Operating Manual

MULTIS Lm55, Lm56

Operating Manual
MULTIS Lm55, Lm56
Programmable Multi-function Digital Panel Meter
Installation & Operating Instructions
Section
1.
2.
3.

Contents
Introduction
Measurement Reading Screens
Programming
3.1 Password Protection
3.2 Menu selection
3.2.1 System Parameter selection screen
3.2.1.1 System type
3.2.1.2 Potential transformer Primary value
3.2.1.3 Potential transformer secondary value
3.2.1.4 Current transformer Primary value
3.2.1.5 Current transformer Secondary value
3.2.1.6 Demand integration time
3.2.1.7 Auto Scrolling
3.2.1.8 Low current noise cutoff
3.2.1.9 Energy Display on modbus
3.2.1.10 Energy Digit reset count.
3.2.2 Communication Parameter selection screen
3.2.2.1 Address Setting
3.2.2.2 RS 485 Baud rate
3.2.2.3 RS 485 Parity selection

4.
5.
6.
7.
8.
9.

3.2.3 Reset Parameter selection screen

3.2.3.1 Resetting Parameter
3.2.4 Output Option selection screen (menu)
3.2.4.1 Configuration of Output
3.2.4.1.1 Relay 1 output selection menu
3.2.4.1.1.1 Pulse output
3.2.4.1.1.1.1 Assignment of Energy to Pulse (Relay 1)
3.2.4.1.1.1.2 Pulse Duration Selection
3.2.4.1.1.1.3 Pulse Rate
3.2.4.1.1.2 Limit output
3.2.4.1.1.2.1 Assignment of Limit Output1 to Parameter
3.2.4.1.1.2.2 Limit Configuration
3.2.4.1.1.2.3 Trip point selection
3.2.4.1.1.2.4 Hysteresis selection
3.2.4.1.1.2.5 Energizing delay time
3.2.4.1.1.2.6 De-energizing delay time
3.2.4.1.2 Relay 2 output selection menu
3.2.4.1.3 Analog output
3.2.4.1.3.1 Parameter setting for Analog Output-1
3.2.4.1.3.2 Parameter setting for Analog Output-2
3.2.5 Quit screen
Phase Rotation Error screen.
Run - Hour.
On - Hour.
Number of Interruption
Analog Output
Relay Output
9.1 Pulse output
9.2 Limit Switch

10.
11.
12.

13.
14.
15.

RS 485 ( ModBus )
10.1 User Assignable Modbus Register
Phaser Diagram
Installation
12.1 EMC Installation Requirements
12.2 Case Dimensions and Panel Cut-out
12.3 Wiring
12.4 Auxiliary Supply
12.5 Fusing
12.6 Earth / Ground Connections
Connection Diagrams
Specification
Connection for Optional Pulse output / RS 485 /Analog Ouput

1. Introduction
The MULTIS Lm5x is a panel mounted 96 x 96mm DIN Quadratic Digital metering system for the
measurement important electrical parameters like AC voltage, AC Current, Frequency, Power,
Energy(Active / Reactive / Apparent) . The instrument integrates accurate measurement
technology (All Voltages & Current measurements are True RMS upto 15th Harmonic) with
3 line 4 digits Ultra high brightness LED display.
MULTIS Lm can be configured and programmed at site for the
following :
PT Primary, PT Secondary, CT Primary, CT Secondary
(5A or1A) and 3 phase 3W or 3 Phase 4W system.
The front panel has two push buttons through which the
user may scroll through the available measurement readings,
reset the energy (Import/Export) Min/Max (System Voltage
and System Current) and configure the product.
Down Key

UpKey

TABLE 1:
Units of measurement

Measured Parameters
System Voltage
System Current
Voltage VL1-N(4wire only)
Voltage VL2-N(4wire only)
Voltage VL3-N(4wire only)
Voltage VL1-L2
Voltage VL2-L3
Voltage VL3-L1
Current L1
Current L2
Current L3
Neutral Current ( 4 wire only )
Frequency
Active Power (System / Phase (4 wire only) )
Reactive Power (System / Phase (4 wire only))
Apparent Power (System / Phase (4 wire only))
Power Factor (System / Phase (4 wire only))
Phase Angle ( Phase(4 wire only))
Active Import Energy (8 Digit resolution)
Active Export Energy (8 Digit resolution)
Reactive Import Energy (8 Digit resolution)
Reactive Export Energy (8 Digit resolution)
Apparent Energy (8 Digit resolution)

Volts
Amps
Volts
Volts
Volts
Volts
Volts
Volts
Amps
Amps
Amps
Amps
Hz
Kwatts
KVAr
KVA
Degree
kWh
kWh
kVArh
kVArh
kVAh

Units of measurement

Measured Parameters
Ampere Hour (8 Digit resolution)
Current Demand
KVA Demand
KW Import Demand
KW Export Demand
Max Current Demand
Max kVA Demand
Max KW Import Demand
Max KW Export Demand
Run Hour
On Hour
Number of Interruptions
Phase Reversal Indication
V1 THD
V2 THD
V3 THD
I1 THD
I2 THD
I3 THD
System Voltage THD
System Current THD

KAh
Amps
KVA
KW
KW
Amps
KVA
KW
KW
Hours
Hours
Counts
%
%
%
%
%
%
%
%

2. Measurement Reading Screens

In normal operation the user is presented with one of the measurement reading screens
out of several screens. These screens may be scrolled through one at a time in incremental
order by pressing the Up key and in decremental order by pressing Down key.
Screen 1 : System screen
(System Voltage, System Current,
System Active Power)

Screen 4 : Line Currents

Screen 2 : Line to
Neutral Voltages
(for 4 wire only)

Screen 5 : Neutral current

( for 4W only ) , Frequency
Sys. Power Factor

Screen 3 : Line to
Line Voltages

Screen 6 : System Power

( Reactive, Apparent, Active)

Screen 7 : Active Energy(Import)

Screen 8 : Active Energy (Export)

Screen 9 : Reactive Energy(Import)

Screen 10 : Reactive Energy(Export)

Screen 11 : Apparent Energy

Screen 12 : Ampere Hour

Screen 13 : Min System Voltage

& Current

Screen 14 : Max System Voltage

& Current

Screen 15 : Phase Power (R)

Reactive/ Apparent /Active ( for 4W only )

Screen 16 : Phase Power (Y)

Reactive/ Apparent /Active (for 4W only)

Screen 17 : Phase Power (B)

Reactive/ Apparent /Active (for 4W only)

Screen 18: Phase Angle

(Phase R / Y / B) (for 4W only)

Screen 19 : Phase Power Factor

(Phase R / Y / B) ( for 4W only )

Screen 20 : Current Demand

Screen 21 : Max Current

Demand

Screen 22 : kVA Demand

Screen 23 : Max kVA

Demand

Screen 24 : Import kW
Demand

10

Screen 25 : Max
Import kWDemand

Screen 26 :Export
kW Demand

Screen 28 :Run Hour

Screen 29 : On Hour

Screen 30: Number

of Interruptions

Screen 31: Correct Phase

sequence

Phase sequence error

Screen 32 :Voltage %THD

(for 4 wire only)

11

Screen 27 :Max Export kW

Demand

(for 3 wire only)

Screen 33: Current %THD

12

Screen 34 : System Voltage &

System Current %THD

13

A
Addr

(Sec 3.2.1.10)

(Energy digit reset count)

Edrc

(Sec 3.2.1.9)

(Energy Output (Display) on

ModBUS)

En.OP

(Sec 3.2.1.8)

(Noise Current Cut-off)

nC

(Sec 3.2.1.7)

(Auto Scrolling)

Auto

(Sec 3.2.1.6)

(Demand Integ.Time )

dit

(Sec 3.2.1.5)

(CT Secondary)

AS

(Sec 3.2.1.4)

(CT Primary )

AP

(Sec 3.2.1.3)

(PT Secondary)

US

(Sec 3.2.1.2)

(PT Primary)

UP

(Sec 3.2.1.1)

SYS

br

(Sec 3.2.2.3)

Pr

(Parity Bits)

(Sec 3.2.2.2)

(Baud Rate)

(Sec 3.2.2.1)

(Modbus Address)

(Sec 3.2.2)

(System Type / Network)

Ser PArA

(Serial Comm.Parameter)

(Sec 3.2.1)

(System Parameter)

SYS PArA

rSEt

Down key .

Select any one option using

none (No Parameter),

ALL (All Parameter),
d (Demand),
E (Energy),
hi (Max values),
Lo (Min values),
hr (Run Hour & On Hour),
Intr (No. of Interrupts)

(Sec 3.2.3)

(Pulse Divisor Rate)

1, 10, 100, 1000
(Sec 3.2.4.1.1.1.3)

rAt

(Sec 3.2.4.1.1.1.2)

60,100,200

dur
(Pulse Duration)

(i-E, E-E, i-rE, E-rE,

A-E, A-H)
(Sec 3.2.4.1.1.1.1)

dE-d

(Sec 3.2.4.1.1.2.6)

(De-energizing Delay time) 1s

to 10s

1s to 10s
(Sec 3.2.4.1.1.2.5)

En-d
(Energizing Delay time)

0.5% to 50%
(Sec 3.2.4.1.1.2.4)

HYS (Hysterisy s)

trip (Trip Point)

10% to 100%
(Sec 3.2.4.1.1.2.3)

(Hi-E, Hi-d,
Lo-E, Lo-d)
(Sec 3.2.4.1.1.2.2)

Limit Config.
Selection

(Sec 3.2.4.1.1.2.1)

Para. Selection
(Acc. To Table)

(Sec 3.2.4.1.1.2)

Para. Selection

Lt
(Limit Output)

(Sec 3.2.4.1.1.1)

(Relay 1 & 2)
(Sec 3.2.4.1.1)

rL1 & rL2

(Sec 3.2.4)

Out PArA

(Output Parameter)

(Analog 2 parameter
selection)
(Acc. To Table )
(Sec 3.2.4.2.3.2)

AnL2

(Sec 3.2.4.1.3.1)

(Analog1 parameter
selection)
(Acc. To Table)

(Sec 3.2.4.1.3)

AnL1

quit

quit

: UP KEY
: DOWN KEY

(Exit Menu)
(Sec 3.2.4)

(Exit Menu)
(Sec 3.2.5)

(Analog Output)

AnL Out

Exit from setup Parameter to Main Display

PUL
(Pulse Output)

codE (PassWord)

(Reset Parameter)

SEL (Select)

MULTIS Lm Setup Parameter Screen

3. Programming
The following sections comprise step by step procedures for configuring the MULTIS for
individual user requirements.
To access the set-up screens press and hold the Down and Up Key simultaneously
for 5 seconds. This will take the User into the Password Protection Entry Stage (Section 3.1).

3.1. Password Protection

Password protection can be enabled to prevent unauthorised access to set-up screens,
by default password protection is not enabled.
Password protection is enabled by selecting a four digit number other than 0000, setting a
password of 0000 disables the password protection.

14

Enter Password, second digit entered, prompt for third

digit.
(* Denotes that decimal point will be flashing).
Use the Down key to scroll the value of the third
digit from 0 through to 9, the value will wrap from 9
round to 0.
Press the Up key to advance to next digit.

Enter Password, third digit entered, prompt for fourth digit.

(* Denotes that decimal point will be flashing).
Use the Down key to scroll the value of the fourth
digit from 0 through to 9, the value will wrap from 9
round to 0.
Press the Up key to advance to verification of the
password.

Enter Password, fourth digit entered, awaiting

verification of the password.

15

Password confirmed.
Pressing Down key will advance to the New /
change Password entry stage.
Pressing the Up key will advance to the Menu selection
screen. (See section 3.2).

