GRUNDFOS INSTRUCTIONS

CRE, CRIE, CRNE, SPKE, MTRE, MTHE,

CME
Installation and operating instructions

CRE, CRIE, CRNE, SPKE, MTRE,

CME
Installation and operating instructions
Other languages
http://net.grundfos.com/qr/i/98358864
 Table of contents
CRE, CRIE, CRNE, SPKE, MTRE, MTHE, CME

English (GB)
Installation and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3
English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions 7. Setting the product . . . . . . . . . . . . . 38

Table of contents 7.1 Priority of settings . . . . . . . . . . . . . . . 38
7.2 Setpoint . . . . . . . . . . . . . . . . . . . . 38
1. General information . . . . . . . . . . . . . 5 7.3 Operating mode . . . . . . . . . . . . . . . . 38
1.1 Hazard statements . . . . . . . . . . . . . . 5 7.4 Set manual speed. . . . . . . . . . . . . . . 39
1.2 Notes . . . . . . . . . . . . . . . . . . . . . 5 7.5 Set user-defined speed . . . . . . . . . . . . 39
1.3 Abbreviations and definitions . . . . . . . . . 6 7.6 Control mode . . . . . . . . . . . . . . . . . 39
2. Product introduction . . . . . . . . . .. . 6 7.7 Setting the proportional pressure. . . . . . . 43
2.1 Pumps without a factory-fitted sensor . .. . 6 7.8 Analog inputs . . . . . . . . . . . . . . . . . 43
2.2 Pumps with a factory-fitted pressure 7.9 Pt100/1000 inputs. . . . . . . . . . . . . . . 44
sensor . . . . . . . . . . . . . . . . . . .. . 6 7.10 Digital inputs . . . . . . . . . . . . . . . . . 45
2.3 Radio communication . . . . . . . . . . .. . 6 7.11 Digital inputs/outputs . . . . . . . . . . . . . 46
2.4 Battery. . . . . . . . . . . . . . . . . . .. . 7 7.12 "Signal relays" 1 and 2 (Relay outputs) . . . 47
7.13 Analog output . . . . . . . . . . . . . . . . . 48
3. Receiving the product. . . . . . . . . . . . 7
7.14 Controller settings. . . . . . . . . . . . . . . 49
3.1 Lifting the product . . . . . . . . . . . . . . . 7
7.15 Operating range. . . . . . . . . . . . . . . . 50
3.2 Inspecting the product . . . . . . . . . . . . 7
7.16 External setpoint function . . . . . . . . . . . 51
3.3 Handling the product . . . . . . . . . . . . . 7
7.17 Availability of predefined setpoints . . . . . . 52
4. Mechanical installation . . . . . . . . . . . 7 7.18 Limit-exceeded function . . . . . . . . . . . 53
4.1 Mounting . . . . . . . . . . . . . . . . . . . 7 7.19 LiqTec function . . . . . . . . . . . . . . . . 54
4.2 Cable entries . . . . . . . . . . . . . . . . . 7 7.20 Stop function (Low-flow stop function) . . . . 55
4.3 Cable glands . . . . . . . . . . . . . . . . . 7 7.21 Stop at min. speed . . . . . . . . . . . . . . 56
4.4 Cooling the motor . . . . . . . . . . . . . . . 8 7.22 Pipe filling function . . . . . . . . . . . . . . 56
4.5 Installing the product outdoors or in areas 7.23 Pulse flowmeter setup . . . . . . . . . . . . 57
with high humidity . . . . . . . . . . . . . . . 8 7.24 Ramps. . . . . . . . . . . . . . . . . . . . . 57
4.6 Drain holes . . . . . . . . . . . . . . . . . . 8 7.25 Standstill heating . . . . . . . . . . . . . . . 58
5. Electrical connection . . . . . . . . . . . . 8 7.26 Alarm handling . . . . . . . . . . . . . . . . 58
5.1 Protection against electric shock, indirect 7.27 Motor bearing monitoring . . . . . . . . . . . 58
contact. . . . . . . . . . . . . . . . . . . . . 9 7.28 Service . . . . . . . . . . . . . . . . . . . . 58
5.2 Cable requirements . . . . . . . . . . . . . . 9 7.29 Pump number . . . . . . . . . . . . . . . . . 59
5.3 Power supply . . . . . . . . . . . . . . . . . 9 7.30 Enable/disable radio comm. . . . . . . . . . 59
5.4 Additional protection . . . . . . . . . . . . . 10 7.31 Language . . . . . . . . . . . . . . . . . . . 59
5.5 Connection terminals . . . . . . . . . . . . . 11 7.32 Set date and time . . . . . . . . . . . . . . . 59
5.6 Signal cables . . . . . . . . . . . . . . . . . 15 7.33 Units . . . . . . . . . . . . . . . . . . . . . . 59
5.7 Bus connection cable . . . . . . . . . . . . . 15 7.34 Enable/disable settings . . . . . . . . . . . . 59
5.8 Signal relays . . . . . . . . . . . . . . . . . 15 7.35 Delete history . . . . . . . . . . . . . . . . . 59
7.36 Define Home display . . . . . . . . . . . . . 59
6. Control functions . . . . . . . . . . . . . . 18
7.37 Display settings . . . . . . . . . . . . . . . . 60
6.1 User interfaces . . . . . . . . . . . . . . . . 18
7.38 Store actual settings . . . . . . . . . . . . . 60
6.2 Standard operating panel . . . . . . . . . . . 19
7.39 Recall stored settings . . . . . . . . . . . . . 60
6.3 Advanced operating panel . . . . . . . . . . 21
7.40 Pump name . . . . . . . . . . . . . . . . . . 60
6.4 Grundfos GO . . . . . . . . . . . . . . . . . 27
7.41 Connection code . . . . . . . . . . . . . . . 60
6.5 Grundfos Eye . . . . . . . . . . . . . . . . . 31
7.42 Run start-up guide . . . . . . . . . . . . . . 60
6.6 Bus signal . . . . . . . . . . . . . . . . . . . 33
7.43 Alarm log . . . . . . . . . . . . . . . . . . . 60
6.7 Installing a communication interface
7.44 Warning log . . . . . . . . . . . . . . . . . . 60
module . . . . . . . . . . . . . . . . . . . . 33
7.45 Assist . . . . . . . . . . . . . . . . . . . . . 60
6.8 Identification of the functional module . . . . 35
7.46 Assisted pump setup . . . . . . . . . . . . . 60
6.9 Identification of the operating panel . . . . . 36
7.47 Setup, analog input . . . . . . . . . . . . . . 61
6.10 Changing the position of the operating
panel . . . . . . . . . . . . . . . . . . . . . 36 7.48 Setting of date and time . . . . . . . . . . . 61
7.49 Setup of multipump system. . . . . . . . . . 61

4
 English (GB)
7.50 Description of control mode . . . . . . . . . 64 1.2 Notes
7.51 Assisted fault advice . . . . . . . . . . . . . 64 The symbols and notes below may appear in
7.52 Factory settings . . . . . . . . . . . . . . . . 65 Grundfos installation and operating instructions,
safety instructions and service instructions.
8. Servicing the product . . . . . . . . . . . . 66
8.1 Motor . . . . . . . . . . . . . . . . . . . . . 66
8.2 Pump . . . . . . . . . . . . . . . . . . . . . 66 Observe these instructions for explosion-
proof products.
8.3 Cleaning the product . . . . . . . . . . . . . 66

9. Technical data . . . . . . . . . . . . . . . . 66
9.1 Operating conditions . . . . . . . . . . . . . 66 A blue or grey circle with a white graphical
9.2 Electrical data . . . . . . . . . . . . . . . . . 68 symbol indicates that an action must be
taken.
9.3 Megging . . . . . . . . . . . . . . . . . . . . 70
9.4 Other technical data . . . . . . . . . . . . . 70
9.5 Accessories . . . . . . . . . . . . . . . . . . 71 A red or grey circle with a diagonal bar,
possibly with a black graphical symbol,
9.6 Sound pressure level . . . . . . . . . . . . . 71
indicates that an action must not be taken
10. Disposing of the product . . . . . . . . . . 72 or must be stopped.

11. Document quality feedback . . . . . . . . 72

If these instructions are not observed, it
may result in malfunction or damage to the
1. General information equipment.

Read this document before you install the

product. Installation and operation must
comply with local regulations and accepted Tips and advice that make the work easier.
codes of good practice.

1.1 Hazard statements

The symbols and hazard statements below may
appear in Grundfos installation and operating
instructions, safety instructions and service
instructions.

DANGER
Indicates a hazardous situation which, if
not avoided, will result in death or serious
personal injury.

WARNING
Indicates a hazardous situation which, if
not avoided, could result in death or
serious personal injury.

CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or
moderate personal injury.

The hazard statements are structured in the following

way:

SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.

5
English (GB)

1.3 Abbreviations and definitions 2. Product introduction

These installation and operating instructions are
AI Analog input a supplement to the installation and operating
instructions for the corresponding standard pumps
AL Alarm, out of range at lower limit CR, CRI, CRN, SPK, MTR and CM. For instructions
AO Analog output not mentioned specifically in this manual, see the
installation and operating instructions for the standard
AU Alarm, out of range at upper limit pump.
CIM Communication interface module Grundfos E-pumps are fitted with frequency-
controlled permanent-magnet motors for single-phase
The ability to draw current into the or three-phase mains connection.
Current
terminal and guide it towards GND in
sinking You can fit the motors with a Grundfos add-on
the internal circuitry
communication interface module (CIM). The module
The ability to push current out of the enables data transmission between the motor and
Current
terminal and into an external load an external system. The module communicates via
sourcing
which must return it to GND fieldbus protocols.
DI Digital input
2.1 Pumps without a factory-fitted sensor
DO Digital output
The pumps have a built-in PI controller and can be
ELCB Earth leakage circuit breaker set for an external sensor enabling the control of the
following parameters:
FM Functional module
• constant pressure
Grundfos Digital Sensor: • constant differential pressure
GDS Factory-fitted sensor in some • constant temperature
Grundfos pumps
• constant differential temperature
Proprietary Grundfos fieldbus • constant flow rate
GENIbus
standard • constant level
Ground fault circuit interrupter • constant curve
GFCI
(USA and Canada) • constant other value.
GND Ground The pumps are factory-set to constant-curve control
mode. You can change the control mode with the
Grundfos Grundfos GO, HMI 300, HMI 301 or via the Grundfos
Status indicator light
Eye GO Link.
Low voltage with the risk of electric
LIVE 2.2 Pumps with a factory-fitted pressure
shock if the terminals are touched
sensor
Open collector:
OC The pumps have a built-in PI controller and are set for
Configurable open-collector output
a pressure sensor enabling the control of the outlet
PE Protective earth pressure.
Protective extra-low voltage: The pumps are factory-set to constant-pressure
control mode. The pumps are typically used for
A voltage that cannot exceed ELV
PELV keeping a constant pressure in variable-demand
under normal conditions and under
systems.
single-fault conditions, except earth
faults in other circuits
2.3 Radio communication
RCD Residual-current device This product incorporates a radio module for remote
Safety extra-low voltage: control which is a class 1 device and that can be used
A voltage that cannot exceed ELV anywhere in the EU without restrictions.
SELV under normal conditions and under For use in the USA and Canada, see the appendix on
single-fault conditions, including earth installation in the USA and Canada.
faults in other circuits This product can communicate with the Grundfos GO
and other products of the same type via the built-in
radio module.

6
 English (GB)
In some cases, an external antenna may be required. CAUTION
Only Grundfos-approved external antennas may be Crushing of feet
connected to this product, and only by a Grundfos- Minor or moderate personal injury
approved installer.
‐ Wear safety shoes.
2.4 Battery ‐ Attach lifting equipment to the motor
eyebolts.
A Li-ion battery is fitted in the CRE, CRIE, CRNE,
SPKE, MTHE and MTRE pumps. The Li-ion battery
complies with the Battery Directive (2006/66/EC). The
battery does not contain mercury, lead or cadmium. Do not lift the product by the terminal box.

3. Receiving the product

3.1 Lifting the product
4. Mechanical installation

WARNING
4.1 Mounting
Falling objects CAUTION
Death or serious personal injury Crushing of feet
‐ Do not use the motor eyebolts to lift the Minor or moderate personal injury
entire pump if the pump is fitted with a ‐ Fasten the pump securely to a solid
motor of another make than Grundfos and even foundation according to the
MG and MGE. specifications in the installation and
‐ Follow the lifting instructions. operating instructions for the pump.
‐ Use lifting equipment that is approved
for the weight of the product. The product must be installed in a location
with access control to prevent
‐ Persons must keep a safe distance unauthorized access to the product.
from the product during lifting
operations.
‐ Wear personal protective equipment. The product must only be connected to
protected network subnets with strict
access control.
For lifting instructions, see the related
installation and operating instructions for
the pump. 4.2 Cable entries
See the size of the cable entries in the section on
3.2 Inspecting the product other technical data.

Before installing the product, do the following: Related information

1. Check if the product is as ordered. 9.4 Other technical data

2. Check if no visible parts are damaged. 4.3 Cable glands

3. If parts are damaged or missing, contact your The number and size of cable glands delivered with
local Grundfos sales company. the pump depend on the motor size. See the section
on other technical data.
3.3 Handling the product
Related information
Observe local regulations concerning limits for
manual lifting or handling. The weight of the product 9.4 Other technical data
is stated on the nameplate.

CAUTION
Back injury
Minor or moderate personal injury
‐ Use lifting equipment.

7
English (GB)

4.4 Cooling the motor • Connect the product permanently to the mains
supply and activate the built-in standstill heating
• Install the motor allowing a distance of minimum
function.
50 mm (D) between the end of the fan cover and
the wall or another fixed object. Related information
4.6 Drain holes
7.25 Standstill heating

4.6 Drain holes

The motor has a plugged drain hole on the drive side.
The drain hole is placed in the flange on the drive
side. You can turn the flange 90° to both sides or
180°.
With the drain hole open, the motor becomes self-
venting, allowing water and humid air to escape.
When you open the drain hole, the enclosure class of
the motor is lower than standard.

B3 B14 B5
TM071139

TM029037
D
• Position the product with sufficient space around.
• Make sure that the temperature of the cooling air
does not exceed 50 °C. 5. Electrical connection
• Keep cooling fins and fan blades clean.
DANGER
Electric shock
4.5 Installing the product outdoors or in Death or serious personal injury
areas with high humidity
‐ Switch off the power supply to the
If you install the product outdoors or in areas with motor and to the signal relays. Wait at
high humidity, take the following action to avoid least 5 minutes before you make any
condensation on the electronic components. connections in the terminal box. Make
sure that the power supply cannot be
To maintain the UL mark, additional switched on accidentally.
requirements apply to the equipment. See
the appendix concerning installation in the DANGER
USA and Canada. Electric shock
Death or serious personal injury
• Provide the product with a suitable cover.
‐ Check that the supply voltage and
The cover must be large enough to ensure that
frequency correspond to the values
the product is not exposed to direct sunlight, rain
stated on the nameplate.
or snow. Grundfos does not supply covers.
If the power cable is damaged, it must be replaced by
When fitting a cover to the product, the manufacturer, the manufacturer's service partner
observe the instructions for adequate or a similarly qualified person.
cooling. The user or the installer is responsible for correct
earthing and protection according to local regulations.
All operations must be carried out by a qualified
electrician.
TM053496

• Open the drain holes in the product.

