower-addressed register is the
FLOAT high order half (i.e., contains the exponent).

All registers not explicitly listed in the table read as 0. Writes to these registers will be
1 accepted but won't actually change the register (since it doesn’t exist).
Meter Data Section items read as 0 until first readings are available or if the meter is not in
2 operating mode. Writes to these registers will be accepted but won't actually change the
register.

EPM 2200 POWER METER – INSTRUCTION MANUAL B–9

MODBUS REGISTER MAP APPENDIX B: MODBUS MAPPING FOR EPM 2200

Register valid only in programmable settings update mode. In other modes these registers
3 read as 0 and return an illegal data address exception if a write is attempted..
Meter command registers always read as 0. They may be written only when the meter is in
4 a suitable mode. The registers return an illegal data address exception if a write is
attempted in an incorrect mode.
If the password is incorrect, a valid response is returned but the command is not executed.
5 Use 5555 for the password if passwords are disabled in the programmable settings.
6 M denotes a 1,000,000 multiplier.
7 Not applicable to EPM 2200
Writing this register causes data to be saved permanently in EEPROM. If there is an error
8 while saving, a slave device failure exception is returned and programmable settings mode
automatically terminates via reset.
Reset commands make no sense if the meter state is LIMP. An illegal function exception will
9 be returned.
10 Energy registers should be reset after a format change.
11 N/A
13 N/A
All 3 voltage angles are measured for Wye and Delta hookups. For 2.5 Element, Vac is
measured and Vab & Vbc are calculated. If a voltage phase is missing, the two voltage
14 angles in which it participates are set to zero. A and C phase current angles are measured
for all hookups. B phase current angle is measured for Wye and is zero for other hookups. If
a voltage phase is missing, its current angle is zero.
If any register in the programmable settings section is set to a value other than the
15 acceptable value then the meter will stay in LIMP mode. Please read the comments section
or the range for each register in programmable settings section for acceptable settings.
16 N/A

B–10 EPM 2200 POWER METER – INSTRUCTION MANUAL

GE
Digital Energy

EPM 2200 Power Meter

Appendix C: Manual Revision

History

Manual Revision History

C.1 Release Notes

Table C–1: Release Dates

MANUAL GE PART NO. RELEASE DATE

GEK-113575 1601-9111-A1 March 2011

GEK-113575A 1601-9111-A2 April 2011

GEK-113575B 1601-9111-A3 August 2015

GEK-113575C 1601-9111-A4 November 2015

Table C–2: Major Updates for 1601-9111-A4

SECT SECT DESCRIPTION

(A2) (A3)

Title Title Manual part number to 1601-9111-A4.

1.2 1.2 Figure 1.2 updated

2.1.1 2.1.1 Section reworded for clarity.

N/A N/A Minor corrections throughout.

EPM 2200 POWER METER – INSTRUCTION MANUAL C–1

RELEASE NOTES APPENDIX C: MANUAL REVISION HISTORY

Table C–3: Major Updates for 1601-9111-A3

SECT SECT DESCRIPTION

(A2) (A3)

Title Title Manual part number to 1601-9111-A3.

2.3 2.3 Updated Compliance section.

4.2 4.2 Updated electrical wiring diagrams.

N/A Ch6 Added communications option B (BACnet) Ch6 and throughout.

N/A N/A Re-organized information, updated formats, and made corrections

throughout.

C–2 EPM 2200 POWER METER – INSTRUCTION MANUAL