Password Incorrect.
The unit has not accepted the Password entered.
Pressing the "
Down" key will return to the Enter
Password stage.
Pressing the Up key exits the Password menu and
returns operation to the measurement reading mode.

New / Change Password

(*Decimal point indicates that this will be flashing).
Pressing the Down key will scroll the value of the
first digit from 0 through to 9, the value will wrap from 9
round to 0.
Pressing the Up key to advance the operation to
the next digit and sets the first digit, in this case to 2

16

New / Change Password, first digit entered, prompting for

second digit. (*Decimal point indicates that this will be
flashing).
Pressing the Down key will scroll the value of the
second digit from 0 through to 9, the value will wrap from
9 round to 0.
Pressing the Up key to advance the operation to the
next digit and sets the second digit, in this case to 1
New / Change Password, second digit entered,
prompting for third digit. (*decimal point indicates that
this will be flashing).
Pressing the Down key will scroll the value of the
third digit from 0 through to 9, the value will wrap from 9
Pressing the Up key to advance the operation to
the next digit and sets the third digit, in this case to 5
New / Change Password, third digit entered, prompting
for fourth digit. (* denotes that decimal point will be
flashing).
Pressing the Down key will scroll the value of the
fourth digit from 0 through to 9, the value will wrap from
9 round to 0.
Pressing the Up key to advance the operation to
the New Password Confirmed and sets the fourth digit,
in this case to 3.

17

New Password confirmed.

Pressing the Down key will return to the New/Change
Password.
Pressing the Up key will advances to the Menu
selection screen.(see section 3.2).

3.2 Menu selection.

3.2.1 System Parameter selection screen.
This screen is used to select the different system
Parameter like system type,CT Ratio,PT Ratio,
Pressing the Up key allows the user to set
Different system parameters.
(see section 3.2.1.1 to 3.2.1.8)
Pressing the down key will advance to
Communication selection screen (see section 3.2.2)

3.2.2 Communication Parameter selection screen.

This screen is used to select the different communication
parameters like Address selection,RS485 Parity selection,
Rs485 baud rate
Pressing the Up key allows the user to set different
Communication parameters
(see section 3.2.2.1 to 3.2.2.3)
Pressing the down key will advance to Reset parameter
Screen. (see section 3.2.3)

18

3.2.3 Reset Parameter selection screen.

This screen is used to Reset the different parameters .
Pressing the Up key allows the user to Reset different
system parameters (see section 3.2.3.1)
Pressing the

down key will advance to Output

Option selection screen (see section 3.2.4).

3.2.4 Output Option selection screen.

This screen will allow the user to select different
Output options Like Relay1,Relay2,Analog Output.
Pressing the Up key allows the user to select &
Configuare the output option (see section 3.2.4.1)
Pressing the down key will advance to Quit screen.
(see section 3.2.5)

3.2.5 Quit screen.

Pressing the Up key will allow the user to Quit from menu
& return to measurement screen.

19

3.2.1 System parameters Selection

3.2.1.1 System Type

This screen is used to set the system type .

System type 3 for 3 phase 3 wire & 4 for 3 phase 4 wire system.
Pressing the
Up key accepts the present
value and advances to the Potential transformer
primary value Edit menu (see section 3.2.1.2)
Pressing the Down key will enter the system type
edit mode and scroll the values through values available .
Pressing the Up key advances to the system
type confirmation menu.

System Type Confirmation

This screen will only appear following the edit of
system type. If system type is to be Downed again,
Pressing the
Up key sets the displayed value and
will advance to Potential Transformer Primary Value
Edit menu. (See section 3.2.1.2)
Pressing the Down key will return to the system type
edit stage by blanking the bottom line of the display

3.2.1.2 Potential Transformer Primary Value

The nominal full scale voltage which will be displayed as the Line to Line voltages for all
system types. The values displayed represent the voltage in kilovolts
(note the x1000 enunciator).

20

Pressing the Up key accepts the present value

and advances to the potential Transformer secondary
Value edit menu. (See Section 3.2.1.3)
Pressing the Down key will enter the Potential
Transformer Primary Value Edit mode.
Initially the multiplier must be selected, pressing the
Down key will move the decimal point position to the
right until it reaches # # # .# after which it will return to #. # # #.
Pressing the Up key accepts the present multiplier (decimal point position) and
advances to the potential Transformer primary Digit Edit mode.
Potential Transformer primary Digit Edit
Pressing the Down key will scroll the value of the most
significant digit from 0 through to 9 unless the presently
displayed Potential Transformer Primary value together with
the Current Transformer Primary Value, previously set,
would result in a maximum power of greater than 666.6
MVA per phase in which case the digit range will be restricted.
Pressing the Up key accepts the present value at the
cursor position and advances the cursor to the next less significant digit.
The PT Primary value can be set from 100V L-L to 692.8 kV L-L.
Note : the flashing decimal point indicates the cursor position, a steady decimal point will
be present to identify the scaling of the number until the cursor position coincides with the
steady decimal point position. At this stage the decimal point will flash.
When the least significant digit has been set pressing the
Potential Transformer Primary Value Confirmation stage.

Up key will advance to the

Screen showing display of 0.120 kV i.e. 120 Volts indicating steady decimal point and cursor
flashing at the hundreds of volts position.

21

Potential Transformer Primary Value Confirmation

This screen will only appear following an edit of the
Potential Transformer Primary Value.
If the scaling is not correct, pressing the
Down key
will return to the Potential Transformer Primary Value Edit
stage.

Note : 0.120 kV i.e. 120 VL-L

Pressing the Up key sets the displayed value and

will advance to the Potential Transformer secondary value
(See Section 3.2.1.3)

3.2.1.3 Potential Transformer secondary Value

The value must be set to the nominal full scale secondary voltage which will be obtained
from the Transformer when the potential transformer(PT)primary is supplied with the voltage
defined in 3.2.1.2 potential transformer primary voltage. The ratio of full scale primary to full
scale secondary is defined as the transformer ratio.
Pressing the Up key accepts the present value and
advances to the Current Transformer Primary Value edit
menu. (See Section 3.2.1.4)
Note that the range of instrument is from 240 to 480V for
415 VL-L. Please refer the table below for different ranges.
Pressing the Down key will enter the Potential
Transformer Secondary Value Edit mode.
Down key will scroll the value of the most significant digit
From available range of PT secondary value
Pressing the Up key accepts the present value at the cursor position and advances
the cursor to the next less significant digit.

22

Potential Transformer secondary ranges for various Input Voltages

110V L-L (63.5V L-N)
230V L-L (133.0V L-N)
415V L-L (239.6V L-N)

100 - 120V L-L (57.73V - 69.28V L-N)

121 - 239V L-L (69.86V - 138V L-N)
240 - 480V L-L (138.56V - 277.12V L-N)

Note : the flashing decimal point indicates the cursor position, a steady decimal point will
be present to identify the scaling of the number until the cursor position coincides with the
steady decimal point position. At this stage the decimal point will flash.
When the least significant digit has been set pressing the Up key will advance to the
Potential Transformer secondary Value Confirmation stage.
Potential Transformer Secondary Value Confirmation
This screen will only appear following an edit of the
Potential Transformer Secondary Value.
If the scaling is not correct, pressing the
Down
key will return to the Potential Transformer Secondary
Value Edit
Pressing the

Up key sets the displayed value

and will advance to the current Transformer Primary Value (See Section 3.2.1.4)

3.2.1.4 Current Transformer Primary Value

The nominal Full Scale Current that will be displayed as the Line currents. This screen
enables the user to display the Line currents inclusive of any transformer ratios, the values
displayed represent the Current in Amps.
Pressing the Up key accepts the present value and advances to the Current Transformer
Secondary Value (See Section 3.2.1.5)

23

Pressing the
Down key will enter the Current
Transformer Primary Value Edit mode. This will scroll the
value of the most significant digit from 0 through to 9,
unless the presently displayed Current Transformer
Primary Value together with the Potential Transformer
Primary Value results in a maximum power of greater
than 666.6 MVA in which case the digit range will be
restricted, the value will wrap. Example: If primary value
of PT is set as 692.8kV L-L (max value) then primary value of Current is restricted to 1157A.
Pressing the Up key will advance to the next less significant digit. (* Denotes that
decimal point will be flashing).
The Maximum Power restriction of 666.6 MVA refers to 120% of nominal current and
120% of nominal voltage, i.e, 462.96 MVA nominal power per phase.
When the least significant digit had been set, pressing the
Current Transformer Primary Value Confirmation stage.

Up key will advance to the

The minimum value allowed is 1, the value will be forced to 1 if the display contains zero
when the Up key is pressed.
Current Transformer Primary Value Confirmation.
This screen will only appear following an edit of the Current
Transformer
Primary Value
.
If the scaling is not correct, Pressing the
Down key
will return to the Current Transformer Primary Value Edit
stage with the most significant digit highlighted (associated
decimal point flashing) and the bottom line of the display
will be blanked.
Pressing the Up key sets the displayed value and will advance to the Current
Transformer Secondary Value Edit menu. (See Section 3.2.1.5)

24

3.2.1.5 Current Transformer Secondary Value

Pressing the

This screen is used to set the secondary value for Current

Transformer. Secondary value 5 for 5A or 1 for 1A can
be selected. Pressing Up key accepts the present
value and advances to the Demand integration Time
(See Section 3.2.1.6)
Pressing the
Down key will enter the CT Secondary
value edit mode and scroll the value through the values
available.
Up key will advance to the CT Secondary value confirmation.
CT Secondary value confirmation
This screen will only appears following an edit of CT
secondary value .
If secondary value shown is not correct, pressing the
Down key will return to CT secondary edit stage by
blanking the bottom line of the display.
Pressing Up key sets the displayed value and will
advance to Demand integration Time Edit menu.
(See Section 3.2.1.6)

3.2.1.6 Demand Integration Time

This screen is used to set the period over which current and
power readings are to be integrated The Unit of displayed
Readings is minutes.
Down key will scroll through the
.Pressing the
Folliowing Options 8,15,20,30.
Pressing the
Up key will advance to Demand
Integration confirmation screen.

25

Demand Integration Time value confirmation

Pressing Up key sets the displayed value and will
advance to scroll screen.
(See Section 3.2.1.7)

3.2.1.7 Auto Scrolling :

This screen allows user to enable screen scrolling.
Auto scrolling Edit.
Pressing Up key accepts the present status and
advance to the Low Current noise cutoff
(See Section 3.2.1.8).

Pressing the
Down key will enter the Auto Screen
Scrolling Edit and toggle the status Yes and No.
Pressing the Up key will select the status displayed
and advance to the Low Current noise cutoff
(See Section 3.2.1.8)

26

3.2.1.8 Low Current noise cutoff.

This screen allows the user to set Low noise current cutoff in mA.
Low current cutoff Edit.
.Pressing Up key accepts the present value and
advance to Energy output Selection.
(See section 3.2.1.9)
Pressing the
Down key will enter the Low current
noise cutoff Edit mode and scroll the Value through 0 & 30
and wrapping back to 0. Setting 30 will display measured
currents as 0 below 30 mA.
Low current noise cutoff Confirmation.
pressing the Down key will re-enter the Low current
Noise cutoff Edit mode.
Pressing Up key set displayed value and Advance to
the energy output selection
(See section 3.2.1.9)

3.2.1.9. Energy Display on modbus

This screen enable user to set energy in terms of Wh / KWh / MWh on RS 485 Output
depending as per the requirement .Same applicable for all types of energy.
Pressing Up key accepts the presents value and
advances to the Energy digit reset countmenu
(See section 3.2.1.10).
Pressing the Down key will enter the Energy Display
On Modbus Edit mode and scroll the value through the values
1,2 & 3 wrapping back to 1
1 : Energy In Wh 2 : Energy in KWh 3: Energy in MWh
Pressing the Up key advances to the Energy Display
On Modbus Confirmation menu.
27

Energy Display On Modbus Confirmation.