8
 English (GB)
5.1 Protection against electric shock, 3 × 200-240 V
indirect contact Cross section
Power Conductor
WARNING [kW] type [mm2] [AWG]
Electric shock
Death or serious personal injury Solid 1.5 - 10 16-8
1.1 - 1.5
‐ Connect the product to protective earth Stranded 1.5 - 10 16-8
and provide protection against indirect
contact in accordance with local Solid 2.5 - 10 14-8
2.2 - 5.5
regulations. Stranded 2.5 - 10 14-8
Protective-earth conductors must have a yellow and
green (PE) or yellow, green and blue (PEN) colour 5.2.2 Conductors
marking.
Type
5.1.1 Protection against mains voltage transients The conductors are stranded or solid copper.
The product is protected against mains voltage
Temperature rating
transients in accordance with EN 61800-3.
Temperature rating for conductor insulation: 60 °C
5.1.2 Motor protection (140 °F).
The product incorporates thermal protection against Temperature rating for outer cable sheath: 75 °C
slow overloading and blocking. No external motor (167 °F).
protection is required.
Model H, I: The product includes load- and speed- 5.3 Power supply
sensitive motor-overload protection.
DANGER
Model J: The product includes load- and speed-
Electric shock
sensitive motor-overload protection.
Death or serious personal injury
Model K: The product includes load- and speed-
‐ Use the recommended fuse size.
sensitive motor-overload protection with thermal
memory retention.
Related information
5.2 Cable requirements 9.2.1.1 Supply voltage

5.2.1 Cable cross-section 5.3.1 Single-phase supply voltage

1 × 200-240 V-10 % / +10 %, 50/60 Hz, PE
DANGER Make sure the supply voltage and frequency
Electric shock correspond to the values stated on the nameplate.
Death or serious personal injury
‐ Always comply with local regulations If you want to supply the motor through an
regarding cable cross-sections. IT network, make sure you have a suitable
motor variant. If you are in doubt, contact
1 × 200-230 V Grundfos.

Cross section The wires in the motor terminal box must be as short
Power Conductor
as possible. Excepted from this is the separated earth
[kW] type [mm2] [AWG] conductor which must be so long that it is the last one
Solid 1.5 - 2.5 16-12 to be disconnected in case the cable is inadvertently
0.25 - 1.5 pulled out of the cable entry.
Stranded 1.5 - 2.5 16-12 For maximum backup fuse, see the section on supply
voltage.
3 × 380-500 V

Power Conductor Cross section

[kW] type [mm2] [AWG]
Solid 1.5 - 10 16-8
0.25 - 2.2
Stranded 1.5 - 10 16-8
Solid 2.5 - 10 14-8
3.0 - 11
Stranded 2.5 - 10 14-8

9
English (GB)

1 Only the following motors can be supplied through an

IT network:
N N
• Motors with a speed of 2900-4000 rpm or
4000-5900 rpm and up to 3 hp (2.2 kW).

TM078919
L L
PE
Corner earthing is not allowed for supply
voltages above 3 × 240 V and 3 × 480 V,
Example of a mains-connected motor with a main 60 Hz.
switch, backup fuse and additional protection

L1 L1
Pos. Description L2 L2

TM078920
L3 L3
1 RCD, type B PE

Example of a power supply-connected motor with a

power switch, backup fuses
TM053494

PE
L
N

Mains connection, single-phase motors

TM053495
L3
Related information L2
L1
9.2.1.1 Supply voltage PE

5.3.2 Three-phase supply voltage Power supply connection, three-phase motors

Three-phase motors are available for the following
voltages:
Related information
• 3 × 440-480 V -10 % / +10 %, 60 Hz, PE
9.2.2.1 Supply voltage
• 3 × 200-240 V -10 % / +10 %, 60 Hz, PE.
Make sure the supply voltage and frequency 5.4 Additional protection
correspond to the values stated on the nameplate.
DANGER
The wires in the motor terminal box must be as short
Electric shock
as possible. Excepted from this is the separated earth
Death or serious personal injury
conductor which must be so long that it is the last one
to be disconnected in case the cable is inadvertently ‐ Only use residual-current circuit
pulled out of the cable entry. breakers (ELCB, GFCI, RCD) of type
B.
To avoid loose connections, make sure you have
pressed home the terminal block for L1, L2 and L3 The residual-current circuit breaker must be marked
in its socket when you connect the power cable. with the following symbol:
For maximum backup fuse, see the section on supply
voltage.

If you want to supply the motor through an

IT network, make sure you have a suitable
motor variant. If you are in doubt, contact
Grundfos.

10
 English (GB)
The total leakage current of all the electrical Related information
equipment in the installation must be taken into 9.4 Other technical data
account. You find the leakage current of the motor in
the sections on leakage current and leakage current 5.5.1 Connection terminals, CRE, CRIE, CRNE,
(AC). SPKE and MTRE pumps
This product can cause a direct current in the The CRE, CRIE, CRNE, SPKE and MTRE pumps
protective earth conductor. have a number of inputs and outputs enabling the
pumps to be used in advanced applications where
Overvoltage and undervoltage protection many inputs and outputs are required.
Overvoltage and undervoltage may occur in case The pumps have the following connections:
of unstable power supply or faulty installation. The
• three analog inputs
motor stops if the voltage falls outside the permissible
voltage range. The motor restarts automatically when • one analog output
the voltage is again within the permissible voltage • two dedicated digital inputs
range. Therefore, no additional protection relay is • two configurable digital inputs or open-collector
required. outputs
The motor is protected against transients • Grundfos Digital Sensor input and output
from the power supply according to EN • two Pt100/1000 inputs
61800-3. In areas with high lightning • two LiqTec sensor inputs
intensity, we recommend external lightning • two signal relay outputs
protection.
• GENIbus connection.
Overload protection See the figure below.
If the upper load limit is exceeded, the motor Digital input 1 is factory-set to be start-stop
automatically compensates for it by reducing the input where open circuit results in stop. A
speed and stops if the overload condition persists. jumper is factory-fitted between terminals
The motor remains stopped for a set period. After this 2 and 6. Remove the jumper if digital input
period, the motor automatically attempts to restart. 1 is to be used as external start-stop or
The overload protection prevents damage to the any other external function.
motor. Consequently, no additional motor protection
is required. DANGER
Electric shock
Overtemperature protection Death or serious personal injury
The electronic unit has a built-in temperature sensor ‐ Make sure that the wires to be
as an additional protection. When the temperature connected to the connection groups
rises above a certain level, the motor automatically below are separated from each other
compensates for it by reducing the speed and stops by reinforced insulation in their entire
if the temperature keeps rising. The motor remains lengths.
stopped for a set period. After this period, the motor
automatically attempts to restart.

Protection against phase unbalance

Three-phase motors must be connected to a power
supply with a quality corresponding to IEC 60146-1-1,
class C, to ensure correct motor operation at
phase unbalance. This also ensures long life of the
components.

Related information
9.2.1.2 Leakage current
9.2.2.2 Leakage current (AC)

5.5 Connection terminals

The descriptions and terminal overviews in this
section apply to both single- and three-phase motors.
For maximum torques, see the section on other
technical data.

11
English (GB)

• Inputs and outputs

All inputs and outputs are internally separated from
the mains-conducting parts by reinforced insulation,
and galvanically separated from other circuits. All
control terminals are supplied with protective extra-
low voltage (PELV), thus ensuring protection against
electric shock.
• Signal relay outputs
- Signal relay 1:
LIVE:
You can connect supply voltages up to
250 VAC. PELV: The output is galvanically NC
separated from other circuits. Therefore, you C1
can connect the supply voltage or protective NO

extra-low voltage to the output as desired. NC

C2
- Signal relay 2:
NO
PELV: OC 18 GND
DI
+24 V*
The output is galvanically separated from other 11 DI4/OC2

circuits. Therefore, you can connect the supply 19 Pt100/1000

17 Pt100/1000
voltage or protective extra-low voltage to the 12 AO
output as desired. +24 V* +24 V* +24 V*/5 V* + + +5 V* 9 GND
14
• Mains supply (terminals N, PE, L or L1, L2, L3, AI3
1 DI2
PE).
21 LiqTec
20 GND
22 LiqTec
OC DI
+24 V* GND
10 DI3/OC1
4 AI1
+24 V* +24 V* +24 V*/5 V* 2 DI1
+ +
5 +5 V
6 GND
A GENIbus A
Y GENIbus Y
B GENIbus B

3 GND
15 +24 V
8 +24 V
26 +5 V
23 GND
25 GDS TX

TM078921
+24 V* +24 V* +24 V*/5 V*
+ +
24 GDS RX
+5 V* 7 AI2

Connection terminals, CRE, CRIE, CRNE, SPKE

and MTRE pumps

*If you use an external supply source, there must be

a connection to GND.

12
 English (GB)
Terminal Type Function Terminal Type Function
Normally closed Supply to
NC
contact 5 +5 V potentiometer and
Signal relay 1 sensor
C1 Common
(LIVE or PELV) 6 GND Ground
Normally open
NO
contact A GENIbus, A GENIbus, A (+)
Normally closed Y GENIbus, Y GENIbus, GND
NC
contact
Signal relay 2 B GENIbus, B GENIbus, B (-)
C2 Common
(PELV only) 3 GND Ground
Normally open
NO 15 +24 V Supply
contact
8 +24 V Supply
18 GND Ground
Supply to
Digital input/output,
26 +5 V potentiometer and
configurable
sensor
11 DI4/OC2 Open collector: Max.
24 V resistive or 23 GND Ground
inductive Grundfos Digital
25 GDS TX
Pt100/1000 Pt100/1000 sensor Sensor output
19
input 2 input Grundfos Digital
24 GDS RX
Pt100/1000 Pt100/1000 sensor Sensor input
17
input 1 input Analog input:
Analog output: 0-20 mA / 4-20 mA
7 AI2
12 AO 0-20 mA / 4-20 mA 0.5 - 3.5 V / 0-5 V /
0-10 V 0-10 V

9 GND Ground
Analog input:
14 AI3 0-20 mA / 4-20 mA
0-10 V
Digital input,
1 DI2
configurable
LiqTec sensor LiqTec sensor input
21
input 1 (white conductor)
Ground (brown and
20 GND
black conductors)
LiqTec sensor LiqTec sensor input
22
input 2 (blue conductor)
Digital input/output,
configurable.
10 DI3/OC1 Open collector: Max.
24 V resistive or
inductive.
Analog input:
0-20 mA / 4-20 mA
4 AI1
0.5 - 3.5 V / 0-5 V /
0-10 V
Digital input,
2 DI1
configurable

13
English (GB)

5.5.2 Connection terminals, MTHE, CME pumps

The MTHE, CME pump has the following
connections:
• two analog inputs
• two digital inputs or one digital input and one
open-collector output
• Grundfos Digital Sensor input and output
• two signal relay outputs
• GENIbus connection. NC
C1
See the figure below. NO

NC
Digital input 1 is factory-set to be start-stop C2
input where open circuit results in stop. A OC DI
NO
+24 V* GND
jumper is factory-fitted between terminals 10 DI3/OC1
4 AI1
2 and 6. Remove the jumper if digital input +24 V* +24 V* +24 V*/5 V* 2 DI1
1 is to be used as external start-stop or + +
5 +5 V
any other external function. 6 GND
A GENIbus A
Y GENIbus Y
DANGER B GENIbus B
Electric shock 3 GND
Death or serious personal injury 15 +24 V

‐ Make sure that the wires to be 8 +24 V

26 +5 V
connected to the connection groups 23 GND
below are separated from each other +24 V* +24 V* +24 V*/5 V* 25 GDS TX

TM078922
+ +

by reinforced insulation in their entire +5 V*

24 GDS RX
7 AI2
lengths.

• Inputs and outputs

All inputs and outputs are internally separated from Connection terminals, MTHE, CME pump (optional
the mains-conducting parts by reinforced insulation, for CRE, CRIE, CRNE, SPKE and MTRE pumps)
and galvanically separated from other circuits. All
control terminals are supplied by protective extra- *If you use an external supply source, there must be
low voltage (PELV), thus ensuring protection against a connection to GND.
electric shock.
• Signal relay outputs
Terminal Type Function
- Signal relay 1:
LIVE: Normally
NC
closed contact
You can connect supply voltages up to 250
Signal relay 1
VAC to the output. PELV: The output is C1 Common
galvanically separated from other circuits. (LIVE or PELV)
Therefore, you can connect the supply voltage Normally open
NO
or protective extra-low voltage to the output as contact
desired. Normally
NC
- Signal relay 2: closed contact
PELV: Signal relay 2
C2 Common
The output is galvanically separated from other (PELV only)
circuits. Therefore, you can connect the supply Normally open
NO
voltage or protective extra-low voltage to the contact
output as desired. Digital input/output,
• Mains supply (terminals N, PE, L or L1, L2, L3, configurable
10 DI3/OC1
PE). Open collector: max. 24
V resistive or inductive
Analog input:
0-20 mA / 4-20 mA
4 AI1
0.5 - 3.5 V / 0-5 V /
0-10 V

14
 English (GB)
Terminal Type Function 5.7 Bus connection cable
Digital input, 5.7.1 Connecting a 3-core bus cable, GENIbus
2 DI1
configurable For the bus connection, use a screened 3-core cable
Supply to potentiometer with a cross-sectional area of minimum 0.5 mm2 and
5 +5 V
and sensor maximum 1.5 mm2.
6 GND Ground • If the motor is connected to a unit with a cable
clamp identical to the one on the product, connect
A GENIbus, A GENIbus, A (+) the screen to the cable clamp.
Y GENIbus, Y GENIbus, GND • If the unit has no cable clamp, leave the screen
unconnected at this end.
B GENIbus, B GENIbus, B (-)
3 GND Ground
15 +24 V Supply
A A
8 +24 V Supply Y Y
B B

TM070223
Supply to potentiometer
26 +5 V
and sensor
23 GND Ground
Grundfos Digital Sensor 5.7.2 Replacing a motor
25 GDS TX
output If a 2-core cable is used in the installation, connect it
as shown in the figure below.
Grundfos Digital Sensor
24 GDS RX
input M

Analog input:
0-20 mA / 4-20 mA A 1 1 A
7 AI2 Y Y

TM079070
2
0.5 - 3.5 V / 0-5 V / B
2
B
0-10 V

5.6 Signal cables

Connection with screened 2-core cable
Use screened cables with a cross-sectional area of
minimum 0.5 mm2 and maximum 1.5 mm2 for the
external on/off switch, digital inputs, setpoint and Pos. Description
sensor signals.
M Motor
The wires in the motor terminal box must be as short
as possible.
If a screened 3-core cable is used in the installation,
5.6.1 Connecting signal cables follow the instructions in the section on connecting a
1. Connect the screens of the cables to the frame 3-core bus cable.
at both ends with good connection. The screens
Related information
must be as close as possible to the terminals.
5.7.1 Connecting a 3-core bus cable, GENIbus

5.8 Signal relays

The motor has two outputs for potential-free signals
via two internal relays. You can set the signal outputs
to Operation, Pump running, Ready, Alarm and
Warning.
The functions of the two signal relays are shown
in the table below.
TM021325

2. Connect the signal cables to the terminals.

3. Tighten the terminal screws.

15
English (GB)

Grundfos Eye is off

The power is off.

Operation Pump running Ready Alarm Warning Operating mode

C NO NC C NO NC C NO NC C NO NC C NO NC

Grundfos Eye is rotating green

The pump runs in Normal mode in open or closed loop.

Operation Pump running Ready Alarm Warning Operating mode

Normal
Min.
or
C NO NC C NO NC C NO NC C NO NC C NO NC Max.

Grundfos Eye is rotating green

The pump runs in Manual mode.

Operation Pump running Ready Alarm Warning Operating mode

Manual

C NO NC C NO NC C NO NC C NO NC C NO NC

Grundfos Eye is permanently green

The pump is ready for operation but is not running.

Operation Pump running Ready Alarm Warning Operating mode

Stop

C NO NC C NO NC C NO NC C NO NC C NO NC

16
 English (GB)
Grundfos Eye is rotating yellow
There is a warning, but the pump is running.

Operation Pump running Ready Alarm Warning Operating mode

Normal
Min.
or
C NO NC C NO NC C NO NC C NO NC C NO NC Max.

Grundfos Eye is rotating yellow

There is a warning, but the pump is running.

Operation Pump running Ready Alarm Warning Operating mode

Manual

C NO NC C NO NC C NO NC C NO NC C NO NC

Grundfos Eye is permanently yellow

There is a warning, and the pump is stopped via a Stop command.

Operation Pump running Ready Alarm Warning Operating mode

Stop

C NO NC C NO NC C NO NC C NO NC C NO NC

Grundfos Eye is rotating red

There is an alarm, but the pump is running.

Operation Pump running Ready Alarm Warning Operating mode

Normal
Min.
or
C NO NC C NO NC C NO NC C NO NC C NO NC Max.

17
English (GB)

Grundfos Eye is rotating red

There is an alarm, but the pump is running.

Operation Pump running Ready Alarm Warning Operating mode

Manual

C NO NC C NO NC C NO NC C NO NC C NO NC

Grundfos Eye is flashing red

The pump is stopped due to an alarm.

Operation Pump running Ready Alarm Warning Operating mode

Stop

C NO NC C NO NC C NO NC C NO NC C NO NC

6. Control functions If the power supply to the pump is switched off, the
settings are stored.
6.1 User interfaces Related information
WARNING 6.2 Standard operating panel
Hot surface 6.3 Advanced operating panel
Death or serious personal injury
6.4 Grundfos GO
‐ Only touch the buttons on the display
as the product may be very hot. 7.2 Setpoint

DANGER
Electric shock
Death or serious personal injury
‐ If the operating panel is cracked or
perforated, replace it immediately.
Contact the nearest Grundfos sales
company.

You can change the pump settings by the following

user interfaces:

Operating panels
• Standard operating panel.
• Advanced operating panel.

Remote controls
• Grundfos GO
• Grundfos R100 remote control. See the section on
description of functions starting with the section
on setpoint.

18
 English (GB)
6.2 Standard operating panel 6.2.1 Setting the setpoint in constant parameter
mode

The following applies for motors set to operate in

Const. other val.
1 Set the desired setpoint by pressing the Up or Down
buttons.

2 The green light fields on the operating panel indicate

the setpoint set.

The following example applies to a pump or motor

in an application where a pressure sensor gives a
feedback to the pump or motor. The sensor has
3 been set manually, and the pump or motor does not
automatically register a connected sensor.
Light fields 5 and 6 are activated, indicating a desired
setpoint of 3 bar with a sensor measuring range from
4
0 to 6 bar. The setting range is equal to the sensor
Stop measuring range.
5
1
TM054848

Pos. Symbol Description

Grundfos Eye: The indicator light
1 shows the operating status of the 3
product.
Light fields for indication of the
2 -
setpoint

TM054894
Up/Down: The buttons change the
3
setpoint.
0
Radio communication: The button
enables radio communication with Related information
4
the Grundfos GO and other products
of the same type. 7.8 Analog inputs

Start/Stop: Press the button to 6.2.2 Setting the setpoint in constant curve mode
make the product ready for Set the desired setpoint by pressing the Up or Down
operation or to start and stop the buttons.
product.
The green light fields on the operating panel indicate
Start: If you press the button when
the setpoint set.
the product is stopped, the product
5 starts if no other functions with Example: In Constant curve mode, the motor output
higher priority have been enabled. is between minimum and maximum speed defined by
Stop: If you press the button when Operating range.
the product is running, the product
always stops. When you press the
button, the stop icon appears at the
bottom of the display.

Related information
6.5 Grundfos Eye
7.1 Priority of settings

19
English (GB)

6.2.5 Starting the pump

H
How you start the pump depends on how it was
Max. stopped.
Start the pump in one of the following ways:
• If the pump was stopped by pressing the Start/
Stop button, start the pump by pressing the Start/
Stop button.
• If the pump was stopped by pressing and holding
the Down button, start the pump by pressing and
holding the Up button.
6.2.6 Stopping the pump
Stop the pump in one of the following ways:
• Press the Start/Stop button.
Min. • Press and hold the Down button until all light
fields are off.
Q
TM054895 • Use the Grundfos GO.
• Use a digital input set to External stop.

Related information
6.2.3 Setting to maximum speed 7.1 Priority of settings
The motor must not be in operating mode Stop. 6.2.7 Resetting alarms and warnings in products
• Press and hold the Up button until the top light with a standard operating panel
field is on and starts flashing. You can reset a fault indication in one of the following
ways:
H
• Briefly press the Up or Down button.
This is not possible if the buttons have been
locked.
This does not change the setting of the motor.
• Switch off the power supply until the indicator
lights are off.
• Switch the external start and stop input off, and
then on again.
TM054896

• Use the Grundfos GO.

Q • Use the digital input if you have set it to Alarm
resetting.
6.2.4 Setting to minimum speed

The motor must not be in operating mode Stop.

• Press and hold the Down button until the bottom
light field is on and starts flashing.

H
TM054897

20
 English (GB)
6.3 Advanced operating panel Pos. Symbol Description
Left/Right: Press the buttons to
navigate between main menus,
1 displays and digits. When you
change the menu, the display shows
the top display of the new menu.
Up/Down:
2 Press the buttons to navigate
between submenus or change the
value settings.
If you have disabled the possibility
6 3 to make settings with the Enable/
disable settings function, you can
4
enable it again temporarily by
5 pressing these buttons
simultaneously for at least 5
TM054849 seconds.
OK:
4 Press the button to do the following:
• save changed values, reset
Pos. Symbol Description
alarms and expand the value
Grundfos Eye: field
1 The indicator light shows the • enable radio communication with
operating status of the product. the Grundfos GO and other
products of the same type.
2 - Graphical colour display.
When you try to establish radio
Back: communication between the product
3 Press the button to go one step and the Grundfos GO or another
back. product, the green indicator light in
the Grundfos Eye flashes. In the
controller display, a note states that
a wireless device wants to connect
to the product. Press OK on the
product operating panel to allow
radio communication with the
Grundfos GO and other products of
the same type.
Start/Stop: Press the button to
make the product ready for
operation or to start and stop the
product. Start: If you press the
button when the product is stopped,
the product starts if no other
5
functions with higher priority have
been enabled. Stop: If you press the
button when the product is running,
the product always stops. When you
press the button, the stop icon
appears at the bottom of the display.
Home: Press the button to go to the
6
Home menu.

21
English (GB)

Related information 6.3.1 Home display

6.5 Grundfos Eye
1 2 3 4
7.1 Priority of settings
7.34 Enable/disable settings

Home Status Settings Assist

Setpoint Control mode

5.00 bar Const. pressure

Operating mode Actual controlled value

Normal
4.90 bar

TM064516
1 2
9 8 7 6 5

Example of Home display

Status

Pos. Symbol Description Setpoint Contro

Home
5.00 bar
This menu shows up to four user-
Con
defined parameters. You can select
1 parameters shown as shortcut icon
Operaring mode
, and when pressing you go Actual
directly to the Settings display for
Normal
the selected parameter.
4.
Status
2 - This menu shows the status of the
pump and system, as well as
warnings and alarms.
Settings
This menu gives access to all 9 8 7 6
setting parameters. You can make
3 -
detailed settings of the pump in this
menu. 1 2
See the section on the setpoint.
Assist 1 2
This menu enables assisted pump Status
setup, provides a short description
4 - Setpoint Contro
of the control modes and 1offers 2 3

fault advice. Status

5.00 bar
See the section on assist.
Setpoint Setpoint
Con
Status Settings Assist

Control modeContro
It indicates that the pump has5.00been
bar Const. pressure
5
5.00 bar
stopped via the button. Operaring mode
Operaring mode
Normal
Actual
Con
Actual controlled value

It indicates that the pump is 4.90 bar

Normal
6 functioning as master pump in a
multipump system.Operaring mode Actual 4.
9 8 7 6 5

Normal
4.
22
 Status Settings Assist
1 2 3

English (GB)
Setpoint Control mode

Pos. Symbol Description 5.00 bar Const. pressure

Status Settings Assist
It indicates that the pump is
7 functioning as 1aSetpoint
slave pump in a 2
Control 3
mode
multipump system.Operaring mode Actual controlled value
5.00 bar
It indicates that the pump is
Normal
Const. pressure

8
operating in a multipump system.
See the section on Multipump
4.90 bar
Status Settings Assist

setup (Setup ofOperaring

multipumpmode
Setpoint Control
Actual mode value
controlled
system).
5.00 bar
Normal
It indicates that the possibility to
Const. pressure
4.90 bar
change settings has been disabled
9 for protective reasons. See the 9 8 7 6 5
section on Buttons on product
Operaring mode Actual controlled value
(Enable/disable settings).
Normal
Related information
4.90 bar
9 8 7 6 5
7.34 Enable/disable settings
7.49 Setup of multipump system
6.3.2 Startup guide
The function is only available in the advanced
operating panel. 9 8 7 6 5
The startup guide starts at the first startup and guides
you through the settings needed for the product to
operate in the given application. When the startup
guide is completed, the main menus appear on the
display.
You can always run the startup guide at a later time.

Related information
7.42 Run start-up guide

23
English (GB)

6.3.3 Menu overview for the advanced operating

panel
6.3.3.1 Home

CRE, CRIE, CRNE,

Home MTHE, CME Multipump system
SPKE, MTRE
● ● ●

6.3.3.2 Status

CRE, CRIE,
Multipump
Status CRNE, SPKE, MTHE, CME
system
MTRE
Operating status ● ● ●
Operating mode, from ● ● ●
Control mode ● ● ●
Pump performance ● ● ●
Actual control. value ● ● ●
Resulting setpoint ● ● ●
Speed ● ● ●
Acc. flow and specific energy ● ● ●
Power and energy consumption ● ● ●
Measured values ● ● ●
Analog input 1 ● ● ●
Analog input 2 ● ● ●
Analog input 3 ● ● 1) ● 1)
Pt100/1000 input 1 ● ● 1) ● 1)
Pt100/1000 input 2 ● ● 1) ● 1)
Analog output ● ● 1) ● 1)
Warning and alarm ● ● ●
Actual warning or alarm ● ● ●
Warning log ● ● ●
Alarm log ● ● ●
Operating log ● ● ●
Operating hours ● ● ●
Fitted modules ● ● ●
Date and time ● ● ●
Product identification ● ● ●
Motor bearing monitoring ● ● ●
Multi-pump system ●

24
 English (GB)
CRE, CRIE,
Multipump
Status CRNE, SPKE, MTHE, CME
system
MTRE
System operating status ●
System performance ●
System input power and energy ●
Pump 1, multi-pump system ●
Pump 2, multi-pump system ●
Pump 3, multi-pump system ●
Pump 4, multi-pump system ●

1) It is only available if an advanced functional module, type FM 300, is fitted.

6.3.3.3 Settings

CRE, CRIE,
Multipump
Settings CRNE, SPKE, MTHE, CME
system
MTRE
Setpoint ● ● ●
Operating mode ● ● ●
Set manual speed ● ● ●
Set user-defined speed ● ● ●
Control mode ● ● ●
Setting the proportional pressure ● ● ●
Analog inputs ● ● ●
Analog input 1, setup ● ● ●
Analog input 2, setup ● ● ●
Analog input 3, setup ● ● 2) ● 2)
Pt100/1000 inputs ● ● 2) ● 2)
Pt100/1000 input 1, setup ● ● 2) ● 2)
Pt100/1000 input 2, setup ● ● 2) ● 2)
Digital inputs ● ● ●
Digital input 1, setup ● ● ●
Digital input 2, setup ● ● 2) ● 2)
Digital inputs/outputs ● ● ●
Digital input/output 3, setup ● ● ●
Digital input/output 4, setup ● ● 2) ● 2)
"Signal relays" 1 and 2 (Relay outputs) ● ● ●
Relay output 1 ● ● ●
Relay output 2 ● ● ●
Analog output ● ● 2) ● 2)

25
English (GB)

CRE, CRIE,
Multipump
Settings CRNE, SPKE, MTHE, CME
system
MTRE
Output signal ● ● 2) ● 2)
Function of analog output ● ● 2) ● 2)
Controller settings ● ● ●
Operating range ● ● ●
Setpoint influence ● ● ●
External setpoint function ● ● ●
Predefined setpoints ● ● 2) ● 2)
Monitoring functions ● ● ●
Motor bearing monitoring ● ● ●
Motor bearing maintenance ● ● ●
Limit-exceeded function ● ● ●
LiqTec function ● ● ●
Alarm handling ● ● ●
Special functions ● ● ●
Stop function (Low-flow stop function) ● ● ●
Stop at min. speed ● ● ●
Pipe filling function ● ● ●
Pulse flowmeter setup ● ● ●
Ramps ● ● ●
Standstill heating ● ● ●
Communication ● ● ●
Pump number ● ● ●
Enable/disable radio communication ● ● ●
General settings ● ● ●
Language ● ● ●
Set date and time ● ● ●
Units ● ● ●
Enable/disable settings ● ● ●
Delete history ● ● ●
Define Home display ● ● ●
Display settings ● ● ●
Store actual settings ● ● ●
Recall stored settings ● ● ●
Run start-up guide ● ● ●

2) It is only available if an advanced functional module, type FM 300, is fitted.

26
 English (GB)
6.3.3.4 Assist

CRE, CRIE, CRNE,

Assist MTHE, CME Multipump system
SPKE, MTRE
Assisted pump setup ● ● ●
Setup, analog input ● ● ●
Setting of date and
● ● ●
time
Setup of multipump
● ● ●
system
Description of control
● ● ●
mode
Assisted fault advice ● ● ●

6.4 Grundfos GO 6.4.1 Communication

The product is designed for wireless radio or infrared When the Grundfos GO initiates communication with
communication with the Grundfos GO. the product, the indicator light in the centre of the
Grundfos Eye flashes green.
The Grundfos GO enables you to set functions
and gives you access to status overviews, On products fitted with an advanced operating panel,
technical product information and current operating the display indicates that a wireless device is trying
parameters. 1
to connect to the product. Press OK on the operating 2 3
panel to connect the product with the Grundfos GO,
Use the Grundfos GO together with the following
or press the Home button to reject connection.
mobile interface:
Grundfos MI 301. Status Sett
Symbol Description
Setpoint Control mod
Press OK on the operating panel to
connect the product with the Grundfos
GO. 5.00 bar Const. pr

Press the Home button to reject

connection.
Operaring mode Actual contro

Normal
You can choose between the following
communication types: 4.90
• radio communication
1
• infrared communication.

Related information

+ 6.5 Grundfos Eye

9 8 7 6 5
6.4.1.1 Radio communication
TM066256

Radio communication can take place at distances

up to 30 metres. The first time the Grundfos
GO communicates with the product, you
enable communication by pressing the Radio
communication button or OK on the operating
Pos. Description panel.
Grundfos MI 301: Later when communication takes place, the product is
recognised by the Grundfos GO, and you can select
It is a separate module enabling radio or
1 the product from the List menu.
infrared communication. Use the module
together with an Android or iOS-based smart 6.4.1.2 Infrared communication
device via a Bluetooth connection.
Infrared communication can take place at distances
up to 2 m.