This screen will only appear following an edit of the Energy
Display On Modbus.
Pressing the
Down key will enter the Energy Display
On Modbus Edit Edit stage by blanking the bottom line of
the display.
Pressing Up key sets the displayed value and will
advance to the Energy digit reset count menu.
(See section 3.2.1.10)
Note : Default value is set to 1 i.e. Energy on Modbus will be in terms of
Wh/VArh/VAh/Ah resp.

3.2.1.10 Energy Digit reset count :

This screen enables user for setting maximum energy
count after which energy will rollback to zero depends upon
setting of Wh,KWh, & MWh.
Pressing the Up key sets the displayed value and will jump
back to the system parameter selection (See Section 3.2.1)
Pressing the
Down key will enter the Energy digit
reset count edit mode. This will scroll the value of reset
count from 7 to 14 for Wh,from 7 to 12 for KWh & from
7 to 9 for MWh.
Ex. If energy display on modbus is set Wh & It will set Energy digit count to 10 then energy
will reset after 9,999,999,999 & then will rollback to zero.
Pressing Up key will advance to Energy digit reset count confirmation screen.
Pressing the
Down key will re-enter Energy digit reset count edit mode.
Pressing the Up key sets the displayed value and will jump back to the system
parameter selection (See Section 3.2.1)

28

Note : 1) Default value is set to 14 i.e if energy count crosses 14 digit it will rollback to zero.
2) Energy displays on modbus is set to (2) & energy digit reset count is set to 12.Energy
screen on display will show ------- i.e Energy overflow .when energy crosses the 11 digit count.
3) Energy displays on modbus is set to (3) & energy digit reset count is set to 9.Energy screen
on display will show ------- i.e Energy overflow .when energy crosses the 8 digit count.

3.2.2 Communication Parameter Selection :

3.2.2.1 Address Setting : This screen applies to the RS 485 output only. This screen
allows the user to set Rs485 parameter for instruments
The range of allowable address is 1 to 247 .
Enter Address, prompt for first digit.
(* Denotes that decimal point will be flashing).
Press the Down key to scroll the value of the first digit
Press the

Up key to advance to next digit.

Enter Address, first digit entered, prompt for second digit

(* Denotes that decimal point will be flashing).
Use the
Press the

Down key to scroll the value of the second digit

Up key to advance to next digit.

29

Enter Address, second digit entered, prompt for third digit

(* Denotes that decimal point will be flashing).
Use the

Down key to scroll the value of the third digit

Address confirmation Screen.

This Screen confirms the Address set by user .
Press the Up key to advance to next Screen
Rs485 Baud Rate (See Section 3.2.2.2)
Pressing the
Edit mode.

Down key will reenter the Address

3.2.2.2 RS 485 Baud Rate :

This screen allows the user to set Baud Rate of RS 485 port.
The values displayed on screen are in kbaud ..
Pressing Up key accepts the present value and
advance to the Parity Selection (See Section 3.2.2.3)
Pressing the
Down key will enter the Baud Rate
Edit mode and scroll the value through 2.4, 4.8, 9.6 , 19.2
and back to 2.4

30

RS 485 Baud Rate confirmation :

Pressing
Down key will be re-enter into the.
Baud Rate Edit mode
Pressing the Up key will select the value and advances
to the Parity Selection (See Section 3.2.2.3).

3.2.2.3 RS 485 Parity Selection :

This screen allows the user to set Parity & number of stop bits of RS 485 port.
Pressing Up key accepts the present value and
advance to Menu selection (see section 3.2).
Pressing the
Down key will enter the Parity & stop bit
Edit mode and scroll the value through
odd : odd parity with one stop bit
no 1 : no parity with one stop bit
no 2 : no parity with two stop bit
E : even parity with one stop bit
RS 485 Parity confirmation :
Pressing

Down key will be re-enter into Parity Edit mode .

Pressing the

Up key will set the value.

Pressing the Up key again will jump back to the

communication parameter selection menu
(see section 3.2.2).

31

3.2.3 Reset Parameter Selection :

3.2.3.1 Resetting Parameter
The following screens allow the users to reset the all Energy , Lo(Min), hi(Max),Demand,
Run hour, .On hour, No.of Interrupts
Reset (None)
Pressing Up key advances to Reset Parameter
selection screen (see section 3.2.3)
Pressing the Down key will enter the Reset option
mode and scroll through Parameter and wrapping back
to None.

Reset option select, (Resets ALL resettable parameter)

The user has scrolled through to the ALL .
Pressing Up key will select the value and advance to
the Reset ALL Confirmation Mode &. Will reset all
resettable parameter.

Reset ALL Confirmation.

Pressing the
Select mode.

Down key will re-enter the Reset option

Pressing Up key will jump back to the Reset

Parameter selection screen (see section 3.2.3).

32

Reset option select, (Reset A Demand, KVA Demand

Parameters KW demand (Import/Export))
The user has scrolled through to the d .
Pressing Up key will select the value and
advance to the Reset d Confirmation Mode & resets all
Demand parameters.

Reset Demand parameters Confirmation.

Pressing the
Select mode.

Down key will re-enter the Reset option

Pressing Up key will jump back to the Reset

Parameter selection screen (see section 3.2.3).

Reset option select, (Resets all Energies)

The user has scrolled through to the E Energy value.
Pressing Up key will select the value and advance to
the Reset Energy Confirmation Mode.
& resets all Energies (Import Enegy, Export Energy Import
reactive, Export reactive, Apparent Energy Ampere Hour)

33

Reset Energy Confirmation.

Pressing the
option mode.

Down key will re-enter the Reset

Pressing Up key will jump back to the

Reset Parameter selection screen (see section 3.2.3).

Reset option select, (Reset Hi)

The user has scrolled through to the Hi (Max)
Pressing Up key will select the value and advance to
the Reset Hi Confirmation Mode.
Will reset Maximum (Hi) values of Voltage & Current Avg.
appeared at input.

Reset hI (Max) Confirmation.

Pressing the
Select mode.

Down key will re-enter the Reset option

Pressing Up key will jump back to the Reset

Parameter selection screen (see section 3.2.3).

34

Reset option select, (Reset Lo)

The user has scrolled through to the Lo (Min)
Pressing Up key will select the value and advance to
the Reset Lo Confirmation Mode & Will reset minimum
values of Voltage & Current Avg. appeared at Input.

Reset Lo Confirmation
Pressing the Down key will re-enter the Reset option
Select mode.
Pressing Up key will jump back to the
Reset Parameter selection screen (see section 3.2.3).

Reset option select, hr (ON Hour & Run Hour)

The user has scrolled through to the hr
Pressing Up key will select the value and advance to
the Reset hr Confirmation Mode & Will reset On hour &
Run Hour both.

35

Reset hr Confirmation
Pressing the Down key will re-enter the Reset option
Select mode.
Pressing Up key will jump back to the Reset
Parameter selection screen (see section 3.2.3).

Reset option select, (Reset Number of Interrupt)

The user has scrolled through to the intr
Pressing Up key will select the value and advance to
the reset Interrupt Confirmation Mode & Will reset number
of Auxiliary supply interruption count.

Reset Interrupt Confirmation

Pressing the Down key will re-enter the Reset
parameter Selection(see section 3.2.3).
Pressing Up key will jump back to the Reset
Parameter selection screen (see section 3.2.3).

36

3.2.4. Output Option selection menu

3.2.4.1 Configuration of Output
This screen applies to the Relay1 Output option Selection .
Pressing Up key will select the
Relay1 output selection menu(See section 3.2.4.1.1)
pressing the Down key will advance
Relay2 output option below.

This screen applies to the Relay2 Output option Selection .

Pressing Up key will advance to the select
Relay 2 output selection menu. (See section 3.2.4.1.2)
pressing the Down key will advance to
Analog output option below.

This screen applies to the Analog Output Selection.

Pressing Up key will Select the Analog output
selection menu (See section 3.2.4.3)
Pressing the

37

Down key will advance to Quit screen.

This screen allows the user to quit the output option

Pressing Up key will advance to the
Output Parameter selection (See section 3.2.4)
Pressing the Down key will go back to
Relay1 output option (See section 3.2.4.1).

3.2.4.1.1 Relay1 output Selection menu :

3.2.4.1.1.1 Pulse output :
This screen is used to assign Relay1 in Pulse output mode
Pressing Up key will advance to the Pulse (for Relay1)
output configuration
(See section 3.2.4.1.1.1.1)
Pressing Down key will show Limitoutput option
(See section 3.2.4.1.1.2)

3.2.4.1.1.2 Limit output :

This screen is used to assign Relay1 in limit output mode.
Pressing Up key will assign
Limit (for Relay1) output mode.(See section 3.2.4.1.1.2.1)
Pressing Down key wil go back to the pulse option
(For Relay 1) screen.(See section 3.2.4.1.1.1)

38

3.2.4.1.1.1.1 Assignment of Energy to pulse output (Relay 1) :

This screen allows the user to assign pulse output to energy (for Relay 1)
Pressing Up key accepts the present setting
and advance to Pulse duration selection
(see section 3.2.4.1.1.1.2).
Pressing the
Down key will enter into edit mode
and scroll through the energy setting
A - E : Apparent Energy
I - rE : Import Reactive Energy
I - E : Import Energy ( Active ) E - rE : Export Reactive Energy
E - E : Export Energy ( Active ) A - H : Ampere Hour
Pulse output (for Relay 1) confirmation :
Pressing

Down key will be re-enter into edit mode .

Pressing the Up key will set the value and advances

to the Pulse duration selection (see section 3.2.4.1.1.1.2).

3.2.4.1.1.1.2 Pulse Duration Selection:

This screen applies only to the Pulsed output mode of both the relay. This screen allows
the user to set Relay energisation time in milliseconds.
Pulse Duration Edit.
Pressing Up key accepts the present value and advance
to pulse rate selection menu (see section 3.2.4.1.1.1.3).
Pressing the
Down key will enter the Pulse Duration
Edit mode and scroll the value through 60, 100, 200 and
wrapping back to 60.
Pressing the Up key will select the value and advances
to Pulse Duration Confirmation.

39

Pulse Duration Confirmation.