27
English (GB)

When communicating via infrared light, the Grundfos

GO must be pointed at the operating panel of the
product.

6.4.2 Menu overview for the Grundfos GO

CRE, CRIE, CRNE,

Dashboard CME Multipump system
SPKE, MTRE
● ● ●

CRE, CRIE, CRNE,

Status CME Multipump system
SPKE, MTRE
System mode ● 3)

Resulting setpoint ● ●
Resulting system setpoint ● 3)
Actual controlled value ● ● ● 3)
Motor speed ● ●
Power consumption ● ●
Power cons., system ● 3)
Energy consumption ● ●
Energy cons., system ● 3)
Acc. flow, specific energy ● ● ● 3)
Operating hours ● ●
Operating hours, system ● 3)
Pt100/1000 input 1 ● ● 4)

Pt100/1000 input 2 ● ● 4)
Analog output ● ● 4)
Analog input 1 ● ●
Analog input 2 ● ●
Analog input 3 ● ● 4)
Digital input 1 ● ●
Digital input 2 ● ● 4)
Digital in/output 3 ● ●
Digital in/output 4 ● ● 4)
Fitted modules ● ●
Pump 1 ● 3)

28
 English (GB)
CRE, CRIE, CRNE,
Status CME Multipump system
SPKE, MTRE
Pump 2 ● 3)
Pump 3 ● 3)
Pump 4 ● 3)

3) It is only available if the Grundfos GO is connected to a multipump system.

4) It is only available if an advanced functional module, type FM 300, is fitted.

CRE, CRIE, CRNE,

Settings CME Multipump system
SPKE, MTRE
Setpoint ● ● ●
Operating mode ● ● ●
Set user-defined speed ● ● ●
Control mode ● ● ●
Setting the proportional pressure ● ● ●
Pipe filling function ● ● ●
Enable/disable settings ● ●
LiqTec function ● ● 4)
"Stop function" (Lowflow stop
● ● ●
function)
Stop at min. speed ● ● ●
Controller settings ● ● ●
Operating range ● ● ●
Ramps ● ●
Pump number ● ●
Enable/disable radio comm. ● ●
Analog input 1 ● ●
Analog input 2 ● ●
Analog input 3 ● ● 4)
Pt100/1000 input 1 ● ● 4)
Pt100/1000 input 2 ● ● 4)
Digital input 1 ● ●
Digital input 2 ● ● 4)
Digital in/output 3 ● ●
Digital in/output 4 ● ● 4)
Pulse flowmeter setup ● ●
Predefined setpoints ● ● ●
Analog output ● ● 4)
External setpoint function ● ●
Signal relay 1 ● ●

29
English (GB)

CRE, CRIE, CRNE,

Settings CME Multipump system
SPKE, MTRE
Signal relay 2 ● ●
Limit 1 exceeded ● ● ●
Limit 2 exceeded ● ● ●
Alternating operation, time ● 3)
Sensor to be used ● 3)
Time for pump changeover ● 3) 4)

Standstill heating ● ●
Alarm handling ● ● ●
Motor bearing monitoring ● ●
Service ● ●
Set date and time ● ● 4)
Store actual settings ● ●
Recall stored settings ● ●
Undo ● ● ●
Pump name ● ● ●
Connection code ● ● ●
Units ● ●

3) It is only available if the Grundfos GO is connected to a multipump system.

4) It is only available if an advanced functional module, type FM 300, is fitted.

CRE, CRIE, CRNE,

Alarms and warnings CME Multipump system
SPKE, MTRE
Alarm log ● ● ●
Warning log ● ● ●
"Reset alarm" button ● ● ●

CRE, CRIE, CRNE,

Assist CME Multipump system
SPKE, MTRE
Assisted pump setup ● ●
Assisted fault advice ● ● ●
Setup of multipump system ● ● ●

30
 English (GB)
6.5 Grundfos Eye
The operating condition of the pump is indicated by A
the Grundfos Eye on the operating panel.

TM055993
Grundfos Eye indicator light (A)

Indicator light Indication Description

Power off
No lights are on.
The motor is not running.

Power on
Two opposite green
indicator lights are The motor is running. The indicator lights are rotating
rotating. in the direction of rotation of the motor when seen from
the non-drive end.

Two opposite green Power on

indicator lights are
permanently on. The motor is not running.

Warning
One yellow indicator light The motor is running. The indicator light is rotating in
is rotating. the direction of rotation of the motor when seen from
the non-drive end.

One yellow indicator light Warning

is permanently on. The motor has stopped.

Two opposite red indicator Alarm

lights are flashing
simultaneously. The motor has stopped.

31
English (GB)

Indicator light Indication Description

The green indicator light in The Grundfos Eye flashes four times when you press
the middle flashes quickly the Grundfos Eye symbol next to the motor name in
four times. the Grundfos GO.

The green indicator light in

You have selected the motor in the Grundfos GO, and
the middle is flashing
the motor is ready to be connected.
continuously.

The green indicator light in

The motor is controlled by the Grundfos GO or
the middle flashes quickly
exchanging data with the Grundfos GO.
for a few seconds.

The green indicator light in

the middle is permanently The motor is connected to the Grundfos GO.
on.

32
 English (GB)
6.6 Bus signal 1. Loosen the four screws (A) and remove the
terminal box cover (B).
The pump supports serial communication via an
RS-485 input. The communication is carried out
according to the Grundfos GENIbus protocol and
enables connection to other pumps as well as a
building management system or another external
A
control system.
Via a bus signal, you can set pump operating
parameters remotely, such as setpoint and operating
mode. At the same time, via the bus, the pump
can provide status information about important
parameters, such as the actual value of the control
parameter, input power and fault indications. B
Contact Grundfos for further information.

If you use a bus signal, the number of

settings available via the R100 or the

TM064081
Grundfos GO are reduced.

6.7 Installing a communication interface

module 2. Remove the CIM (Communication Interface
Module) cover (C1) by pressing the locking tab
DANGER (D) and lifting the end of the cover (C2). Then lift
Electric shock the cover off the hooks (C3).
Death or serious personal injury
‐ Switch off the power supply to the
product including the power supply for
C3
the signal relays. Wait at least 5
minutes before you make any
connections in the terminal box. Make C2
sure that the power supply cannot be
switched on accidentally.

Use an antistatic service kit when handling D

electronic components. This prevents
static electricity from damaging the
components.
TM069905
C1
TM064462

33
English (GB)

3. Remove the screw (E). 7. Connect the cable screens of the bus cables to
protective earth via one of the earth clamps (H).

H
TM069906

TM069908
4. Fit the module by aligning it with the three plastic
holders (F) and the connection plug (G). Press the
module home, using your fingers.

F
G
TM069907

5. Fit and tighten the screw (E) to 1.3 Nm.

6. Make the electrical connections to the module

as described in the instructions supplied with the
module.

34
 English (GB)
8. Route the wires for the module through one of the 10. If the module is supplied with an FCC label, fix the
cable glands. label on the terminal box.

TM069909
TM064085

FCC
11. Fit the terminal cover and cross-tighten the four
MGE 71, 80, 90 mounting screws to 6 Nm.

Make sure that the terminal box cover

is aligned with the orientation of the
operating panel.

Related information
6.10 Changing the position of the operating panel

6.8 Identification of the functional module

You can identify the fitted module in one of the
following ways:

Grundfos GO
You can identify the functional module in the Fitted
modules menu under Status.

Motor display
TM070190

For motors fitted with the advanced operating panel,

you can identify the functional module in the Fitted
modules menu under Status.
MGE 100, 112, 132, 160

9. Fit the CIM cover.

35
English (GB)

Motor nameplate Motor nameplate

You can identify the fitted module by the data on the You can identify the operating panel by the data on
motor nameplate. the motor nameplate.

VARIANT VARIANT
Type : P.C. : INPUT
Hp PB :
OUTPUT VARIANT Type : P.C. : INPUT
Hp PB :
OUTPUT VARIANT
P.N. : Serial no : U in : P2 :
rpm FM :
Hp PB : P.N. : Serial no : U in : P2 :
rpm FM :
Hp PB :

Xxxxxxxxxxx

Xxxxxxxxxxx
E.P. Motor

E.P. Motor
DE : Env.Type : TEFC ~ V n max: rpm FM : DE : Env.Type : TEFC ~ V n max: rpm FM :

HMI : HMI :
NDE: SF : CL: f in : Hz Eff : HMI : Made in Hungary NDE: SF : CL: f in : Hz Eff : HMI : Made in Hungary
Wgt : kg Tamb : F PF: I SF Amp: A I 1/ 1 : A CIM : Wgt : kg Tamb : F PF: I SF Amp: A I 1/ 1 : A CIM :

CIM :
DK - 8850 Bjerringbro, Denmark

CIM :
DK - 8850 Bjerringbro, Denmark

TM061889

TM064013
Functional module variants Operating panel variants

Variant Designation Variant Designation

FM 100 Basic functional module HMI 100 Basic operating panel
FM 200 Standard functional module Basic operating panel for motors without a
HMI 101
FM 300 Advanced functional module radio module
HMI 200 Standard operating panel
6.9 Identification of the operating panel Standard operating panel for motors
HMI 201
You can identify the operating panel in one of the without a radio module
following ways:
HMI 300 Advanced operating panel
Grundfos GO Advanced operating panel for motors
HMI 301
You can identify the operating panel in the Fitted without a radio module
modules menu under Status.

Motor display 6.10 Changing the position of the operating

For motors fitted with the advanced operating panel, panel
you can identify the operating panel in the Fitted
modules menu under Status. DANGER
Electric shock
Death or serious personal injury
‐ Switch off the power supply to the
product including the power supply for
the signal relays. Wait at least 5
minutes before you make any
connections in the terminal box.

You can turn the operating panel 180°. Follow the

instructions.

36
 English (GB)
1. Loosen the four screws (TX25) of the terminal box 4. Turn the plastic cover 180°.
cover.

Do not twist the cable more than 90°.

180°

TM055354
TM064915 5. Position the plastic cover correctly over the four
rubber pins (C). Make sure that the locking tabs
(A) are placed correctly.

2. Remove the terminal box cover.

A
A

TM055355
C

6. Fit the terminal box cover and make sure that it is

turned 180° so that the buttons on the operating
panel are aligned with the buttons on the plastic
cover.

7. Tighten the four screws (TX25) with 5 Nm.

TM064926

3. Press and hold in the two locking tabs (A) while

gently lifting the plastic cover (B).

A
TM055353

TM064929

37
English (GB)

7. Setting the product If special or customised settings are required, use

the Grundfos PC Tool. Contact your local Grundfos
The description of settings applies both to pumps company for more information.
without factory-fitted sensor and to pumps with a
factory-fitted pressure sensor. 7.1 Priority of settings
Setpoint
With the Grundfos GO, you can set the motor to
You can set the desired setpoint in three ways: operate at maximum speed or to stop.
• on the pump operating panel If two or more functions are enabled at the same
• via an input for the external setpoint signal time, the motor operates according to the function
• with the Grundfos wireless R100 remote control or with the highest priority.
the Grundfos GO.
If you set the motor to maximum speed via the digital
Other settings input, the motor operating panel or the Grundfos GO
Make all other settings with the R100 or the Grundfos can only set the motor to Manual or Stop.
GO. The priority of the settings is shown in the table
You can read important parameters, such as the below.
actual value of the control parameter and power
consumption, via the R100 or the Grundfos GO.

Start/stop Grundfos GO or operating

Priority Digital input Bus communication
button panel
1 Stop
2 Stop 5)

3 Manual
Maximum speed 5)/User
4
defined speed
5 Stop
6 User defined speed
7 Stop
Maximum speed/User
8
defined speed
9 Minimum speed
10 Start
11 Maximum speed
12 Minimum speed
13 Minimum speed
14 Start
15 Start

5) Stop and Maximum speed settings made with the Grundfos GO or the operating panel can be overruled by another operating-
mode command sent from a bus, for example Start. If the bus communication is interrupted, the motor resumes its previous
operating mode, for example Stop, selected with the Grundfos GO or the operating panel.

7.2 Setpoint 7.3 Operating mode

You can set the setpoint for all control modes once Possible operating modes:
you select the desired control mode. • Normal: The pump runs according to the selected
control mode.
Related information
• Stop: The pump stops.
7.6 Control mode
7.52 Factory settings

38
 English (GB)
• Min.: You can use the minimum curve mode in 7.5 Set user-defined speed
periods in which a minimum flow is required.
Use this function to set the motor speed in
When operating according to the minimum curve,
percentage of the maximum speed. When you set the
the pump operates like an uncontrolled pump.
operating mode to User-defined speed, the motor
• Max.: You can use the maximum curve mode starts running at the set speed.
in periods in which a maximum flow is required.
When operating according to the maximum curve, 7.6 Control mode
the pump operates like an uncontrolled pump.
The possible control modes are the following:
• Manual: The pump operates at a manually set
speed. In Manual the setpoint via bus is over- • Proportional pressure
ruled. • Constant pressure (Const. pressure)
• User-defined speed: The motor operates at a • Constant temperature (Const. temp.)
speed set by the user. • Constant differential pressure (Con. diff. press.)
All operating modes are illustrated in the figure below. • Constant differential temperature (Con. diff.
temp.)
H • Constant flow rate (Const. flow rate)
• Constant level (Const. level)
Max.
1 • Constant other value (Const. other val.)
• Constant curve (Const. curve.):
Requires a measured differential pressure and
2
pump data entered into the controller.

Related information
Min. 3 7.7.5 Pump data
7.52 Factory settings
TM064024

7.6.1 Proportional pressure

Q The head of the pump is reduced at decreasing water
Stop
demand, and increased at rising water demand. See
Operating modes the figure below.
This control mode is especially suitable in systems
with relatively large pressure losses in the distribution
Pos. Description pipes. The head of the pump increases proportionally
to the flow in the system to compensate for the large
1 Normal
pressure losses in the distribution pipes.
2 Normal The setpoint can be set with an accuracy of 0.1 m.
3 Manual The head against a closed valve is half the setpoint.
The setting range is between 25 % and 90 % of the
maximum head.
Related information
For more information about settings, see the section
7.4 Set manual speed on proportional-pressure setup.
7.5 Set user-defined speed
7.52 Factory settings
H

7.4 Set manual speed

The function is only available in the advanced
operating panel. Hset
Use this function to set the speed in percentage of
the maximum speed. When you set the operating
mode to Manual, the product starts running at the set Hset
TM057909

speed. 2

With the Grundfos GO, you can set the speed via the Q
Setpoint menu.
Proportional pressure
Related information
7.52 Factory settings

39
English (GB)

Example: Related information

Factory-fitted differential-pressure sensor 7.14 Controller settings
7.46 Assisted pump setup
7.52 Factory settings

TM057880
Δp 7.6.3 Constant temperature
This control mode ensures a constant temperature.
It is a comfort control mode that can be used in
Proportional pressure domestic hot-water systems to control the flow rate
to maintain a constant temperature in the system.

Related information H
7.7.1 Control curve function
7.6.2 Constant pressure
t
We recommend this control mode if the pump is to
deliver a constant pressure, independently of the flow
rate in the system.

TM057900
H
Q

Constant temperature

This control mode requires either an internal or

external temperature sensor as shown in the
TM057901

examples below.
Example:
Q
One external temperature sensor
Constant pressure

This control mode requires an external pressure

sensor as shown in the examples below.
You can set the pressure sensor in the Assist menu.

TM057884
See the section on assisted pump setup.
The setting range is between 12.5 % and 100 % of t
the maximum head.
Example:
One external pressure sensor
t
TM057885
TM057881

p Related information
7.14 Controller settings
7.52 Factory settings
TM057882

7.6.4 Constant differential pressure

p
The pump maintains a constant differential pressure,
independently of the flow rate in the system. This
control mode is primarily suitable for systems with
relatively small pressure losses.

40
 English (GB)
H
p

TM057889
Δp

Related information

TM057901
7.14 Controller settings
Q 7.46 Assisted pump setup
7.52 Factory settings
Constant differential pressure
7.6.5 Constant differential temperature
The setting range is between 12.5 % and 100 % of The pump maintains a constant differential
the maximum head. This control mode requires either temperature in the system, and the pump
an internal or external differential-pressure sensor, performance is controlled according to this.
or two external pressure sensors as shown in the
examples below. H

Examples:
• One external differential-pressure sensor:
t
The pump uses the input from the sensor to
control the differential pressure.
You can set the sensor manually or via the Assist
menu. See the section on assisted pump setup.

TM057954
Q

Constant differential temperature

TM057886

Δp
This control mode requires either two temperature
sensors or one external differential-temperature
sensor. See the examples below.
The temperature sensors can either be analog
sensors connected to two of the analog inputs, or
two Pt100/1000 sensors connected to the Pt100/1000
TM057887

Δp inputs if these are available on the specific pump.

Set the sensor in the Assist menu under Assisted
pump setup. See the section on assisted pump
setup.
• Two external pressure sensors:
Examples:
Constant differential-pressure control is
achievable with two individual pressure sensors. • Two external temperature sensors:
The pump uses the inputs from the two sensors Constant differential-temperature control is
and calculates the differential pressure. achievable with two temperature sensors. The
The sensors must have the same unit and must pump uses the inputs from the two sensors and
be set as feedback sensors. You can set the calculates the differential temperature.
sensors manually, sensor by sensor, or via the The sensors must have the same unit and must
Assist menu. See the section on assisted pump be set as feedback sensors. You can set the
setup. sensors manually, sensor by sensor, or via the
Assist menu. See the section on assisted pump
Δp setup.
TM057888

p p

41
English (GB)

Related information
t 7.14 Controller settings
7.52 Factory settings

TM057894
Δt
7.6.7 Constant level
t
The pump maintains a constant level independently
• One external differential-temperature sensor: of the flow rate.
The pump uses the input from the sensor to H
control the differential temperature.
You can set the sensor manually or via the Assist
menu. See the section on assisted pump setup.

TM057931

TM057941
Δt

Related information Constant level

7.14 Controller settings
7.46 Assisted pump setup This control mode requires an external level sensor.
7.52 Factory settings The pump can control the level in a tank in two ways
7.6.6 Constant flow rate (see the figure above):
• as an emptying function where the pump draws
The pump maintains a constant flow rate in the
the liquid from the tank.
system independently of the head.
• as a filling function where the pump pumps the
liquid into the tank.
H
The type of level control function depends on the
setting of the built-in controller.
Examples:
• One external level sensor with emptying function

L
TM057955

Q TM057896
1

Constant flow rate • One external level sensor with filling function

L
This control mode requires an external flow sensor.
See the example below.
Example:
TM057965

One external flow sensor

Related information
TM057895

Q 7.14 Controller settings

7.52 Factory settings

Constant flow rate

42
 English (GB)
7.6.8 Constant other value 7.8 Analog inputs
Use this control mode to control a value not The available inputs depend on the functional module
available in the Control mode menu. To measure fitted in the pump:
the controlled value, connect a sensor to one of
the analog inputs. The controlled value is shown in
percentage of the sensor range. FM 200 6) FM 300 6)
Function (terminal)
(standard) (advanced)
Related information
Analog input 1,
7.52 Factory settings ● ●
setup (4)
7.6.9 Constant curve
Analog input 2,
You can set the pump to operate according to a ● ●
setup (7)
constant curve, like an uncontrolled pump.
Analog input 3,
The desired speed can be set in percentage of the - ●
setup (14)
maximum speed in the range from 13 to 100 %.
6) See the section on identification of the functional module.

H
If you want to set the analog input for a feedback
sensor, we recommend that you do this via the
Assisted pump setup menu. See the section on
assisted pump setup.
If you want to set an analog input for other purposes,
you can do this manually.
You can set the analog inputs via the Setup, analog
input menu. See the section on setup, analog input.
TM057957

If you make the manual setting via the Grundfos GO,

Q
you need to enter the menu for the analog input
under the Settings menu.
Constant curve Function
The analog inputs can be set to the following
Related information functions:
7.14 Controller settings • Not active
7.52 Factory settings • Feedback sensor: The sensor is used for the
selected control mode.
7.7 Setting the proportional pressure • Ext. setpoint infl.: See the section on the
external setpoint function.
7.7.1 Control curve function
• Other function.
You can set the proportional curve either to quadratic
or linear to match the system curve. Measured parameter
Select one of the parameters listed to be measured
7.7.2 Zero flow head
in the system by the sensor connected to the actual
You can set this value in percentage of the setpoint, analog input.
and define how much the setpoint must be reduced
at a closed valve. With a setting of 100 %, the control
mode is equal to the constant differential pressure.
7.7.3 Fixed inlet pressure
This menu enables the use of a fixed inlet pressure.
7.7.4 Inlet pressure
Enter the fixed inlet pressure that is to be supplied to
the pump.
7.7.5 Pump data
To enable the pump to operate in proportional
pressure, the controller needs to process the pump
curve. Enter the maximum head, rated head and
rated flow rate from the pump nameplate.

43
English (GB)

5 Electrical signal
11
1 DPT 3 13 6 14
Q Select signal type:
PT PT TT PT TT
• 0.5-3.5 V
2 4 12 8 16 15
7
DPT DPT Q • 0-5 V
PT DPT DTT TT
• 0-10 V
• 0-20 mA
9 10
• 4-20 mA.
LT LT
Sensor range, minimum value
Set the minimum value of the connected sensor.

TM062328
Sensor range, maximum value
Set the maximum value of the connected sensor.

Overview of sensor locations Related information

6.8 Identification of the functional module

Sensor function/measured 7.16 External setpoint function

Pos. 7.46 Assisted pump setup
parameter
Inlet pressure 1 7.47 Setup, analog input
7.52 Factory settings
Diff. press., inlet 2
7.8.1 Setting two sensors for differential
Discharge press. 3
measurement
Diff. press.,outlet 4 To measure the difference of a parameter between
Diff. press.,pump 5 two points, set the corresponding sensors as follows:

Press. 1, external 6
Analog input Analog input for
Press. 2, external 7 Parameter
for sensor 1 sensor 2
Diff. press., ext. 8 Pressure, Differential Differential
Storage tank level 9 option 1 pressure, inlet pressure, outlet

Feed tank level 10 Pressure, Pressure 1, Pressure 2,

option 2 external external
Pump flow 11
Flow Pump flow Flow, external
Flow, external 12
Temperature Temperature 1 Temperature 2
Liquid temp. 13
Temperature 1 14 If you want to use the control mode
Temperature 2 15 Constant differential pressure, you must
choose the function Feedback sensor for
Diff. temp., ext. 16 the analog input of both sensors.
Ambient temp. Not shown
Other parameter Not shown
7.9 Pt100/1000 inputs
Available inputs depend on the functional module
Unit fitted in the pump:

Parameter Possible units

FM 200 7) FM 300 7)
Pressure bar, m, kPa, psi, ft Function (terminal)
(standard) (advanced)
Level m, ft, in Pt100/1000 input 1,
- ●
Pump flow m³/h, l/s, yd³/h, gpm setup (17 and 18)

Liquid temperature °C, °F Pt100/1000 input 2,

- ●
setup (18 and 19)
Other parameter %
7) See the section on the identification of the functional
module.

44
 English (GB)
If you want to set the Pt100/1000 input for a feedback FM 200 8) FM 300 8)
sensor, we recommend that you do this via the Function (terminal)
Assisted pump setup menu. See the section on (standard) (advanced)
assisted pump setup. Digital input 1, setup
● ●
If you want to set a Pt100/1000 input for other (2 and 6)
purposes, you can do this manually.
Digital input 2, setup
You can set the analog inputs via the Setup, analog - ●
(1 and 9)
input menu. See the section on setup, analog input.
If you make the manual setting via the Grundfos GO, 8) See the section on the identification of the functional
you need to enter the menu for the Pt100/1000 input module.
under the Settings menu.
To set a digital input, make the settings below.
Function
The Pt100/1000 inputs can be set to the following Function
functions: Select one of the following functions:
• Not active • Not active: When set to Not active, the input has
• Feedback sensor: The sensor is used for the no function.
selected control mode. • External stop: When the input is deactivated
• Ext. setpoint infl.: See the section on the (open circuit), the pump stops.
external setpoint function. • Min. (minimum speed): When the input is
• Other function. activated, the pump runs at the set minimum
speed.
Measured parameter
• Max. (maximum speed): When the input is
Select one of the parameters listed to be measured in activated, the pump runs at the set maximum
the system by the PT100/1000 sensor connected to speed.
the actual PT100/1000 input. • User-defined speed: When the input is activated,
1 2 the motor runs at a speed set by the user.
TT TT • External fault: When the input is activated, a
timer is started. If the input is activated for more
TM064012

4 3
DTT than 5 seconds, the pump stops and a fault is
TT
indicated. This function depends on input from
external equipment.
Overview of PT100/1000 sensor locations • Alarm resetting: When the input is activated, a
possible fault indication is reset.
• Dry running: When this function is selected, lack
Parameter Pos. of inlet pressure or water shortage (dry running)
can be detected, and if that occurs, the pump
Liquid temp. 1 stops. The pump cannot restart as long as the
Temperature 1 2 input is activated. This requires the use of an
accessory, such as the following:
Temperature 2 3
- a pressure switch installed on the inlet side of
Ambient temp. Not shown the pump
- a float switch installed on the inlet side of the
Measuring range pump.
-50 to 204 °C. • Accumulated flow: When this function is
selected, the accumulated flow can be registered.
Related information This requires the use of a flowmeter that can give
6.8 Identification of the functional module a feedback signal as a pulse per defined volume
of water. See the section on pulse flowmeter
7.16 External setpoint function setup.
7.46 Assisted pump setup • Predefined setpoint digit 1 (applies only to
7.47 Setup, analog input digital input 2): When digital inputs are set to
7.52 Factory settings predefined setpoint, the pump operates according
to a setpoint based on the combination of
7.10 Digital inputs the activated digital inputs. See the section on
predefined setpoints.
Available inputs depend on the functional module
fitted in the pump:

45
English (GB)

• Active output: When the input is activated, the Related information

related digital output is activated. See the section 6.8 Identification of the functional module
on digital inputs/outputs. This is done without any
changes to pump operation. 7.1 Priority of settings
• Local motor stop: When the input is activated, 7.11 Digital inputs/outputs
the given pump in a multipump system stops 7.17.1 Predefined setpoints
without affecting the performance of the other 7.23 Pulse flowmeter setup
pumps in the system.
7.52 Factory settings
The priority of the selected functions in relation to
each other is listed in the section on priority of 7.11 Digital inputs/outputs
settings.
Available inputs/outputs depend on the functional
A stop command always has the highest priority. module fitted in the pump:
Activation delay
Select the activation delay (T1). FM 200 9) FM 300 9)
Function (terminal)
It is the time between the digital signal and the (standard) (advanced)
activation of the selected function.
Digital input/output 3,
Range: 0-6000 seconds. ● ●
setup (6 and 10)
Duration timer mode Digital input/output 4,
- ●
Select the mode. See the figure below. setup (11 and 18)
• Not active
• active with interrupt (mode A)
9) See the section on the identification of the functional
module.
• active without interrupt (mode B)
• active with after-run (mode C). You can select if the interface is to be used as input
Select the duration time (T2). or output. The output is an open collector and you
It is the time that, together with the mode, determines can connect it to, for example, an external relay or
how long the selected function is active. controller such as a PLC.
Range: 0 to 15,000 seconds.
+ 24V
T input > T1 + T2 T input < T1 + T2

DO 3/4
DI
1

TM064463
T input T input

A
T1 T2 T1
Example of configurable digital inputs/outputs
B
T1 T2 T1 T2
Pos. Description
TM064949

C 1 External controller
T1 T2 T1 T2

To set a digital input/output, make the settings below.

Duration timer function of digital inputs Mode

You can set the digital input/output 3 and 4 to act as
digital input or digital output:
Pos. Description
• Digital input
DI Digital input • Digital output.
A Mode A Function
B Mode B You can set the digital input/output 3 and 4 to the
functions stated in the table below:
C Mode C

46
 English (GB)
Possible functions, digital input/output 3 T input > T1 + T2 T input < T1 + T2

Function if output
Function if input
(See details in the DI
(See details in the T input T input
section on Signal
section on digital
relays 1 and 2 (Relay
inputs)
outputs)) A
T1 T2 T1
Not active Not active
External stop Ready B
Min. Alarm T1 T2 T1 T2

Max. Operation

TM064949
C
User-defined speed Pump running
T1 T2 T1 T2
External fault Warning
Alarm resetting Limit 1 exceeded
Dry running Limit 2 exceeded Duration timer function of digital inputs
Accumulated flow Digital input 1, state
Predefined setpoint Digital input 2, state Pos. Description
digit 2 Digital input 3, state
Active output DI Digital input
Digital input 4, state
Local motor stop A Mode A
B Mode B
Possible functions, digital input/output 4
C Mode C
Function if output
Function if input
(See details in the Related information
(See details in the
section on Signal
section on digital 6.8 Identification of the functional module
relays 1 and 2 (Relay
inputs ) 7.10 Digital inputs
outputs))
7.12 "Signal relays" 1 and 2 (Relay outputs)
Not active Not active
7.52 Factory settings
External stop Ready
Min. Alarm 7.12 "Signal relays" 1 and 2 (Relay outputs)
Max. Operation
The pump incorporates two signal relays for potential-
User-defined speed Pump running free signalling. For further information, see the
External fault Warning section on megging.
Alarm resetting Limit 1 exceeded
Function
Dry running Limit 2 exceeded
You can configure the signal relays to be activated by
Accumulated flow Digital input 1, state one of the following incidents:
Predefined setpoint Digital input 2, state • Not active
digit 3 Digital input 3, state • Ready: The pump can be running or is ready to
Active output Digital input 4, state run and no alarms are present.
Local motor stop • Alarm: There is an active alarm and the pump is
stopped.
Duration timer mode (only for input) • Operating (Operation): Operating equals Running
Select the duration timer mode: but the pump is still in operation when the pump
is stopped due to low flow. See the section on
• Not active
low-flow detection.
• active with interrupt (mode A)
• Running (Pump running): The pump is running.
• active without interrupt (mode B)
• Warning: There is an active warning.
• active with after-run (mode C).
• Digital input 1: If digital input 1 is activated, the
Select the duration time (T2). output is also activated.
It is the time that, together with the mode, determines • Digital input 2: If digital input 2 is activated, the
how long the selected function is active. output is also activated.
Range: 0 to 15,000 seconds. • Digital input 3: If digital input 3 is activated, the
output is also activated.