This screen will only appear following an edit of the
Pulse duration.
pressing the Down key will re-enter the Pulse
Duration Edit mode.
Pressing Up key set displayed value and Will advance
to pulse rate selection menu
(See section 3.2.4.1.1.1.3)

3.2.4.1.1.1.3 Pulse Rate

This screen applies to the Relay Output option only. The screen allows user to set the energy
pulse rate divisor. Divisor values can be selected through 1,10,100,1000 in Wh.
Pressing Up key accepts the presents value and
advances to the Configuration of Output
(See section 3.2.4.1).
Pressing the Down key will enter the Pulse rate divisor
Edit mode and scroll the value through the values 1,10,100,
1000 wrapping back to 1 in Wh but in KWh & MWh pulse rate
divisor is only 1 ..
Pressing the Up key advances to the Pulse rate
Divisor Confirmation menu. For setting divisior value refer table 3.
Pulse Rate Divisor Confirmation.
This screen will only appear following an edit of the Pulse
rate divisor.
If the Pulse rate shown is not correct, pressing the Down
key will return to the Pulse rate divisor Edit stage by
blanking the bottom line of the Pressing Up key sets
the displayed value and will advance to the Configuration
of output.(See section 3.2.4.1)

40

3.2.4.1.1.2.1 Assignment of Limit output (for Relay1) to parameter.

This screen is for Limit output mode selection. It allows the user to set Limit output corresponding
measured value . Refer Table 2 Parameter for Analog & Limit output for assignment.
Pressing Up key accepts the present value and
advance to the Limit1 configuration select screen.
(see section 3.2.4.1.1.2.2 ).
Pressing the
Down key will enter the Limit1 output
Edit mode and scroll the values, as per Table 2,
Parameter for Analog & Limit Output
Pressing the Up key advance to the Limit1 output
confirmation screen .
Limit1 output Confirmation :
Pressing the
Down key will re-enter the Limit1
output Edit

Pressing the Up key sets the displayed value and will

advance to the Limit1 Configuration select screen
( see section 3.2.4.1.1.2.2 )

3.2.4.1.1.2.2 Limit1 Configuration select

This screen is used to set the Limit1 Configuration, four

different types of configuration can be selected
H i - E (High Alarm & Energized Relay)
H i - d (High Alarm & De-Energized Relay)
L o - E (Low Alarm & Energized Relay)
L o - d (Low Alarm & De-Energized Relay)
(For detail refer to section 9.2)

41

Pressing the Up key accepts the present value and advances to the Trip point
selectionscreen (see section 3.2.4.1.1.2.3)
Pressing the Down key will enter the Limit1 configuration edit mode and scroll through
the Modes available .
Pressing the Up key advances to the Limit1 configuration type confirmation menu.

Limit1 Configuration Confirmation

This screen will only appear following the edit of system
type. If system type is to be changed again,
pressing the Down key will return to the Limit1configuration
Type edit stage by blanking the bottom line of the display
Pressing the
Up key sets the displayed value and
will advance to Trip point selection Screen
(See section 3.2.4.1.1.2.3 )

3.2.4.1.1.2.3 Trip point selection :

This screen applies to the Trip point selection.
This screen allows the user to set Trip point for instruments
The allowable range is 10% to 120% for High Alarm .
The allowable range is 10% to 100% for Low Alarm .
Enter value, prompt for first digit.
(* Denotes that decimal point will be flashing).
Press the

Down key to scroll the values of the first digit

Press the

Up key to advance to next digit.

42

The first digit entered, prompt for second digit

(* Denotes that decimal point will be flashing).
Use the
Press the

Down key to scroll the value of the second digit

Up key to advance to next digit.

The second digit entered, prompt for third digit

(* Denotes that decimal point will be flashing).
Use the

Down key to scroll the value of the third digit

Entered the value for third digit .

Press the
Screen.

Up key to advance to trip point confirmation

43

Value confirmation Screen.

This Screen confirms the value set by user .
Press the

Up key to advance to next Screen

Hysteresis selection ( see section 3.2.4.1.1.2.4)

Pressing the

Down key will return in edit mode

3.2.4.1.1.2.4 Hysteresis selection :

This screen applies to the Hysteresis selection.

This screen allows the user to set Hysteresis for relay1 output
The allowable range is 0.5% to 50 % of Trip point .
Enter value, prompt for first digit.
(* Denotes that decimal point will be flashing).
Press the
Press the

Down key to scroll the value of the first digit.

Up key to advance to next digit.

The first digit entered, prompt for second digit (* Denotes

that decimal point will be flashing).
Use the
digit
Press the

Down key to scroll the value of the second

Up key to advance to next digit.

44

The second digit entered, prompt for third digit

(* Denotes that decimal point will be flashing).
Use the

Down key to scroll the value of the third digit

Entered value for third digit .

Press the Up key to advance to Hysteresis
confirmation Screen.

Hysteresis confirmation Screen.

This Screen confirms the percentage value set by user .
& Screen will appear only after edit mode of Hysteresis.
Press the

Up key to advance to next Screen

Energizing delay time ( 3.2.4.1.1.2.5 )

45

3.2.4.1.1.2.5 Energizing Delay time.

This screen allows the user to set Energizing Delay time for Relay 1 Limit Assigned Parameters .
Pressing Up key accepts the present value and
advance to De-energizing delay screen
.
Pressing the
Down key will enter the Energizing
Delay Edit mode and scroll the Value through 1 to10

Energizing delay time Confirmation.

This screen will appear only after edit mode of Energizing
delay time
pressing the Down key will re-enter the Energizing
delay Edit mode.
Pressing Up key set displayed value and
will advance to Assignment of De-energizing delay time.
(See section 3.2.4.1.1.2.6 )

3.2.4.1.1.2.6 De-Energizing Delay time.

This screen allows the user to set De-Energizing Delay time for Relay 1 Limit Assigned Parameters .
Pressing Up key accepts the present value and
advance to Configuration of Output.
(See section 3.2.4.1 )
Pressing the
Down key will enter the De-Energizing
Delay Edit mode and scroll the Value through 1 to10

46

De-Energizing delay time Confirmation.

This screen will appear only after edit mode of De-energizing
delay time.
pressing the Down key will re-enter the De-energizing
delay Edit mode.
Pressing Up key set displayed value and will advance
to Configuration of Output. (See section 3.2.4.1 )

3.2.4.1.2 Relay 2 Output Selection :

Configuration of Relay 2 for Pulse or Limit Output is same as Relay 1. If you Select the
Pulse output option for Relay 1 same setting will be applicable for Relay 2 except
assignment of energy to Pulse output (i.e. Energy assignment of both relay can be different.)

3.2.4.1.3 Analog Output

3.2.4.1.3.1 Parameter setting for Analog Output 1 ( Optional )
This screen is for analog output 1 only . It allows the user to set analog output 1 to
corresponding measured parameter . Refer table2 Parameter for Analog & Limit output .
Pressing Up key accepts the present value and
advance to the Analog output 2 selection
(see section 3.2.4.1.3.2 ).
Pressing the
Down key will enter the Analog output
1 Edit mode and scroll the values, as per Table 2
Parameter for Analog & Limit output
Pressing the Up key advance to the Analog output 1
confirmation screen .

47

Analog output 1 Confirmation :

This Screen will appear only after edit mode of Analog
output 1 Parameter.
Pressing the
Down key will re-enter the Analog
output 1 Edit
Pressing the Up key sets the displayed value and will
advance to the Analog output 2 selection screen
( see section 3.2.4.1.3.2 )

3.2.4.1.3.2 Parameter setting Analog Output 2 ( Optional )

This screen is for analog output 2 only . It allows the user to set analog output 2 to
corresponding measured parameter . Refer table2 Parameter for Analog & Limit output .
Pressing Up key accepts the present value and
advance to Analog output selection screen
(see section 3.2.4.1 ).
Pressing the
Down key will enter the Analog output
2 Edit mode and scroll the values, as per Table 2.
Parameter for Analog output
Pressing the Up key advance to the Analog output 2
confirmation screen .
Analog output 2 Confirmation :
This Screen will appear only after edit mode of Analog
output 2 Parameter.
Pressing the
Down key will re-enter the Analog
output 2 Edit
Pressing the Up key sets the displayed value and will
advance to the Analog output selection screen
(see section 3.2.4.1 ).

48

4.Phase Rotation Error screen :

Meter shows phase rotation error if the phase sequence R-Y-B (L1-L2-L3) is not maintained
This screen indicates that Phase sequence is incorrect.
User must check this screen in order to get correct readings
When meter is connected.

Correct Phase sequence :

This Screen indicates the phase sequence connected to
meter is correct. If phase sequence is wrong this screen is
useful to get correct phase sequence by interchanging
connection & verifying it with screen.

This Screen indicates that all three phases (Voltages)

are absent.

49

5. Run Hour
This Screen shows the total no. of hours the load is
connected Even if the Auxiliary supply is interrupted count
of Run hour will be maintained in internal memory &
displayed in the format hours. min. For example if
Displayed count is 105000.10 r-H it indicates 105000 hours
& 10 minutes. After 999999.59 run hours display will
restart from zero. To reset run hour manually see section
Resetting Parameter 3.2.3.1

6. On Hour
This Screen shows the total no. of hours the Axillary Supply
is ON. Even if the Auxiliary supply is interrupted count of
On hour will be maintained in internal memory & displayed
in the format hours. min. For example if Displayed count
is 005000.10 On-H it indicates 005000 hours & 10 minutes.
After 999999.59 On hours display will restart from zero.
To reset On hour manually see section Resetting
Parameter 3.2.3.1

7. Number of Interruption :
This Screen Displays the total no. of times the Axillary
Supply was Interrupted. Even if the Auxiliary supply is
interrupted count will be maintained in internal memory
To reset No of Interruption manually see section
Resetting Parameter 3.2.3.1

50

8. Analog Output ( optional ) :

This module provides two d.c. isolated outputs .There are two output options
1) Two 0 - 1mA outputs , internally powered .
2) Two 4 - 20mA outputs , internally powered .
The 0 -1mA output module has an 0V return on each end of the 4 way connector
( Please refer section 15 for connection details )
On both modules the output signals are present on pins A1(Anolog Output 1) &
A2 (Analog Output 2)
These outputs can be individually assigned to represent any one of the measured and
displayed Parameters.
All settlings are user configurable via the user interface screen. See Analog o/p selection
( section 3.2.4.1.3 ) for details .
* Note : Refer diagrams 1 & 2

Diagram 2 : ( 0 - 1 mA )

Diagram 1 : ( 4 -20 mA )
0

0 (12mA)

00 (0.5mA)

90 (16mA)

270 (8mA)

900 (8mA)

2700 (0.25mA)

1810 (1mA)

181 (4mA)

1800 (1mA)

180 (20mA)

51

8. Analog Output ( optional ) :

TABLE 2 : Parameter for Analog & Limit output
Parameter No.

Parameter

None

Volts 1

Volts 2

Volts 3

IL1

IL2

IL3

W1

W2

W3

10

VA1

11

VA2

12

VA3

13

VAr1

14

VAr2

15

VAr3

16

* PF1

17

* PF2

18

* PF3

19

* PA1

3P 4W

3P 3W

Range

0 - 100 %

0 - 100 %

0 - 100 %

0 - 100 %

0 - 100 %

0 - 100 %

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

0 - 120 %
X

X
180 / 0 / -180

X
180 / 0 / -180

X
180 / 0 / -180

X
180 / 0 / -180

52

Parameter No.
20

Parameter

3P 4W

21

* PA3

22

Volts Ave.

24

Current Ave.

27

Watts sum

29

VA sum

31

VAr sum

32

* PF Ave.

34
36

* PA Ave.
Freq.

43

Watt Demand Imp.

44

Watt Max Demand Imp.

45

Watt Demand Exp

46

Watt Demand Max Exp

51

VA Demand

52

VA Max Demand.

53

Current Demand.

54

Current Max Demand.

101

VRY

102

VYB

103

VBR

113

I Neutral

3P 3W

Range

X
180 / 0 / -180

X
180 / 0 / -180

0 - 100 %

0 - 100 %

0 - 120 %

0 - 120 %

0 - 120 %

180 / 0 / -180

180 / 0 / -180

45 to 66 Hz

0 - 120 %

0 - 120 %

0 - 120 %

0 - 120 %

0 - 120 %

0 - 120 %

0 - 100 %

0 - 100 %

0 - 100 %
X

0 - 100 %
X

0 - 100 %
X

0 - 100 %
X

* PA2

53

Note : Parameters 1,2,3 are L-N Voltage for 3P 4W & L-L Voltage for 3P 3W .

9. Relay output (Optional) :

MULTIS is provided with either 1 or 2 relay for pulse output as well as for limit switch

9.1 Pulse Output :

Pulse output is the potential free, very fast acting relay contact which can be used to drive
an external mechanical counter for energy measurement.
Multifunction Meter pulse output can be configured to any of the following parameter
through setup parameter screen
4) Reactive Energy (Export)
1) Active Energy (Import)
5) Apparent Energy
2) Active Energy (Export)
3) Reactive Energy (Import) 6) Ampere hour

TABLE 3 : Energy Pulse Rate Divisor

1.For Energy Output in Wh

Pulse rate
Pulse
System Power*
1per Whr
Up to 3600W
1per kWhr
Up to 3600kW
Above 3600kW
1per MWhr
1per 10Whr
Up to 3600W
1per 10kWhr Up to 3600kW
1per 10MWhr Above 3600kW
1per 100Whr
Up to 3600W
1per 100kWhr Up to 3600kW
1per 100MWhr Above 3600kW
1 per 1000Whr Up to 3600W
1 per 1000kWhr Up to 3600kW
1per 1000MWhr Above 3600kW

Divisor
1

10

100

1000

Pulse Duration 60 ms,100 ms or 200 ms

54

2. For Energy Output in KWh

3. For Energy Output in MWh

Pulse rate
Divisor Pulse
System Power*
1 per KWhr
1
Up to 3600W
1 per 1000KWhr Up to 3600kW
1per 1000MWhr Above 3600kW

Pulse rate
Divisor Pulse
System Power*
1per MWhr
1
Up to 3600W
1per 1000MWhr Up to 3600kW
1per 1000GWhr Above 3600kW

Above options are also applicable for Apparent and Reactive Energy.
* System power = 3 x CT(Primary) x PT(Primary)L-N for 3 Phase 4 Wire
System power = Root3 x CT(Primary) x PT(Primary)L-L for 3 Phase 3 Wire
Ampere Hour:
Divisor 1(Default)
CT secondary = 1A Max pulse rate 3600 pulses per Ah **
CT secondary = 5A Max pulse rate 720 pulses per Ah **
Divisors 10
CT secondary = 1A Max pulse rate 3600 pulses per 10Ah **
CT secondary = 5A Max pulse rate 720 pulses per 10Ah **
Divisors 100
CT secondary = 1A Max pulse rate 3600 pulses per 100Ah **
CT secondary = 5A Max pulse rate 720 pulses per 100Ah **
Divisors 1000
CT secondary = 1A Max pulse rate 3600 pulses per 1000Ah **
CT secondary = 5A Max pulse rate 720 pulses per 1000Ah **
Pulse duration 60 ms, 100 ms or 200 ms
**No. of Pulses per Ampere hour = Maximum Pulses / CT Ratio
Where, CT Ratio = (CT primary/ CT Secondary)

55

9.2 Limit Switch :

Limit switch can be used to monitor the measured parameter ( Ref.Table:2 )in relation
with to a set limit.
The limit switch can be configured in one of the four mode given below:1) Hi alarm & Relay Energized Relay..
2) Hi alarm & De-Energized Relay.
3) Lo alarm & Energized Relay.
4) Lo alarm & De-Energized Relay.
With User selectable Trip point, Hysteresis, Energizing Delay & De-Energizing delay.

Hi Alarm:
If Hi-Alarm Energized or Hi Alarm De-Energized option is selected then relay will get
energized or De-energized,if selected parameter is greater than or equal to trip point.

Lo Alarm:
If Lo-Alarm Energized or Lo Alarm De-Energized option is selected then relay will get
energized or De-energized,if selected parameter is less than or equal to trip point.

Trip point:
Trip point can be set in the range of 10% to 120 % of nominal value for Hi-Alarm & 10%
to 100 % of nominal value for Lo-Alarm.

Hysteresis:
Hysteresis can be set in the range of 0.05% to 50 % of set trip point .
If Hi-alarm Energized or Hi-alarm De-energized is selected then relay will get
De-energized or Energized respectively, if set parameter value is less than Hysteresis
Similarly if Lo-alarm Energized or Lo-alarm De-Energized.

Energizing Delay:
The energizing delay can be set in the range from1 to 10 sec.

De-Energizing Delay:
The De-energizing delay can be set in the range from1 to 10 sec.
Note : In case of lo alarm if trip point is set at 100% then maximum 20% Hysterisis can be set..

56

10. RS 485 ( ModBus ) Output :

MULTIS supports MODBUS (RS485) RTU protocol( 2-wire ) .
Connection should be made using twisted pair shielded cable. All "A" and "B" connections
are daisy chained together. The screens should also be connected to the Gnd terminal.
To avoid the possibility of loop currents, an Earth connection should be made at one point

57

on the network.Loop (ring) topology does not require any termination load. Line topology
may or may not require terminating loads depending on the type and length of cable used.
The impedance of the termination load should match the impedance of the cable and be at
both ends of the line. The cable should be terminated at each end with a 120 ohm
(1/4 Watt min.) resistor.
RS 485 network supports maximum length of 1.2km. Including the Master, a maximum
of 32 instruments can be connected in Rs485 network.The permissible address range for
MULTIS is between 1 and 247 for 32 instruments. Broadcast Mode (address 0) is not allowed.
The maximum latency time of an MULTIS is 200ms i.e. this is the amount of time that can
pass before the first response character is output.
After sending any query through software ( of the Meter) , it must allow 200ms of time to
elapse before assuming that the MULTIS is not going to respond. If slave does not respond
within 200 ms, Master can ignore the previous query and can issue fresh query to the slave.
The each byte in RTU mode has following format:
8-bit binary, hexadecimal 0-9, A-F
2 hexadecimal characters contained in each 8-bit field of
the message
Format of Data Bytes

4 bytes (32 bits) per parameter.

Floating point format ( to IEEE 754)
Most significant byte first (Alternative least significant byte first)

Error Checking Bytes

2 byte Cyclical Redundancy Check (CRC)

Byte format

1 start bit,
8 data bits, least significant bit sent first
1 bit for even/odd parity
1 stop bit if parity is used; 1 or 2 bits if no parity

Communication Baud Rate is user selectable from the front panel between
2400, 4800, 9600, 19200 bps.

58

Function code :
03

Read Holding Registers

Read content of read /write location ( 4X )

04

Read input Registers

Read content of read only location ( 3X )

16

Presets Multiple Registers

Set the content of read / write locations ( 4X )

Exception Cases : An exception code will be generated when MULTIS receives ModBus
query with valid parity & error check but which contains some other error ( e.g. Attempt to
set floating point variable to an invalid value ) The response generated will be Function
code ORed with HEX (80H ). The exception codes are listed below
01

Illegal function

The function code is not supported by MULTIS

02

Illegal Data
Address

Attempt to access an invalid address or an attempt to read

or write part of a floating point value

03

Illegal Data
Value

Attempt to set a floating point variable to an invalid value

Accessing 3 X register for reading measured values:

Two consecutive 16 bit registers represent one parameter. Refer table 4 for the addresses
of 3X registers (Parameters measured by the instruments).
Each parameter is held in the 3X registers. Modbus Code 04 is used to access all parameters.
Example :
To read parameter ,
Volts 3 : Start address= 04 (Hex)

Number of registers = 02

Note : Number of registers = Number of parameters x 2

Each Query for reading the data must be restricted to 20 parameters or less. Exceeding
the 20 parameterlimit will cause a ModBus exception code to be returned.

59

Query :
01 (Hex)

04 (Hex)

Device
Address

Function
Code

00 (Hex)

04(Hex)

00 (Hex)

02(Hex)

30 (Hex)

0A (Hex)

CRC
Low

CRC
High

Start Address Start Address Number of Number of

Registers Hi Registers Lo
High
Low

Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Response: Volt3 (219.25V)
01 (Hex)

04 (Hex)

04 (Hex)

Device
Address

Function
Code

Byte
Count

43 (Hex)

5B (Hex)

41 (Hex)

21 (Hex)

Data Register1 Data Register1 Data Register2 Data Register2

Low Byte
Low Byte
High Byte
High Byte

6F (Hex)
CRC
Low

9B (Hex)
CRC
High

Byte Count : Total number of data bytes received.

Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.)

60

Table 4 : 3 X register addresses (measured parameters)

Address Parameter Parameter
(Register) No.
1
30001
Volts 1
2
30003
Volts 2
3
30005
Volts 3
4
30007
Current 1
5
30009
Current 2
30011
6
Current 3
30013
7
W1
30015
8
W2
30017
9
W3
30019
10
VA1
30021
11
VA2
30023
12
VA3
30025
13
VAR1
30027
14
VAR2
30029
15
VAR3
30031
16
PF1
30033
17
PF2
30035
18
PF3
30037
19
Phase Angle 1
30039
20
Phase Angle 2
30041
21
Phase Angle 3
30043
22
Volts Ave
30045
23
Volts Sum
30047
24
Current Ave
30049
25
Current Sum

Modbus Start Address Hex

3P 4W 3P 3W
High Byte
Low Byte
00
0
00
2
00
4
00
6
00
8
00
A
00
X
C
00
X
E
00
X
10
00
X
12
00
X
14
00
X
16
00
X
18
00
X
1A
00
X
1C
00
X
1E
00
X
20
00
X
22
00
X
24
00
X
26
00
X
28
00
2A
00
2C
00
2E
00
30

61

Address Parameter Parameter

Modbus Start Address Hex
3P 4W 3P 3W
High Byte
Low Byte
(Register) No.
30051
26
Watts Ave
00
32
30053
27
Watts Sum
00
34
30055
28
VA Ave
00
36
30057
29
VA Sum
00
38
30059
30
VAr Ave
00
3A
30061
31
VAr Sum
00
3C
30063
32
PF Ave
00
3E
30065
33
PF Sum
00
40
X
30067
34
Phase Angle Ave
00
42
30069
35
Phase Angle Sum
00
44
X
30071
36
Freq
00
46
30073
37
Wh Import
00
48
30075
38
Wh Export
00
4A
39
30077
VARh Import
00
4C
40
30079
VARh Export
00
4E
41
30081
VAh
00
50
42
30083
Ah
00
52
43
30085
W Demand (Import)
00
54
44
30087
W Max Demand (Import)
00
56
45
30089
W Demand (Export)
58
00
46
30091
W Max Demand (Export)
00
5A
47
30093
48
30095
49
30097
00
30099
50
51
VA Demand
00
64
30101
52
66
30103
VA Max Demand
00

62

Address Parameter Parameter

Modbus Start Address Hex
3P 4W 3P 3W
High Byte
Low Byte
(Register) No.
53
30105
A Demand
00
68
54
30107
A Max Demand
00
6A
67
30133
Volts Ave Max
00
84
68
30135
Volts Ave Min
00
86
71
30141
Current Ave Max
00
8C
72
30143
Current Ave Min
00
8E
101
30201
VL 1 - 2 ( Calculated )
X
00
C8
102
30203
VL 2 - 3 ( Calculated )
X
00
CA
103
30205
VL 3 - 1 ( Calculated )
X
00
CC
104
30207
V1 THD( % )
00
CE
105
30209
V2 THD( % )
00
D0
106
30211
V3 THD( % )
00
D2
107
30213
I1 THD( % )
00
D4
108
30215
I2 THD( % )
00
D6
109
30217
I3 THD( % )
00
D8
110
30219
System Voltage THD( % )
00
DA
111
30221
System Current THD( % )
00
DC
113
30225
I neutral
X
00
E0
114
30227
Run Hour
00
E2
115
30229
On Hour
00
E4
116
30231
No. Of Interrupts
00
E6

Note : Parameters 1,2,3 are L-N Voltage for 3P 4W & L-L Voltage for 3P 3W .