47
English (GB)

• Digital input 4: If digital input 4 is activated, the Signal Actual value

output is also activated. range
• Limit 1 exceeded: When this function is [V, mA] Sensormin Sensormax
activated, the signal relay is activated. See the
section on the limit-exceeded function. 0-10 V 0V 10 V
• Limit 2 exceeded : When this function is 0-20 mA 0 mA 20 mA
activated, the signal relay is activated. See the
section on the limit-exceeded function. 4-20 mA 4 mA 20 mA
• External fan control (Control of external fan):
When you select External fan control, the relay The reading is a percentage of the range between the
is activated if the internal temperature of the motor minimum and maximum value.
electronics reaches a preset limit value. • Resulting setpoint
Related information
7.18 Limit-exceeded function Signal Resulting setpoint
7.20 Stop function (Low-flow stop function) range [%]
7.52 Factory settings [V, mA] 0 100
9.3 Megging 0-10 V 0V 10 V

7.13 Analog output 0-20 mA 0 mA 20 mA

Whether the analog output is available or not 4-20 mA 4 mA 20 mA

depends on the functional module fitted in the pump.
The reading is a percentage of the external setpoint
10)
range.
FM 200 FM 300 10)
Function (terminal) • Motor load
(standard) (advanced)
Analog output - ●
Signal Motor load
10) See
range [%]
the section on the identification of the functional
module. [V, mA] 0 100
0-10 V 0V 10 V
The analog output enables the reading of certain
operating data to external control systems. 0-20 mA 0 mA 20 mA
To set the analog output, make the settings below. 4-20 mA 4 mA 20 mA
Output signal:
• 0-10 V The reading is a percentage of the range between 0
and 200 % of the maximum permissible load at the
• 0-20 mA
actual speed.
• 4-20 mA.
• Motor current
Function of analog output:
• Actual speed Motor current
Signal
range [%]
Signal Actual speed [V, mA] 0 100 200
range [%]
0-10 V 0V 5V 10 V
[V, mA] 0 100 200
0-20 mA 0 mA 10 mA 20 mA
0-10 V 0V 5V 10 V
4-20 mA 4 mA 12 mA 20 mA
0-20 mA 0 mA 10 mA 20 mA
4-20 mA 4 mA 12 mA 20 mA The reading is a percentage of the range between 0
% and 200 % of the rated current.
The reading is a percentage of the rated speed.
• Actual value

48
 English (GB)
• Limit 1 exceeded and Limit 2 exceeded Constant
Kp Ti
differential pressure
Signal Limit-exceeded function
range Output not
[V, mA] Output active
active Δp
0.5 0.5
0-10 V 0V 10 V Δp

0-20 mA 0 mA 20 mA p p

4-20 mA 4 mA 20 mA
L1

This function is typically used for monitoring Δp

secondary parameters in the system. If the limit L1 < 5 m: 0.5
is exceeded, an output, a warning or an alarm is
activated. 0.5 L1 > 5 m: 3
• Flow rate L1 L1 > 10 m: 5

Δp
Signal Flow rate
range [%]
[V, mA] 0 100 200 L1: Distance in metres between the pump and the
sensor.
0-10 V 0V 5V 10 V
0-20 mA 0 mA 10 mA 20 mA
Kp
4-20 mA 4 mA 12 mA 20 mA
Constant Heating Cooling Ti
temperature system system
The reading is a percentage of the range between 0 11) 12)
and 200 % of the nominal flow.

Related information
0.5 -0.5 10 + 5L2
6.8 Identification of the functional module t

L2
7.52 Factory settings
L2
7.14 Controller settings t
0.5 -0.5 30 + 5L2
The pumps have a factory default setting of gain (Kp)
and integral time (Ti).
However, if the factory setting is not the optimum 11) In
heating systems, an increase in pump performance
setting, you can change the gain and the integral results in a rise in temperature at the sensor.
time: 12) In
cooling systems, an increase in pump performance
• Set the gain within the range from 0.1 to 20. results in a drop in temperature at the sensor.
• Set the integral-action time within the range from
0.1 to 3600 seconds. If you select 3600 seconds, L2: Distance in metres between the heat exchanger
the controller functions as a PI controller. and the sensor.
Furthermore, you can set the controller to inverse
control. Constant differential
Kp Ti
This means that if you increase the setpoint, the temperature
speed is reduced. In case of inverse control, you
must set the gain within the range from -0.1 to -20.
Δt

Guidelines for setting of PI controller

L2

The tables below show the recommended controller -0.5 10 + 5L2

settings: t

Δt

t
L2

49
English (GB)

L2: Distance in metres between the heat exchanger 7.15 Operating range
and the sensor.
Set the operating range as follows:
1. Set the minimum speed within the range from
Constant flow rate Kp Ti fixed minimum speed (5) to user-set maximum
speed (2).
Q 0.5 0.5
2. Set the maximum speed within the range from
user-set minimum speed (4) to fixed maximum
speed (1).
Constant pressure Kp Ti The range between the user-set minimum and
maximum speed is the operating range (3).

0.5 0.5
100 % 1
p

p 0.5 0.5
67 % 2

Constant level Kp Ti
L

3
-10 0

10 0 24 % 4

10 % 5

TM069817
General rules of thumb:
0%
If the controller is too slow-reacting, increase the
gain.
If the controller is hunting or unstable, dampen the
system by reducing the gain or increasing the integral Pos. Description
time.
1 Fixed maximum speed
Related information 2 User-set maximum speed
7.52 Factory settings
3 Operating range
4 User-set minimum speed
5 Fixed minimum speed

Related information
7.52 Factory settings

50
 English (GB)
7.16 External setpoint function Example with constant curve with linear influence
You can influence the setpoint by an external signal, Actual setpoint: actual input signal × (setpoint - user-
either via one of the analog inputs or, if an advanced set minimum speed) + user-set minimum speed.
functional module (FM 300) is fitted, via one of the At a user-set minimum speed of 25 %, and a setpoint
Pt100/1000 inputs. of 85 % and an external setpoint of 60 %, the actual
setpoint is the following:
Before you can enable the function, you
must set one of the analog inputs or 0.60 × (85 - 25) + 25 = 61 %
Pt100/1000 inputs to External setpoint
B
function.
100 C
See the sections on analog inputs and Pt100/1000
inputs. F 85

Example with constant pressure with linear G 61

influence
Actual setpoint: actual input signal × (setpoint -
E 25
sensor min.) + sensor min.
At a sensor minimum of 0 bar, a setpoint of 2 bar and
an external setpoint of 60 %, the actual setpoint is the 0
D A
following: 0 100 %
0.5 3.5 V
0.60 × (2 - 0) + 0 = 1.2 bar
0 5V
0 10 V

TM064525
[bar] 0 20 mA
4 20 mA
D -50 204 C

C
Example of setpoint influence with constant curve
2 100

F 1.2
Pos. Description

E 0 0
A External setpoint signal
0 A 100 % B B Speed [%]
0.5 3.5 V
0 5V C Fixed maximum speed
0 10 V
TM064165

0 20 mA D Actual input signal (60 %)

4 20 mA
-50 204 C E User-set min. speed
F Setpoint
Example of setpoint influence with sensor feedback
G Actual setpoint

Pos. Description Related information

A Actual input signal (60 %) 7.8 Analog inputs
7.9 Pt100/1000 inputs
B External setpoint signal
C Setpoint
D Sensor max.
E Sensor min.
F Actual setpoint

51
English (GB)

7.16.1 Setpoint influence functions 7.16.1.3 Influence table

7.16.1.1 Linear function The setpoint is influenced by a curve made of two
to eight points. There is a straight line between the
The setpoint is influenced linearly from 0 to 100 %. points and a horizontal line before the first point and
after the last point.
Y
Y
100
100

0
0 100 % X 0
0.5 3.5 V X
0 5V 0 100 %
0.5 3.5 V
TM070255
0 10 V
0 20 mA 0 5V

TM070254
4 20 mA 0 10 V
-50 204 °C 0 20 mA
4 20 mA
-50 204 °C
Pos. Description
X External input signal from 0 to 100 % Pos. Description

Y Setpoint influence from 0 to 100 % X External input signal from 0 to 100 %

Y Setpoint influence from 0 to 100 %
7.16.1.2 Linear with Stop
In the input signal range from 20 to 100 %, the Related information
setpoint is influenced linearly. If the input signal is 7.52 Factory settings
below 10 %, the motor changes to the Stop operating
mode. If the input signal increases over 15 %, the 7.17 Availability of predefined setpoints
operating mode changes back to Normal.

Y Pump variant Predefined setpoints

100
CME -
CRE, CRIE, CRNE,
●
SPKE, MTRE, BMS hp

7.17.1 Predefined setpoints

A, 0
You can set and activate seven predefined setpoints
B by combining the input signals with digital inputs
0 10 15 20 100 X 2, 3 and 4, as shown in the table below. Set the
0.5 3.5 V digital inputs 2, 3 and 4 to Predefined setpoints
0 5V if all seven predefined setpoints are to be used.
0 10 V You can also set one or two of the digital inputs
TM070542

0 20 mA to Predefined setpoints. However, this limits the

4 20 mA number of predefined setpoints available.
-50 204 °C

Digital inputs
Pos. Description Setpoint
2 3 4
X External input signal from 0 to 100 %
0 0 0 Normal setpoint or Stop
Y Setpoint influence from 0 to 100 %
1 0 0 Predefined setpoint 1
A Normal
0 1 0 Predefined setpoint 2
B Stop

52
 English (GB)
Digital inputs selected action can take place. You can set up to
Setpoint four limit-exceeded functions, meaning that you can
2 3 4 monitor four different parameters or two to four limits
1 1 0 Predefined setpoint 3 of the same parameter simultaneously.
Note that when using Limit 1-3 exceeded in a
0 0 1 Predefined setpoint 4 multipump system, the selected action has an impact
1 0 1 Predefined setpoint 5 on the system, for example, if Action is set to Stop,
then the system stops.
0 1 1 Predefined setpoint 6
Limit 4 exceeded in a multipump system is a local
1 1 1 Predefined setpoint 7 function. The selected action only has an impact on
the single pump, for example, if Action is set to Stop,
0: Open contact then only the single pump stops.
1: Closed contact
For Limit 4 exceeded in a multipump
Example system, the action always leads to a pump
stop, alarm and stop or a warning.
The figure shows how you can use the digital inputs
to set seven predefined setpoints. Digital input 2 is
The function requires setting the following
open, and digital inputs 3 and 4 are closed. If you
parameters:
compare with the table above, you can see that
Predefined setpoint 6 is activated. Measured
Set the measured parameter to be monitored.
DI 4 SP 7
Limit
DI 3 7 6 SP 6
5 Set the limit that activates the function.
DI 2 SP 5
4 Hysteresis band
SP 4
SPA 3 Set the hysteresis band for when the function must be
SP 3
2 deactivated again.
SP 2
1 Limit exceeded when
0 SP 1
Set the function to be activated when the selected
parameter exceeds or drops below the set limit.
TM070083

SP N • above limit:
Stop The function is activated if the measured
parameter exceeds the set limit.
• below limit:
Pos. Description
The function is activated if the measured
DI Digital input parameter drops below the set limit.
SP Setpoint Action
SPA Actual setpoint If the value exceeds a limit, you can set an action.
The following actions are available:
SPN Normal setpoint • Not active:
Stop Stop The pump remains in its current state. Use this
setting if you only want to activate a signal relay
If all digital inputs are open, the motor stops or runs output when the limit is reached.
at the normal setpoint. Set the desired action with • Stop:
the Grundfos GO or with the HMI 300 or HMI 301 The pump stops.
operating panel. • Min.:
Related information The pump reduces the speed to minimum speed.
7.52 Factory settings • Max.:
The pump increases the speed to maximum
7.18 Limit-exceeded function speed.
Use this function to monitor a measured parameter • User-defined speed:
or one of the internal values such as speed, motor The pump runs at a speed set by the user.
load or motor current. If a set limit is reached, a

53
English (GB)

• Alarm and Stop: Example

An alarm is given, and the pump stops. The function is to monitor the outlet pressure from the
• Alarm and Min.: pump. If the pressure is below 5 bar for more than
An alarm is given, and the pump decreases the 5 seconds, a warning is indicated. If the pressure is
speed to a minimum. above 7 bar for more than 8 seconds, reset the limit-
exceeded warning.
• Alarm and Max.:
An alarm is given, and the pump increases the Y
speed to maximum. 1
• Alarm and User-defined speed:
An alarm is given, and the pump runs at the 3
speed set by the user. 2

Alarm and Warning text

The Limit-exceeded function automatically defines 4 4
a relevant alarm or warning text based on the

TM070085
Measured parameter and Limit exceeded when A
functions.
5 6
X
The auto defined text can be overwritten by selecting
the alarm or warning text option Limit X exceeded.
The following list shows the auto-defined texts: X: Time in seconds
• Limit X exceeded Y: Pressure in bar
• Low inlet pressure
• High discharge pressure Pos. Parameter Setting
• High pressure 1 Measured Discharge pressure
• Low pressure
2 Limit 5 bar
• High temperature
• Low temperature 3 Hysteresis band 2 bar
• High flow 4 Limit exceeded when below limit
• Low flow
5 Detection delay 5 seconds
• High level
• Low level 6 Resetting delay 8 seconds
• High diff. pressure Limit-exceeded
A -
• Low diff. pressure function active
• High conductivity. - Action Warning
Detection in Stop
Related information
Enable this function to prevent the pump from
monitoring the limit while the pump is in the Stop 7.12 "Signal relays" 1 and 2 (Relay outputs)
state. 7.52 Factory settings

Use the Detection delay function to allow 7.19 LiqTec function

the pump to start up and bring the value
above the limit before detecting.
Pump variant LiqTec function
Detection delay MTHE, CME -
Setting the detection delay ensures that the CRE, CRIE, CRNE,
monitored parameter stays above or below a set limit ●
SPKE, MTRE
in a set time before the function is activated.

Resetting delay You can enable the function of the LiqTec sensors
in this display. A LiqTec sensor protects the pump
The resetting delay is the time from the point
against dry running.
when the measured parameter differs from the set
limit, including the set hysteresis band, to the point The function requires that a LiqTec sensor is fitted
when the function is reset. and connected to the pump.