63

Accessing 4 X register for Reading & Writing :

Each setting is held in the 4X registers .ModBus code 03 is used to read the current setting
and code 16 is used to write/change the setting. Refer Table 5 for 4 X Register addresses.
Example : Reading System type
System type : Start address= 0A (Hex)
Number of registers = 02
Note :Number of registers = Number of Parameters x 2
Query :

Device Address

01 (Hex)

Function Code

03 (Hex)

Start Address High

00 (Hex)

Start Address Low

0A (Hex)

Number of Registers Hi

00 (Hex)

Number of Registers Lo

02 (Hex)

CRC Low

E4 (Hex)

CRC High

09 (Hex)

Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
(Note : Two consecutive 16 bit register represent one parameter.)

64

Response: System Type ( 3phase 4 wire = 3 )

Device Address

01 (Hex)

Function Code

03 (Hex)

Byte Count

04 (Hex)

Data Register1 High Byte

40 (Hex)

Data Register1Low Byte

40 (Hex)

Data Register2 High Byte

00 (Hex)

Data Register2 Low Byte

00(Hex)

CRC Low

EE (Hex)

CRC High

27 (Hex)

Byte Count : Total number of data bytes received.

Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.)

Example : Writing System type

System type :

Start address= 0A (Hex)

Number of registers = 02

65

Query:( Change System type to 3phase 3wire = 2 )

Device Address

01 (Hex)

Function Code

10 (Hex)

Starting Address Hi

00 (Hex)

Starting Address Lo

0A(Hex)

Number of Registers Hi

00 (Hex)

Number of Registers Lo

02(Hex)

Byte Count

04 (Hex)

Data Register-1High Byte

40 (Hex)

Data Register-1 Low Byte

00(Hex)

Data Register-2 High Byte

00(Hex)

Data Register-2 Low Byte

00(Hex)

CRC Low

66 (Hex)

CRC High

10 (Hex)

Byte Count : Total number of data bytes received.

Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.)

66

Response:

Device Address

01 (Hex)

Function Code

10 (Hex)

Start Address High

00 (Hex)

Start Address Low

0A(Hex)

Number of Registers Hi

00 (Hex)

Number of Registers Lo

02(Hex)

CRC Low

61 (Hex)

CRC High

CA (Hex)

Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
(Note : Two consecutive 16 bit register represent one parameter.)

Table 5 : 4 X register addresses

Address Parameter Parameter
(Register) No.
1
40001
Demand Time
40003
Demand Period
2
Energy display on Modbus
3
40005
4
40007
Sys Voltage
5
40009
Sys Current
6
40011
Sys Type
7
40013
Pulse Width
8
40015
Energy Reset

Read / Write Modbus Start Address Hex

High Byte
Low Byte
00
00
00
02
00
04
00
06
00
08
00
0A
00
0C
00
0E

R/Wp
R
R/Wp
R/Wp
R
R
R/Wp
R/Wp
Wp
W

67

Address Parameter Parameter

(Register) No.
Run/On Hour & Interruption Reset
9
40017
RS 485 Set-up Code
40019
10
11
40021
.Node Address.
12
40023
Pulse Divisor
13
40025
Min Reset
14
40027
Max Reset
15
40029
Analog Out 1- Para Sel
16
40031
Analog Out 2- Para Sel
17
40033
PT Primary
18
40035
CT Primary
19
40037
System Power
20
Energy digit reset count
40039
21
40041
Register Order/Word Order
22
CT Secondary
40043
23
40045
PT Secondary
24
40047
Relay1 output select
25
40049
Pulse1/Limit1 Parameter select
26
40051
Limit1 Trip point
27
40053
Hysteresis(Limit1)
28
40055
Limit1 delay(On)
29
40057
Limit1 delay(Off)
30
40059
Relay2 output select
Pulse2/Limit2 Parameter select
31
40061
32
40063
Limit2 Trip point
33
40065
Hysteresis(Limit2)
34
Limit2 Delay(On)
40067
35
40069
Limit2 Delay(Off)
36
40071
Password
37
40073
Limit1 Configuration select
38
40075
Limit2 Configuration select
39
40077
Auto scroll
30mA Noise Current Elimination
40
40079

68

Read / Write Modbus Start Address Hex

High Byte
Low Byte
00
Wp
10
12
R/Wp
00
R/Wp
00
14
R/Wp
00
16
Wp
00
18
Wp
00
1A
R/Wp
00
1C
R/Wp
00
1E
R/Wp
00
20
R/Wp
00
22
00
R
24
R/Wp
00
26
R/Wp
00
28
R/Wp
00
2A
R/Wp
00
2C
R/Wp
00
2E
R/Wp
00
30
R/Wp
00
32
R/Wp
00
34
R/Wp
00
36
R/Wp
00
38
R/Wp
00
3A
R/Wp
00
3C
R/Wp
00
3E
R/Wp
00
40
R/Wp
00
42
R/Wp
00
44
R/W
00
46
R/Wp
00
48
R/Wp
00
4A
R/Wp
00
4C
R/Wp
00
4E

Explanation for 4 X register :

Address

Description

Parameter

40001

Demand Reset Demand Reset is used to reset the Demand parameter.

A value of zero must be Written to this register to reset
the Demand period. Writing any other value will return
an error.

40003

Demand
Period

Demand period represents demand time in minutes.

The applicable values are 8,15,20 or 30. Writing any
other value will return an error.

40005

Energy display
on Modbus

This address is used to set energy display on modbus in

Wh,KWh & MWh.Write one of the following value to this
address.
1 = Energy in Wh.
2 = Energy in KWh.
3 = Energy in MWh.

40007

System Voltage This address is read only and displays System Voltage

40009

System Current This address is read only and displays System Current

40011

System Type

40013

Pulse Width
of Relay

This address is used to set the System type.

Write one of the following value to this address.
2 = 3 Phase 3 Wire
3 = 3 Phase 4 Wire.
Writing any other value will return error .
This address is used to set pulse width of the Pulse
output. Write one of the following values to this address:
60 : 60 ms
100 : 100 ms
200 : 200 ms
Writing any other value will return error .

69

Address
40015

Parameter

Description

Reset Energy
Counter

This address is used to reset the Energy Counter.

Write zero value to this register to reset the energy
counter. Writing any other value will return an error.

40017

Run/On Hour & This address is used to reset the Run/On hour & number
Interruption
of Interruption . Write zero value to this register to reset
the Run/On hour & number of Interruption.
reset
Writing any other value will return an error.

40019

Rs485 Set-up
Code

This address is used to set the baud rate, Parity,

Number of stop bits. Refer to Table 6 for details.

40021

Node
Address

This register address is used to set Device address

between 1 to 247 .

40023

Pulse Divisor

This address is used to set pulse divisor of the Pulse

output. Write one of the following values to this address
for Wh:
1:
Divisor 1
10 : Divisor 10
100 : Divisor 100
1000 : Divisor 1000 & In KWH or MWh divisior will be
1 default. Writing any other value will return an error.

40025

Min - Reset

This address is used to reset the Min parameters value.

Write Zero value to this register to reset the Min
parameters. Writing any other value will return an error.

40027

Max - Reset

This address is used to reset the Max parameters value.

Write Zero value to this register to reset the Max
parameters. Writing any other value will return an error.

70

Address

Description

Parameter

40029

Analog Out 1Para Set

This address is used to set the parameter for Analog

Output 1.Write one of the parameter no. As per the
options given in Table 2 for Analog & Limit Output
Parameters. Writing any other value will return an error.

40031

Analog Out 2Para Set

This address is used to set the parameter for Analog

Output 2. Write one of the parameter no. As per the
options given in Table 2 for Analog & Limit Output
Parameters. Writing any other value will return an error.

40033

PT Primary

This address allows the user to set PT Primary value.

The maximum settable value is 692.8kV L-L
depends on the per phase 666.6MVA Restriction of
power combined with CT primary

40035

CT Pimary

This address allows the user to set CT Primary value.

The maximum settable value is 9999 & also depends on
the per phase 666.6MVA Restriction of power combined
with PT primary

40037

Sys Power

System Power (Read Only) is the Nominal system

power based on the values of Nominal system volts
and Nominal system current.

40039

Energy digit
Reset Count

This address is used to setting maximum energy count

after which energy will rollback to zero depends upon
setting of Wh,KWh, & MWh.If Energy display on modbus
in Wh count will be set in between 7 to 14 or In KWh set
in between 7 to 12 & In MWh set in between 7 to 9.

71

Address

Description

Parameter

40041

Word Order

40043

CT secondary

40045

PT secondary

This address is used to read and write the PT secondary

value. Ref Table for the range of PT secondary settable
values in Section 3.2.1.3

40047

Relay1 output
select

This address is used to select the Relay 1 operation as

pulse or Limit.
write one of the following values to this address.
0 = Pulse output on Relay 1
128 (Decimal) = Limit output on Relay 1
writing any other value will return an error.

40049

Pulse 1 /Limit 1 This address is used to assign the Parameter to Relay1

If Limit option is selected refer table 2 for parameter
parameter
number & if Pulse option is selected then refer table 7.
select

Word Order controls the order in which MULTIS Lm5x

receives or sends floating - point numbers:- normal or
reversed register order . In normal mode, the two
registers that make up a floating point numbers are sent
most significant bytes first. In reversed register mode ,
the two registers that make up a floating point numbers
are sent least significant bytes first. To set the mode,
write the value 2141.0 into this register- the instrument
will detect the order used to send this value and set
that order for all ModBus transaction involving floating
point numbers.
This address is used to read and write the CT
secondary value write one of the following values to this
address.
1=1A CT secondary
5=5A CT secondary
writing any other value will return an error.

72

Description

Address
40051

Parameter
Limit1
Trip Point

40053

Hysteresis
(Limit 1)

40055

Limit1
Energizing
Delay

This address is used to set the Energizing delay between

1 to 10 . Writting any other value will return an error.

40057

Limit1
de-energizing
Delay
Relay 2
output select

This address is used to set the De-Energizing delay

between 1 to 10 . Writting any other value will return
an error.
This address is used to select the Relay 2 operation as
pulse or Limit.
write one of the following values to this address.
0 = Pulse output on Relay 2
128 (decimal) = Limit output on Relay 2
writing any other value will return an error.

40061

Pulse 2/Limit 2
Parameter
select

This address is used to assign the Parameter to Relay2

If Limit option is selected refer table 2 for parameter
number & if Pulse option is selected then refer table 7.

40063

Limit 2
Trip point

This address is used to set the trip point in %. Any

value between 10 to 100 for Lo- alarm & 10 to120 for
Hi-alarm can be written to this address. Writing any
other value will return an error.

40065

Hysteresis
(Limit 2)

This address is used to set the hysteresis between

0.5 to 50 . Writting any other value will return an error.

40059

This address is used to set the trip point in %. Any value

between 10 to 100 for Lo- alarm & 10 to120 for Hi-alarm
can be written to this address. Writing any other value
will return an error.
This address is used to set the hysteresis between
0.5 to 50 . Writting any other value will return an error.

73

Address

Description

Parameter

40067

Limit 2
Energizing
delay

This address is used to set the Energizing delay

between 1 to 10 . Writting any other value will return
an error.

40069

Limit 2
De-Energizing
delay

This address is used to set the De-Energizing delay

between 1 to 10 . Writting any other value will return
an error.

40071

Password

This address is used to set & reset the password.

Valid Range of Password can be set is 0000 - 9999 .
1) If password lock is present & if this location is read it
will return zero.
2) If Password lock is absent & if this location is read it
will return One.
3) If password lock is present & to disable this lock
first send valid password to this location then write
0000 to this location
4) If password lock is present & to modify 4X parameter
first send valid password to this location so that 4X
parameter will be accessible for modification.
5) If for in any of the above case invalid password is
send then meter will return exceptional error 2.

40073

Limit1
Configuration
Select

This address is used to set the Configuration for relay 1

see table 8 . Writting any other value will return an error.

40075

Limit2
Configuration
Select

This address is used to set the Configuration for relay 2

see table 8 . Writting any other value will return an error.

74

Address

Description

Parameter

40077

Auto scroll

This address is used to activate or de-activatethe auto

scrolling write 0-Deactivate
1-Activate
Writing any other value will return an error.

40079

30mA Noise
current
Elimination

This address is used to activate or de-activatethe 30 mA

noise current elimination write
0-Deactivate
30 (Decimal)-Activate
Writing any other value will return an error.

Table 6 : RS 485 Set-up Code

Baud Rate

Parity

Stop Bit

Decimal value

19200
19200
19200
19200
9600
9600
9600
9600
4800
4800
4800
4800
2400
2400
2400
2400

NONE
NONE
EVEN
ODD
NONE
NONE
EVEN
ODD
NONE
NONE
EVEN
ODD
NONE
NONE
EVEN
ODD

01
02
01
01
01
02
01
01
01
02
01
01
01
02
01
01

12

75

13
14
15
08
09
10
11
04
05
06
07
00
01
02
03

NOTE :
Codes not listed in the table above may give rise to unpredictable results including loss of
communication. Excise caution when attempting to change mode via direct Modbus writes.

Table 7 : Pulse1 & Pulse2 Configuration select

Code
0
1
2
3
4

Configuration
Import Active Energy
Export Active Energy
Import Reactive Energy
Export Reactive Energy
Apparent Energy

Table 8 :Limit1 & Limit2 Configuration select

Code
0
1
2
3

Configuration
Hi- alarm & Energized relay
Hi- alarm & De-energized relay
Lo- alarm & Energized relay
Lo- alarm & De-energized relay

10.1 User Assignable Modbus Registers:

The MULTIS contains the 20 user assignable registers in the address range of 0x200
(30513) to 0x226 (30551) (see Table 9).
Any of the parameter addresses ( 3X register addresses Table 4)) accessible in the
instrument can be mapped to these 20 user assignable registers.
Parameters (3X registers addresses ) that resides in different locations may be accessed
by the single request by re-mapping them to adjacent address in the user assignable
registers area.
The actual address of the parameters ( 3X registers addresses) which are to be assessed
via address 0x200 to 0x226 are specified in 4x Register 0x200 to 0x213 (see Table 10).

76

Table 9 : User Assignable 3X Data Registers

Address
(Register)

30513
30515
30517
30519
30521
30523
30525
30527
30529
30531
30533
30535
30537
30539
30541
30543
30545
30547
30549
30551

Parameter
Number.

257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276

Assignable Register

Assignable Reg 1
Assignable Reg 2
Assignable Reg 3
Assignable Reg 4
Assignable Reg 5
Assignable Reg 6
Assignable Reg 7
Assignable Reg 8
Assignable Reg 9
Assignable Reg 10
Assignable Reg 11
Assignable Reg 12
Assignable Reg 13
Assignable Reg 14
Assignable Reg 15
Assignable Reg 16
Assignable Reg 17
Assignable Reg 18
Assignable Reg 19
Assignable Reg 20

77

Modbus Start Address (Hex)

High Byte
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02

Low Byte
00
02
04
06
08
0A
0C
0E
10
12
14
16
18
1A
1C
1E
20
22
24
26

Table 10 : User Assignable mapping register ( 4X registers)

Address
(Register)

40513
40514
40515
40516
40517
40518
40519
40520
40521
40522
40523
40524
40527
40528
40529
40530
40531
40532
40533
40534

Parameter
Number.

257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276

Mapping Register

Mapped Add for register #0x0200

Mapped Add for register #0x0202
Mapped Add for register #0x0204
Mapped Add for register #0x0206
Mapped Add for register #0x0208
Mapped Add for register #0x020A
Mapped Add for register #0x020C
Mapped Add for register #0x020E
Mapped Add for register #0x0210
Mapped Add for register #0x0212
Mapped Add for register #0x0214
Mapped Add for register #0x0216
Mapped Add for register #0x0218
Mapped Add for register #0x021A
Mapped Add for register #0x021C
Mapped Add for register #0x021E
Mapped Add for register #0x0220
Mapped Add for register #0x0222
Mapped Add for register #0x0224
Mapped Add for register #0x0226

Modbus Start Address (Hex)

High Byte
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02
02

Low Byte
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13

Example :
Assigning parameter to user assignable registers
To access the voltage2 (3X address 0x0002) and Power Factor1 (3X address 0x001E)
through user assignable register assign these addresses to 4x register (Table 10 ) 0x0200
and 0x0201 respectively .

78

Assigning Query:

Device Address
Function Code
Starting Address Hi
Starting Address Lo
Number of Registers Hi
Number of Registers Lo
Byte Count
Data Register-1High Byte
Data Register-1 Low Byte
Data Register-2 High Byte
Data Register-2 Low Byte
CRC Low
CRC High

01 (Hex)
10 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)*
02(Hex)*
04 (Hex)
00 (Hex)
02 (Hex)
00 (Hex)
1E (Hex)
CB (Hex)
07 (Hex)

Voltage 2 *

}(3X Address 0x0002)

Power Factor 1 *
}(3X
Address 0x001E)

* Note : Parameters should be assigned in Multiple of two i.e. 2,4,6,8.......20.

Response :

Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High

01 (Hex)
10 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)
02 (Hex)
40 (Hex)
70 (Hex)

Reading Parameter data through User Assignable Registers:

In assigning query Voltage2 and Power Factor1 parameters were assigned to 0x 200 and
0x201(Table10) which will point to user assignable 3xregisters 0x200 and 0x202
(table9). So to read Voltage2 and PowerFactor1 data reading query should be as below.

79

Query:

01 (Hex)
04 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)
04 (Hex) **
F0 (Hex)
71 (Hex)

Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High

Start Address High : Most significant 8 bits of starting address of User assignable register.
Start Address low :Least significant 8 bits of starting address of User assignable register.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
**Note : Two consecutive 16 bit register represent one parameter.
Since two parameters are requested four registers are required
Response : (Volt2 = 219.30 / Power Factor1 = 1.0)

Device Address
Function Code
Byte count
Data Register-1High Byte
Data Register-1 Low Byte
Data Register-2 High Byte
Data Register-2 Low Byte
Data Register-3 High Byte
Data Register-3 Low Byte
Data Register-4 High Byte
Data Register-4 Low Byte
CRC Low
CRC High

01 (Hex)
04 (Hex)
08 (Hex)
43 (Hex)
5B (Hex)
4E (Hex)
04 (Hex)
3F (Hex)
80 (Hex)
00 (Hex)
00 (Hex)
79 (Hex)
3F (Hex)

80

}
}

Voltage 2 Data

Power Factor 1Data

(Starting Address)

User Assignable mapping Registers

User Assignable Data Registers
( 4X Registers Table10 )
(Starting Address) ( 3X Registers Table 9 )

0x200

Voltage 2 (0x0002)

0x200

0x200
(16 bit)

(16 bit)

0x201

Power Factor 1 (0x001E)

0x202

0x202

0x203

(16 bit)

(16 bit)

0x202

Wh Import (0x0048)

0x204

0x204

0x205

(16 bit)

(16 bit)

0x203

Frequency (0x0046)

0x206

0x206

0x207

0x212

Current 1 (0x0006)

0x224

0x224
(16 bit)

(16 bit)

0x213

VAh (0x0050)

0x226

0x226

0x227

(16 bit)

(16 bit)

(16 bit)

0x201

(16 bit)

0x225

To get the data through User assignable Register use following steps:
1) Assign starting addresses(Table3) of parameters of interest to a User assignable
mapping registers in a sequence in which they are to be accessed (see section
Assigning parameter to user assignable registers)
2) Once the parameters are mapped data can be acquired by using User assignable data
register Starting address . i.e to access data of Voltage2, Power factor1,Wh import,
Frequency send query with starting address 0x200 with number of register 8 or
individually parameters can be accessed for example if current1 to be accessed use
starting address 0x212. (See section Reading Parameter data through User
Assignable Registers)

81

11. Phaser Diagram :

Capacitive

Inductive

Capacitive

Inductive
Connections Quadrant

Sign of
Active
Power ( P )

Sign of
Sign of
Inductive /
Reactive
Power
Capacitive
Power ( Q ) Factor ( PF )

Import

+P

+Q

Import

+P

-Q

Export

-P

+Q

Export

-P

-Q

Inductive means Current lags Voltage

Capacitive means Current leads Voltage

82

When MULTIS displays Active power ( P )with + ( positive signthe

) , connection is Import .
When MULTIS displays Active power ( P )with - ( negative signthe
) , connection is Export .

12. Installation
Mounting is by four side clamps, slide the side clamps through side slot till side clamp gets
firmly locked in a groove (Refer fig.) Consideration should be given to the space required
behind the instrument to allow for bends in the connection cables.
PANEL

SLIDE IN THIS DIRECTION AND LOCK

MULTIS Lm

As the front of the enclosure conforms to IP54 it is protected from water spray from all
directions, additional protection to the panel may be obtained by the use of an optional panel
gasket. The terminals at the rear of the product should be protected from liquids.
The MULTIS should be mounted in a reasonably stable ambient temperature and
0
where the operating temperature is within the range -10 to 55 C . Vibration should be kept
to a minimum and the product should not be mounted where it will be subjected to
excessive direct sunlight.

83

Caution
1.
2.
3.

In the interest of safety and functionality this product must be installed by

a qualified engineer, abiding by any local regulations.
Voltages dangerous to human life are present at some of the terminal
connections of this unit. Ensure that all supplies are de-energised before
attempting any connection or disconnection.
These products do not have internal fuses therefore external fuses must
be used to ensure safety under fault conditions.

12.1 EMC Installation Requirements

This product has been designed to meet the certification of the EU directives when installed
to a good code of practice for EMC in industrial environments, e.g.
1. Screened output and low signal input leads or have provision for fitting RF suppression
components, such as ferrite absorbers, line filters etc., in the event that RF fields
cause problems.
Note: It is good practice to install sensitive electronic instruments that are performing
critical functions, in EMC enclosures that protect against electrical interference which could
cause a disturbance in function.
2. Avoid routing leads alongside cables and products that are, or could be, a source of
interference.
3. To protect the product against permanent damage, surge transients must be limited to
2kV pk. It is good EMC practice to suppress differential surges to 2kV at the source.
The unit has been designed to automatically recover in the event of a high level of
transients. In extreme circumstances it may be necessary to temporarily disconnect the
auxiliary supply for a period of greater than 5 seconds to restore correct operation.
The Current inputs of these products are designed for connection in to systems via
Current Transformers only, where one side is grounded.
4. ESD precautions must be taken at all times when handling this product.

84

12.2 Case Dimension and Panel Cut Out

3.78

3.15

3.62

96mm

80mm

92mm

3.62

3.78
96mm

FRONT DISPLAY
AREA

PANEL CUTOUT

92mm

MAX PANEL THICKNESS 0.18,5mm

12.3 Wiring
Input connections are made directly to screw-type terminals with indirect wire pressure.
Numbering is clearly marked in the plastic moulding. Choice of cable should meet local
2
regulations. Terminal for both Current and Voltage inputs will accept upto 3mm x 2
diameter cables.

Note : It is recommended to use wire with lug for connection with meter.