54
 English (GB)
When you enable the LiqTec function, it stops operation period are minimised. In this case,
the pump if dry running occurs. Restart the pump the stop function uses the factory-set values
manually if it stops due to dry running. of the minimum flow (Qmin2) and other internal
parameters. See the figure below.
Dry running detection delay
• User-defined mode (Customised operating
You can set a detection delay to make sure the mode): The pump uses the parameters set for
pump is given a chance to start up before the LiqTec ΔH and minimum flow (Qmin3) respectively for the
function stops it due to dry running.
stop function. See the figure below.
Range: 0-254 seconds.
H
Related information
7.52 Factory settings

7.20 Stop function (Low-flow stop function)

1
You can set Low-flow stop function to the following
values: △H
• Not active 2
• Energy-optimal mode

TM064267
• High-comfort mode
• User-defined mode (Customised operating Q min2 Q min1 Q
Q min3
mode).
When the low-flow stop function is active, the flow Difference between start and stop pressures (ΔH)
is monitored. If the flow becomes lower than the and minimum flow rate
set minimum flow (Qmin), the pump changes from
continuous operation at constant pressure to start-
stop operation and stops if the flow reaches zero. Pos. Description
The advantages of enabling Low-flow stop function
1 Stop pressure
are the following:
• There is no unnecessary heating from the 2 Start pressure
pumped liquid.
• The wear of the shaft seals is reduced. In start-stop operation, the pressure varies between
• There is reduced noise from operation. the start and stop pressures. See the figure above.
In User-defined mode (Customised operating
The disadvantages of enabling Low-flow stop
mode), ΔH is factory-set to 10 % of the actual
function may be the following:
setpoint. ΔH can be set within the range from 5 to
• The delivered pressure is not completely constant 30 % of the actual setpoint.
as it fluctuates between the start and stop
The pump changes to start-stop operation if the flow
pressures.
becomes lower than the minimum flow rate.
• The frequent starts and stops of the pump may in
some applications cause acoustic noise. The minimum flow rate is set in percentages of
the nominal flow rate of the pump. See the pump
The impact of the above disadvantages very much nameplate.
depends on the setting selected for the stop function.
In User-defined mode (Customised operating
The High-comfort mode setting minimises pressure mode), the minimum flow rate is factory-set to 10 %
fluctuations and acoustic noise. of the nominal flow rate.
Select Energy-optimal mode if the main priority is to
reduce the energy consumption as much as possible. Low-flow stop function
Possible settings of the stop function: A low flow can be detected in two ways:
• Energy-optimal mode: The pump automatically 1. One possibility is a built-in low-flow detection
adjusts the parameters for the stop function so function that is active if none of the digital inputs
that the energy consumption during the start- are set for flow switch.
stop operation period is minimised. In this case, • Low-flow detection function: The pump checks
the stop function uses the factory-set values the flow regularly by reducing the speed for a
of the minimum flow (Qmin1) and other internal short time. If there is no or only a small change
parameters. See the figure below. in pressure, this means that there is low flow.
• High-comfort mode: The pump automatically The speed is increased until the stop pressure
adjusts the parameters for the stop function (actual setpoint + 0.5 × ΔH) is reached and
so that the disturbances during the start-stop

55
English (GB)

the pump stops. When the pressure falls to the 4

start pressure (actual setpoint - 0.5 × ΔH), the
pump restarts. 3

TM038583
PT
• If the flow rate is higher than the set minimum 1 2
flow rate, the pump returns to continuous
operation at constant pressure.
• If the flow rate is still lower than the set Position of the non-return valve and pressure
minimum flow rate (Qmin), the pump continues sensor in a system with a positive inlet pressure
in start-stop operation until the flow rate is
higher than the set minimum flow rate (Qmin).
When the flow rate is higher than the set Pos. Description
minimum flow rate (Qmin), the pump returns to
1 Pump
continuous operation.
2. The other possibility is a flow switch connected to 2 Non-return valve
one of the digital inputs. 3 Pressure sensor
• Flow switch: When the digital input is activated
for more than 5 seconds due to low flow, 4 Diaphragm tank
the speed is increased until the stop pressure
(actual setpoint + 0.5 × ΔH) is reached, and Set minimum flow
the pump stops. When the pressure falls to Set the minimum flow rate (Qmin) in this display.
start pressure, the pump restarts. If there is This setting determines at which flow rate the system
still no flow, the pump quickly reaches the stop is to change from continuous operation at constant
pressure and stops. If there is flow, the pump pressure to start-stop operation. The setting range is
continues operating according to the setpoint. 5 to 30 % of the rated flow rate.
Operating conditions for the low-flow stop
Related information
function
7.52 Factory settings
You can only use the stop function if the system
incorporates a pressure sensor, a non-return valve
7.21 Stop at min. speed
and a diaphragm tank.
This stop function can be utilised in, for example,
constant level applications where a boost of pressure
Always install the non-return valve before is not needed. This stop function differs from the low-
the pressure sensor and diaphragm tank. flow stop but the purpose is the same. The pump
stops if there is no or low consumption.
This function monitors the speed of the pump. When
4 the PI-controller has forced the speed of the pump to
minimum according to the feedback value, the pump
3 stops after a set period of time. It remains stopped
2 until the feedback value starts to drop and the PI-
controller starts the pump again.
• Enable Stop at min. speed
Enables the function Stop at min. speed.
TM0385821

• Delay
1
The delay time during which the pump must be
running at minimum speed before it stops.
• Restart speed
Position of the non-return valve and pressure It is the speed in percentage when the pump must
sensor in system with suction lift operation start again, hysteresis. It must be set higher than
the minimum speed of the pump.

Pos. Description 7.22 Pipe filling function

1 Non-return valve This function is typically used in pressure-boosting
2 Pump applications and ensures smooth startup of systems
with, for instance, empty pipes.
3 Pressure sensor
4 Diaphragm tank

56
 English (GB)
Startup takes place in two phases: • Max. time reaction: reaction of the pump if the
1. Filling phase: The pipes are slowly filled with maximum filling time is exceeded:
water. When the pressure sensor of the system - warning
detects that the pipes are filled, phase two begins. - alarm (pump stops).
2. Pressure build-up phase: The system pressure • Pressure build-up time: ramp time from when
is increased until the setpoint is reached. The the filling pressure is reached until the setpoint
pressure build-up takes place over a pressure must be reached.
build-up time. If the setpoint is not reached within
a given time, a warning or an alarm can be given, When you activate this function, the
and the pumps can be stopped at the same time. function always starts when the pump has
been in operating mode Stop and is
P changed to Normal.
1 2
3
Related information
7.52 Factory settings

7.23 Pulse flowmeter setup

6
You can connect an external pulse flowmeter to
4 one of the digital inputs to register the actual and
accumulated flows. Based on this, you can also
calculate the specific energy.
5
To enable a pulse flowmeter, set one of the digital-
t(s)
input functions to Accumulated flow and set the
7 8
pumped volume per pulse.
TM087052

Related information
9
7.10 Digital inputs
7.52 Factory settings
Filling and pressure build-up phases
7.24 Ramps
The ramps determine how quickly the product can
Pos. Description accelerate and decelerate during start and stop or
1 Filling phase (constant-curve operation) setpoint changes.
You can make the following settings:
Pressure build-up phase (constant-pressure
2 • acceleration time, 0.1 to 300 s
operation)
• deceleration time, 0.1 to 300 s.
3 Setpoint
The times apply to the acceleration from 0 rpm to a
4 Filling pressure fixed maximum speed, and the deceleration from a
5 Actual value fixed maximum speed to 0 rpm, respectively.
At short deceleration times, the deceleration of the
6 Setpoint ramp-up product may depend on load and inertia as there is
7 Filling time no possibility of actively braking the product.
If the power supply is switched off, the deceleration of
8 Pressure build-up time
the product only depends on the load and inertia.
9 Maximum filling time
P Pressure
t(s) Time (sec)

Setting range
• Filling speed: fixed speed of the pump during the
filling phase.
• Filling pressure: the pressure that the pump
must reach before the maximum filling time.
• Max. filling time: the time in which the pump
must reach the filling pressure.

57
English (GB)

The alarm or warning types are the following:

Y
• Warning:
1 It is a warning, but there is no change in the
2 operating mode.
• Stop:
3 The pump stops.
• Min.:
The pump reduces the speed to minimum.
0
X • Max.:
4 5

TM069798
The pump increases the speed to maximum.
6 7 • User defined speed:
The pump runs at the speed set by the user.
The affected inputs are the following:
Pos. Description • Analog input 1
Y Speed • Analog input 2
• Analog input 3
X Time
• Grundfos Direct Sensor
1 Fixed maximum • Pt100/1000 input 1
2 User-set maximum • Pt100/1000 input 2
• Liqtec input.
3 User-set minimum
4 Fixed initial ramp 7.27 Motor bearing monitoring
5 Fixed final ramp Use this function to select whether or not you want to
monitor the motor bearings.
6 Ramp time up
You can make the following settings:
7 Ramp time down • Active
• Not active.
Related information
When the function is set to Active, a counter in the
7.52 Factory settings controller starts counting the running hours of the
bearings. The running hours are calculated based
7.25 Standstill heating on the motor speed. When a predefined limit is
Use this function to avoid condensation in humid reached, a warning indicates that the bearings must
environments. be replaced or relubricated.
When you set the function to Active and the product If you change the function to Not active,
is in operating mode Stop, a low AC voltage is the counter continues to count. However,
applied to the motor windings. The voltage is not high no warning is given when it is time to
enough to make the motor rotate, but ensures that replace the bearings. If you change the
sufficient heat is generated to avoid condensation in function to Active again, the accumulated
the product, including the electronic parts in the drive. running hours are used to recalculate the
replacement time.
Remember to remove the drain plugs and
fit a cover over the product. 7.28 Service
7.28.1 Motor bearing service
Related information This display shows when to replace the motor
7.52 Factory settings bearings. The controller monitors the operating
pattern of the motor and calculates the period
7.26 Alarm handling between bearing replacements.

This setting determines how the pump must react in

case of a sensor failure.

58
 English (GB)
Displayable values: • Select date format:
• in 2 years - YYYY-MM-DD
• in 1 year - DD-MM-YYYY
• in 6 months - MM-DD-YYYY.
• in 3 months • Select time format:
• in 1 month - HH:MM 24-hour clock
• in 1 week - HH:MM am/pm 12-hour clock.
• Now! • Set date.
7.28.2 Bearing replacements • Set time.
The display shows the number of bearing Related information
replacements made during the lifetime of the motor.
6.8 Identification of the functional module
7.28.3 Motor bearing maintenance 7.52 Factory settings
When the bearing monitoring function is active, a
warning is given when the motor bearings must be 7.33 Units
replaced. This function is only available in the HMI 300 and HMI
1. Replace the motor bearings. 301 operating panels.
2. Press Bearings replaced. Use this function to select SI or US units. You can
make the setting for all parameters or customize for
7.29 Pump number each individual parameter.

Use this function to allocate a unique number to the Related information

pump. This makes it possible to distinguish between 7.52 Factory settings
pumps in connection with GENIbus communication.

Related information 7.34 Enable/disable settings

7.52 Factory settings Use this function to disable the adjusting of settings
for protective reasons.
7.30 Enable/disable radio comm. • If you use Grundfos GO and set the buttons
to Not active, the buttons on the HMI 200 or
Use this function to set the radio communication
HMI 201 operating panel are disabled, except the
to Enabled or Disabled. Select Disabled in areas
Radio communication button.
where radio communication is not allowed.
• If you disable the buttons on pumps fitted with the
HMI 300 or HMI 301 operating panel via Enable/
IR communication remains active. disable settings, you can still use the buttons
to navigate through the menus but you cannot
make changes directly on these operating panels.
A lock symbol appears on the display. However,
Related information you can unlock the motor temporarily and allow
7.52 Factory settings settings by pressing the Up and Down buttons
simultaneously for at least 5 seconds.
7.31 Language
Related information
The function is only available in the HMI 300 and HMI
7.52 Factory settings
301 operating panels.
Use this function to select the desired language from 7.35 Delete history
the list.
This function is only available in the HMI 300 and HMI
Related information 301 operating panels.
7.52 Factory settings Use this function to delete the following historical
data:
7.32 Set date and time • Delete operating log
The function is only available in the HMI 300 and HMI • Delete energy consumption.
301 operating panels.
Use this function to set the date and time as well as 7.36 Define Home display
how you want them to be viewed on the display. This function is only available in the HMI 300 and HMI
301 operating panels.

59
English (GB)

Set the Home display to show up to four user-defined 3. Enter a connection code and press OK.
parameters. You can change the code in the Connection
code menu at any time. The old code is not
Related information
required.
7.52 Factory settings
7.42 Run start-up guide
7.37 Display settings
The function is only available in the HMI 300 and HMI
This function is only available in the HMI 300 or HMI 301 operating panels.
301 operating panels. The startup guide automatically starts when you start
Use this function to adjust the display brightness. You the product for the first time. You can always run it
can also set whether or not the display is to switch off later. It guides you through the general settings of the
if no buttons are activated for a period of time. product.
Related information To run the startup guide, go to Settings > General
settings > Run start-up guide.
7.52 Factory settings
Related information
7.38 Store actual settings 6.8 Identification of the functional module
Use this function to store the current settings to 7.6 Control mode
enable the user to go back to a previous set of
7.31 Language
settings.
7.32 Set date and time
7.39 Recall stored settings 7.46 Assisted pump setup

Grundfos GO 7.43 Alarm log

In this menu, you can recall stored settings from a This function contains a list of logged alarms from the
number of previously stored settings that the pump product. The log shows the alarm code, name of the
then uses. alarm, when the alarm occurred and when the alarm
Advanced operating panel was reset.
In this menu, you can recall the last stored settings
7.44 Warning log
that the pump then uses.
This function contains a list of logged warnings from
7.39.1 Undo the product. The log shows the warning code, name
This function is only available in the Grundfos GO. of the warning, when the warning occurred and when
Use this function to undo all settings made with the the warning was reset.
Grundfos GO in the current communication session.
Once you recall settings, you cannot undo it. 7.45 Assist
This menu consists of a number of different assist
7.40 Pump name functions.
This function is only available in the Grundfos GO. Assist functions are small guides that take you
Use this function to give the motor a name. The through the steps needed to set the product.
selected name then appears in the Grundfos GO.
7.46 Assisted pump setup
7.41 Connection code This menu guides you through the following:
Use the connection code to enable automatic • selection of control mode
connection between the Grundfos GO and the
• configuration of feedback sensors
product. Thus, you do not need to press OK or the
Radio communication button each time. • adjusting the setpoint
You can also use the connection code to restrict • controller settings
remote access to the product. • summary of settings.
You can only set the connection code with the Example of how to use the Assisted pump setup for
Grundfos GO. setting up the pump to constant pressure:
7.41.1 Setting a connection code in the product On the Grundfos GO
by using the Grundfos GO 1. Open the Assist menu.
1. Connect Grundfos GO to the product. 2. Select Assisted pump setup.
2. Go to Settings > General > Connection code. 3. Select the control mode Constant pressure
(Const. pressure).

60
 English (GB)
4. Read the description for this control mode. Related information
5. Select which analog input to use as sensor input. 7.2 Setpoint
6. Select the sensor function according to where the 7.8 Analog inputs
sensor is installed in the system. See the section
7.9 Pt100/1000 inputs
on analog inputs.
7. Select the electrical input signal according to the 7.48 Setting of date and time
sensor specifications.
This function is only available in the HMI 300 and HMI
8. Select the measuring unit according to the sensor
301 operating panels.
specifications.
9. Set the minimum and maximum sensor range The inputs and outputs available depend on the
values according to the sensor specifications. functional module fitted in the motor.
10. Set the desired setpoint.
11. Set the gain and integral time of the controller. Functional module Setting of date and time
See the section on the controller. FM110 -
12. Type the desired pump name.
FM310 ●
13. Check the summary of settings and confirm them.
FM311 ●
On the advanced operating panel
1. Open the Assist menu.
The function guides you through the following
2. Select Assisted pump setup. settings:
3. Select the control mode Const. pressure. • Select date format
4. Select which analog input to be used as sensor • Set date
input.
• Select time format
5. Select the measured parameter which is to be
• Set time.
controlled. See the section on analog inputs.
6. Select the measuring unit according to the sensor Related information
specifications. 6.8 Identification of the functional module
7. Set the minimum and maximum sensor range
7.32 Set date and time
values according to the sensor specifications.
8. Select electrical input signal according to the 7.49 Setup of multipump system
sensor specifications.
The function Setup of multi-pump system enables
9. Set the desired setpoint.
the control of two motors connected in parallel
10. Set the gain and integral time of the controller. without external controllers. The pumps or motors in a
See the section on the controller. system communicate with each other via the wireless
11. Check the summary of settings and confirm them GENIair connection or the wired GENI connection.
by pressing [OK]. You can set a multipump system via the master motor
Related information which is the first selected motor.
If several pumps or motors in the system have
7.2 Setpoint
sensors, they can all function as the master and
7.6 Control mode take over the master function if the other fails. This
7.8 Analog inputs provides additional redundancy in the multimotor
7.14 Controller settings system.
You can choose between the following multimotor
7.47 Setup, analog input functions:
This menu is only available in the Alternating operation
advanced operating panel.
Alternating operation serves as a duty and standby
This menu guides you through the following: operating mode, and is possible with two pumps or
two motors of the same size and type connected in
Setup, analog input
parallel. The main purpose of the function is to ensure
• Analog inputs 1 to 3. an even amount of running hours, and to ensure that
• Pt100/1000 input 1 and 2. the other pump or motor starts if the duty pump or
• Adjusting the setpoint. motor stops due to an alarm.
• Summary.