12.4 Auxiliary Supply

MULTIS should ideally be powered from a dedicated supply, however it may be powered
from the signal source, provided the source remains within the limits of the chosen auxiliary
voltage.

12.5 Fusing

It is recommended that all voltage lines are fitted with 1 amp HRC fuses.

12.6 Earth/Ground Connections

For safety reasons, CT secondary connections should be grounded in accordance with
local regulations.

85

13. Connection Diagrams

3-PHASE 4-WIRE UNBALANCED LOAD

DIGITAL METERING SYSTEM

3-PHASE 3-WIRE UNBALANCED LOAD

DIGITAL METERING SYSTEM
2 5 8

2 5 8 11 1 3 4 6 7 9 13 14

3 4 6 7 9

L N
AUX
SUPPLY

L N
AUX
SUPPLY
L1
L2
L3
N

P1 S1

P1 S1

L
O
A
D

L1
L2
L3
N

P1 S1
P1 S1
P1 S1

L
O
A
D

14. Specification :
System
3 Phase 3 Wire / 4 Wire programmable at site
Inputs
Nominal input voltage
(Three wire and Four wire)

57.7VL-N to 277VL-N (100VL-L to 480 VL-L)

Max continuous input voltage

120% of Rated Value

Max short duration input voltage

Normal input voltage burden

2 x Raged Value
(1s application repeated 10 times at 10s intervals)
0.2VA apprax. per phase

Nominal input current

Max continuous input current
Nominal input current burden

1A / 5A AC rms programmable at site

120% of Rated Value
0.6VA approx. per phase

86

Max short duration current input

System CT primary values

20 x Rated Value (1s application repeated

5 times at 5 min. intervals)
Std. Values from 1 to 9999A
(1 or 5 Amp secondaries)

Auxiliary
Standard nominal Auxiliary
Supply voltages & Frequency
a.c. supply voltage tolerance
a.c. supply frequency range
a.c. supply burden
d.c. supply burden

110V AC/50 Hz , 230V AC/50 Hz ,380V AC/50 Hz ,

100 - 250V AC- DC (45-66Hz),
12 - 48V DC
+20 % / -15 % of Rated Value
45 to 66 Hz
4.5VA
3W

Operating Measuring Ranges

Voltage
Current
Frequency
Power Factor

5 .. 120 % of Rated Value

5 .. 120 % of Rated Value
40 .. 70 Hz
0.5 Lag ... 1 ... 0.8 Lead

Accuracy
Accuracy 1:
Voltage
Current
Frequency
Active Power
Re- Active Power

0.5 % of range
0.5 % of range
0.15% of mid frequency
0.5 % of range
0.5 % of range

87

Apparent Power
Active Energy
Re - Active Energy

0.5 % of range
1.0 % of range
1.0 % of range

Apparant Energy
Power Factor
Angle
Analog Output
Total Harmonic Distortion
Neutral Current

1.0 % of range
1 % of Unity
1 % of range
1 % of Output end value
4 % of range.

Accuracy 0.5:
Voltage

0.5 % of range

Current
Frequency
Active Power
Re- Active Power
Apparent Power
Active Energy

0.5 % of range
0.15% of mid frequency
0.5 % of range
0.5 % of range
0.5 % of range
0.5 % of range

Re - Active Energy
Apparant Energy

0.5 % of range
0.5 % of range

Power Factor
Angle

1 % of Unity
1 % of range

Analog Output

1 % of Output end value

Total Harmonic Distortion

Neutral Current

1%
4 % of range

88

Accuracy 0.2:
Voltage

0.2 % of range

Current
Frequency

0.2 % of range
0.15% of mid frequency
0.2 % of range
0.2 % of range
0.2 % of range
0.2 % of range
0.2 % of range
0.2 % of range
1 % of Unity
1 % of range
1 % of Output end value

Active Power
Re- Active Power
Apparent Power
Active Energy
Re - Active Energy
Apparant Energy
Power Factor
Angle
Analog Output
Total Harmonic Distortion
Neutral Current

4 % of range

Reference conditions for Accuracy :

Reference temperature
Input frequency
Input waveform
Auxiliary supply voltage

0
23 0C 2 C
50 or 60Hz 2%
Sinusoidal (distortion factor 0.005)
Rated Value 1 %

Auxiliary supply frequency

Voltage Range

Rated Value 1 %
50... 100% of Nominal Value.
60... 100% of Nominal Value for THD.

Current Range

10... 100% of Nominal Value.

20... 100% of Nominal Value for THD.

89

Power

cos / sin = 1
For Active / Reactive Power & Energy
10... 100% of Nominal Current &
50... 100% of Nominal Voltage.

Power Factor / Phase Angle

40... 100% of Nominal Current &

50... 100% of Nominal Voltage.

Nominal range of use of influence quantities for measurands

Voltage
Current
Input frequency
Temperature
Auxiliary supply voltage
Auxiliary supply frequency
Temperature Coefficient
(For Rated value range of use
0... 50 0C )
Error change due to variation of an
influence quantity

50 .. 120 % of Rated Value

10 .. 120 % of Rated Value
Rated Value 10 %
0 to 50 0C
Rated Value 10 %
Rated Value 10 %
0
0.025% / C for Voltage (50..120% of Rated Value)
0.05% / 0C for Current ( 10..120% of Rated Value )
2 * Error allowed for the reference
condition applied in the test.

Display
LED
Update

3 line 4 digits . Digit height 11mm

Approx. 1 seconds

Controls
User Interface

Two push buttons

90

Standards
EMC Immunity

IEC 61326
10V/m min-Level 3 industrial low level
electromagnetic radiation environment
IEC 61000-4-3.

Safety
IP for water & dust

IEC 61010-1 , Year 2001

IEC 60529

Isolation
Dielectric voltage withstand
test between circuits and
accessible surfaces

2.2 kV RMS 50 Hz for 1 minute

between all electrical circuits

Environmental
Operating temperature
Storage temperature
Relative humidity
Altitude
Warm up time
Shock
Vibration
Enclosure ( front only )

-10 to 55 0C
-20 to +65 0C
0 .. 90 % RH
2000m Max
3 minute (minimum)
15g in 3 planes
10 .. 55 Hz, 0.15mm amplitude
IP 54 as per IEC 60529

Enclosure
Style

96mm x 96mm DIN Quadratic

Material

Polycarbonate Housing ,
Self extinguish & non dripping as per UL 94 V-0
Screw-type terminals
< 80 mm
0.620 kg Approx.

Terminals
Depth
Weight

91

Pulse output Option ( 1 or 2 Relay ) :

Relay
Switching Voltage & Current

1NO + 1NC
240VDC , 5Amp.

Default Pulse rate Divisor

1 per Wh (up to 3600W),

1 per kWh (up to 3600kW),
1 per MWh (above 3600 kW)
Programmable on site

Pulse rate Divisors

10

1 per 10Wh (up to 3600W),

1 per 10kWh (up to 3600kW),
1 per 10MWh (above 3600 kW)

100

1 per 100Wh (up to 3600W),

1 per 100kWh (up to 3600kW),
1 per 100MWh (above 3600 kW)

1000

1 per 1000Wh (up to 3600W),

1 per 1000kWh (up to 3600kW),
1 per 1000MWh (above 3600 kW)

Pulse Duration

60ms , 100ms or 200ms

Note : Above conditions are also applicable for Reactive & Apparent Energy .

ModBus ( RS 485 ) Option :

Protocol

ModBus ( RS 485 )

Baud Rate

19200 , 9600 , 4800 or 2400

( Programmable )

Parity

Odd or Even, with 1 stop bit,

Or None with 1 or 2 stop bits

92

Analog Output Option :

Linear

0 ... 1mA dc into 0 - 2 kohm

Uni-directional, internally powered .
4 ... 20mA dc into 0 - 500 ohm
Uni-directional, internally powered.

15. Connection for Optional Pulse Output / RS 485

/ Analog Output ( rear view of MULTIS ) :
1. One Pulse Output (One Limit Output)

N/O N/C COM

Relay 1

2. Two Pulse Output ( Two Limit Output)

N/O N/C COM

Relay 1

N/O N/C COM

Relay 2

93

3. RS 485 Output

A Gnd
RS 485

A Gnd
RS 485

4. Two Analog Output

Gnd A1 A2 Gnd
4 -20 mA

5. One Pulse (One Limit) + RS 485 Output

N/O N/C COM

Relay 2

94

6. One Pulse (One Limit) + Two Analog Output

Gnd A1 A2 Gnd
0 - 1mA

N/O N/C COM

Relay 2

7. RS 485 + Two Analog Output

Gnd A1 A2 Gnd
4 -20 mA

A Gnd
RS 485

8. RS 485 Output + One Pulse (One Limit) + Two Analog Output

Gnd A1 A2 Gnd
0 - 1mA

N/O N/C COM

Relay 2

95

A Gnd
RS 485

9. Two Pulse (Two Limit) + RS 485 Output

N/O N/C COM

Relay 1

N/O N/C COM

Relay 2

A Gnd
RS 485

!
CAUTION!
Read & Understand this manual Before using the Instruments

Installation Instructions:
Multifunction Meter is ready to fit on the Panel by using fixing clamp provided with instruments.
Before Installation please make proper cut out on the panel as per sizes given in the
INSTALLATION CUT OUT. Please refer MOUNTING POSITION & CONNECTION DIA.
The connection at rear of the case should be free from liquids. Consideration should be given
to the space required behind the unit to allow the bends in the connecting cable.
Note: Ensure proper grounding of panel before installtion.

Indoor Use:
The unit should not be mounted where it can be subjected to excessive direct sunlight and
vibration should be kept minimum. Connection wires should be sized to comply with local
regulations and should be terminated on to tags suitable for screw connection.
Measurement Category: CAT III 300V. Pollution Degree 2.
Ventilation Requirement: This product is designed to use on Panel, no need to provide
extra ventilation for the same.

96

Wiring:
Input Connections are made directly to screw -type terminals with indirect wire pressure.
Numbering is clearly marked in the plastic moulding. Choice of cable should meet local
regulations. Terminals for both voltage and current inputs will accept upto 3mm2x2
diameter cables.

Note:
1)It is recommended to use wire with lug for connection with meter.
2)The instrument is not equipped with an integrated circuit breaker. During installation
check that a labeled switch is installed and that it can be easily be reached by operator.
3)The instruments must be taken out of service if safe operation is no longer possible
(eg. visible damage) in this case all the connection must be switched off.

Specification:
Disconnecting device used must meet the relevant requirements of IEC-60947-1 &
IEC-60947-3.
For Aux.: At least 1.5 times of applied Power supply.
For Measuring Input: At least 1.5 times of measuring inputs.
(Switching time of the device should be <0.1sec. for Aux. & I/P both.)

Cleaning & Maintenance:

No Cleaning and Maintenance is required beyond periodically checking of terminal area &
ensuring the connection remain tight.
Marking & Rating: Side Label Shows function, electrical rating & connection diagram.

Explanation of Symbols :
CAT III

CE Conformity mark

Caution! General Hazard Point.

Read the operating instructions
Attention Danger to life! Ensure that all leads
are free of potential when Connecting them

97

Measurement category Cat III for current

and voltage Inputs and Power Supply

Three phase alternating current

Note:

98

Note:

99

Item No:2-60-006-00-00507_Rev A_4/14

The Information contained in these installation instructions is for use only by installers trained to make electrical power
installations and is intended to describe the correct method of installation for this product.
It is the user's responsibility to determine the suitability of the installation method in the user's field conditions.

Socomec India Private Limited

756, Pace City II, Sector-37,
Gurgaon 122001 (Haryana) India
Tel. 0124-4562700
100