61
English (GB)

You can choose between two alternating operating Select Running pump sensor if the sensor is placed
modes: on or across individual pumps, for example, if the
• Alternating operation, time: sensor is installed behind non-return valves, or if it is
not able to measure the output from all pumps.
The change from one pump or motor to the other
is based on time. This setting is only available in alternating
operation and cascade operation.
• Alternating operation, energy:
The change from one pump or motor to the other 7.49.4 Setting up a multipump system
is based on energy consumption. You can set up a multipump system in the following
If the duty pump or motor fails, the other pump or ways:
motor starts. • Grundfos GO and wireless motor connection
Backup operation • Grundfos GO and wired motor connection
• HMI 300 or HMI 301 operating panel and wireless
Backup operation is possible with two motors of
motor connection
the same size and type connected in parallel. One
motor is operating continuously. The backup motor is • HMI 300 or HMI 301 operating panel and wired
operated for a short time each day to prevent seizing motor connection.
up. If the duty motor stops due to a fault, the backup
Related information
motor starts.
7.29 Pump number
Cascade operation
7.40 Pump name
This function is available with up to 4 motors installed 7.46 Assisted pump setup
in parallel. The motors must be of the same size and
if used with pumps, the pumps must be of the same 7.49.4.1 Grundfos GO and wireless motor
model. connection
• The performance is adjusted to the demand 1. Power on both motors.
through cutting pumps in or out and through
parallel control of the pumps in operation. 2. Establish contact to one of the motors with the
• The controller maintains a constant process value Grundfos GO.
through continuous adjustment of the speed of the 3. Set the needed analog and digital inputs via
pumps. the Grundfos GO, according to the connected
• Pump changeover is automatic and depends on equipment and the required functionality.
load, operating hours and fault detection.
• All pumps in operation run at the same speed. 4. Assign a name to the motor using the Grundfos
GO.
• The number of pumps in operation also depends
on the energy consumption of the pumps. If 5. Disconnect the Grundfos GO from the motor.
only one pump is required, two pumps run at
a lower speed if this results in a lower energy 6. Establish contact to the other motor.
consumption.
7. Set the needed analog and digital inputs via
• If several pumps or motors in the system have a
the Grundfos GO, according to the connected
sensor, they can all function as the master and
equipment and the required functionality.
take over the master function if the other fails.
8. Assign a name to the motor using the Grundfos
7.49.1 Alternating operation, time
GO.
The Alternating operation, time menu sets the
interval of alternation between two pumps. 9. Select the Assist menu and Setup of multi-
This setting is only available in alternating mode. pump system.

7.49.2 Time for pump changeover 10. Select the desired multimotor function.
The Time for pump changeover menu sets the time 11. Press the Right button to continue.
of day for pump changeover to take place.
This setting is only available in alternating operation. 12. Set the time when the alternation between the two
motors is to take place.
7.49.3 Sensor to be used
This step applies only if you have
This function defines the sensor for controlling the selected Alternating operation, time
pump system. and if the motors are fitted with the
Select Master pump sensor if the sensor is placed FM310 or FM311.
in a way where it can measure the output from all the
pumps in the system, for example, in the manifold. 13. Press the Right button to continue.

62
 English (GB)
14. Select Radio as the communication method 15. Set the time when the alternation between the two
between the two motors. motors is to take place.

15. Press the Right button to continue. This step applies only if you have
selected Alternating operation, time
16. Select pump 2 (motor 2). and if the motors are fitted with the
FM310 or FM311.
17. Select the pump from the list.
16. Press the Right button to continue.
Use OK or the Radio communication
button to identify the pump. 17. Select Bus as the communication method
between the two motors.

18. Press the Right button to continue.

18. Press the Right button to continue.
19. Select pump 2 (motor 2).
19. Confirm the setting by pressing Send.
20. Select the additional motor from the list.
20. When you finish the setup and the dialog box
disappears, wait for the green indicator light in the
middle of Grundfos Eye to light up. Use OK or the Radio communication
button to identify the pump.
7.49.4.2 Grundfos GO and wired motor
connection
1. Connect the two motors with each other with 21. Press the Right button to continue.
a 3-core screened cable between the GENIbus
terminals A, Y, B. 22. Confirm the setting by pressing Send.

2. Power on both motors. 23. When you have finish the setup and the dialog
box disappears, wait for the green indicator light in
3. Establish contact to one of the motors with the the middle of the Grundfos Eye to light up.
Grundfos GO.
7.49.4.3 HMI 300 or HMI 301 and wireless motor
4. Set the required analog and digital inputs via connection
the Grundfos GO, according to the connected 1. Power on both motors.
equipment and the required functionality.
2. On both motors, set the analog and digital inputs
5. Assign a name to the motor using the Grundfos according to the connected equipment and the
GO. required functionality.
6. Assign motor number 1 to the motor. 3. Select the Assist menu on one of the motors and
7. Disconnect the Grundfos GO from the motor. Setup of multi-pump system.

8. Establish contact to the other motor. 4. Press the Right button to continue.

9. Set the analog and digital inputs according 5. Select Wireless as the communication method
to the connected equipment and the required between the two motors.
functionality by the Grundfos GO. 6. Press the Right button to continue.
10. Assign a name to the motor using the Grundfos 7. Select the desired multimotor function.
GO.
8. Press the Right button three times to continue.
11. Assign motor number 2 to the motor.
9. Press OK to search for other motors.
12. Select the Assist menu and Setup of multi-
The green indicator light in the middle of the
pump system (multimotor setup).
Grundfos Eye flashes on the other motors.
13. Select the desired multimotor function.
10. Press OK or the Radio communication button
14. Press the Right button to continue. on the motor that is to be added to the multimotor
system.

11. Press the Right button to continue.

63
English (GB)

12. Set the Time for pump changeover. 7.49.5 Grundfos GO

This is the time when the alternation between the 1. Go to Assist.
two motors is to take place.
2. Select the Multi-pump setup and press Disable.
This step applies only if you have
selected Alternating operation, time 3. Press the Right button to continue.
and if the motors are fitted with the
4. Confirm the setting by pressing Send.
FM310 or FM311.
5. Press Finish.
13. Press the Right button to continue.
7.49.6 HMI 300 or HMI 301
14. Press OK to confirm the setting.
1. Go to Assist.
The multipump function icons appear at the
bottom of the operating panels. 2. Select the Setup of multi-pump system.

7.49.4.4 HMI 300 or HMI 301 and wired motor 3. Press the Right button to continue.
connection
4. Press OK to confirm Disable.
1. Connect the two motors with each other with
a 3-core screened cable between the GENIbus 5. Press the Right button to continue.
terminals A, Y, B.
6. Press OK to confirm.
2. Set the needed analog and digital inputs
according to the connected equipment and the 7.50 Description of control mode
required functionality.
This function is only available in the HMI 300 and HMI
3. Assign motor number 1 to the first motor. 301 operating panels.
The function describes each of the control modes
4. Assign motor number 2 to the other motor. available for the product.
5. Select the Assist menu on one of the motors and
Related information
the Setup of multi-pump system.
7.6 Control mode
6. Press the Right button to continue.
7.51 Assisted fault advice
7. Select Wired GENIbus as the communication
method between the two motors. This function provides guidance and corrective
actions in the event of product failure.
8. Press the Right button twice to continue.

9. Select the desired multimotor function.

10. Press the Right button to continue.

11. Press OK to search for other motors.

12. Select the additional motor from the list.

13. Press the Right button to continue.

14. Set the Time for pump changeover.

This is the time when the alternation between the
two motors is to take place.

This step applies only if you have

selected Alternating operation, time
and if the motors are fitted with the
FM310 or FM311.

15. Press the Right button to continue.

16. Press OK to confirm the setting.

The multipump function icons appear at the
bottom of the operating panels.

64
 English (GB)
7.52 Factory settings

● Function enabled
❍ Function disabled
- Function not available

CRE, CRIE, CRNE, SPKE, MTRE

Settings With factory-fitted Without factory-fitted
MTHE, CME
sensor sensor
Setpoint 75 % of sensor range 75 % speed 75 % speed
Operating mode Normal Normal Normal
Control mode Const. pressure Const. curve Const. curve
Pipe filling function Not active Not active Not active
Enable/disable settings Active Active Active
Stop function (Low-flow stop
Not active Not active Not active
function)
Controller settings ● ● ●
Ti 0.5 0.5 0.5
Kp 0.5 0.5 0.5
Operating range 25-100 % 25-100 % 25-100 %
Ramps
Ramp-up 1 second 1 second 1 second
Ramp-down 3 seconds 3 seconds 3 seconds
Pump number - - -
Enable/disable radio comm. Active Active Active
Analog input 1 4-20 mA Not active Not active
Analog input 2 Not active Not active Not active
Analog input 3 13) Not active Not active - 13)
Pt100/1000 input 1 13) Not active Not active - 13)
Pt100/1000 input 2 13) Not active Not active - 13)
Digital input 1 External stop External stop External stop
Digital input 2 13) Not active Not active - 13)
Digital in/output 3 Not active Not active Not active
Digital in/output 4 13) Not active Not active - 13)
Pulse flowmeter setup ❍ ❍ ❍
Predefined setpoints 0% 0% 0%
Analog output 13) Speed Speed - 13)
External setpoint function Not active Not active Not active
Signal relay 1 Alarm Alarm Alarm
Signal relay 2 Running Running Running

65
English (GB)

CRE, CRIE, CRNE, SPKE, MTRE

Settings With factory-fitted Without factory-fitted
MTHE, CME
sensor sensor
Limit 1 exceeded Not active Not active Not active
Limit 2 exceeded Not active Not active Not active
LiqTec function 13) Not active Not active - 13)
Detection delay time 13) 10 seconds 10 seconds - 13)
Standstill heating Not active Not active Not active
Motor bearing monitoring Not active Not active Not active
Pump name - - -
Connection code - - -
Units SI SI SI

13) It is only available if an advanced functional module, type FM 300, is fitted.

8. Servicing the product 8.3 Cleaning the product

DANGER WARNING
Electric shock Electric shock
Death or serious personal injury Death or serious personal injury
‐ Switch off the power supply to the ‐ Switch off the power supply to the
motor and the signal relays. Wait at motor and the signal relays. Confirm
least 5 minutes before starting any that the terminal box cover is intact
work on the motor. Make sure that the before spraying water on the product.
power supply cannot be switched on
To avoid condensation in the motor, let the motor cool
accidentally.
down before spraying it with cold water.
DANGER
Magnetic field 9. Technical data
Death or serious personal injury
‐ Do not handle the motor or rotor if you 9.1 Operating conditions
have a pacemaker.
9.1.1 Maximum number of starts and stops
The number of starts and stops via the power supply
8.1 Motor must not exceed four times per hour.
If service is needed on the product, contact Grundfos When switched on via the power supply, the pump
Service. starts after approximately 5 seconds.
If a higher number of starts and stops is desired,
8.2 Pump use the input for external start-stop when starting or
Service documentation is available in stopping the pump.
Grundfos Product Center (http://product- When started via an external on/off switch, the pump
selection.grundfos.com/). starts immediately.
If you have any questions, contact the nearest
9.1.2 Ambient temperature
Grundfos company or service workshop.
9.1.2.1 Ambient temperature during storage and
transportation
Minimum: -30 °C.
Maximum: 60 °C.

66
 English (GB)
9.1.2.2 Ambient temperature during operation A

500
3 × 200-240 V 3 × 380-500 V 480
460 IE5
Minimum -20 °C -20 °C 440
Maximum 40 °C 50 °C 420

TM069866
400

The motor can operate with the rated power output 380 B
500 1500 2500 3500
(P2) at 50 °C, but continuous operation at higher
temperatures reduces the expected product life. If the Supply voltage for three-phase motor in relation to
motor is to operate at ambient temperatures between altitude
50 and 60 °C, select an oversized motor. Contact
Grundfos for further information.
Pos. Description
9.1.3 Installation altitude
Installation altitude is the height of the installation site A Supply voltage [V]
above sea level. B Altitude [m]
Motors installed up to 1000 m above sea level can be
loaded 100 %. A
The motors can be installed up to 3500 m above sea
level. 250
240
Motors installed more than 1000 m above
sea level must not be fully loaded due to 230
the low density and consequent low 220
cooling effect of the air.
210

TM069867
Y 200 B
0 500 1500 2500 3500
100
Supply voltage for single-phase motor in relation to
90 altitude
80

70
Pos. Description
TM055243

A Supply voltage [V]

60 X
0 500 1000 1500 2000 2500 3000 3500 B Altitude [m]

Motor output power in relation to altitude

9.1.4 Humidity
Maximum humidity: 95 %.
Pos. Description If the humidity is constantly high and above 85 %,
X Altitude [m] open the drain holes in the drive-end flange. See the
sections on outdoor installation and drain holes.

To maintain the galvanic isolation and ensure correct Related information

clearance according to EN 60664-1:2007, you must
4.5 Installing the product outdoors or in areas with
adapt the supply voltage to the altitude.
high humidity
4.6 Drain holes
9.1.5 Motor cooling
To ensure cooling of motor and electronics, observe
the following:
• Position the motor in a way that ensures adequate
cooling.
• The temperature of the cooling air must not
exceed 50 °C.
• Keep the cooling fins and fan blades clean.

67
English (GB)

9.2 Electrical data Motor size Min. Max.

9.2.1 Single-phase motors [kW] [A] [A]

9.2.1.1 Supply voltage 1.1 10 20

1 × 200-240 V-10 % / +10 %, 50/60 Hz, PE. 1.5 10 20
Confirm that the supply voltage and frequency 2.2 13 35
correspond to the values stated on the nameplate.
3 16 35
Recommended fuse size
4 25 35
Motor size Min. Max.
5.5 32 35
[kW] [A] [A]
0.25 - 0.75 6 10 You can use standard as well as quick-blow or
slowblow fuses.
1.1 - 1.5 10 16
9.2.2.2 Leakage current (AC)
You can use standard as well as quick-blow or slow-
blow fuses.
Mains Leakage
Speed Power
9.2.1.2 Leakage current voltage current
rpm [kW]
The earth leakage current must be less than 3.5 mA [V] [mA]
AC. ≤ 400 < 3.5
The earth leakage current must be less than 10 mA 0.25 - 1.5
DC. > 400 <5
The leakage currents are measured in accordance 1400-2000 ≤ 400 < 3.5
with the EN 61800-5-1:2007. 2.2 - 4
1450-2200 > 400 < 3.5
9.2.2 Three-phase motors
≤ 400 < 3.5
9.2.2.1 Supply voltage 5.5 - 7.5
> 400 <5
Confirm that the supply voltage and frequency
correspond to the values stated on the nameplate. ≤ 400 < 3.5
0.25 - 2.2
> 400 <5
Recommended fuse size
• 3 × 380-500 V-10 % / +10 %, 50/60 Hz, PE: ≤ 400 < 3.5
2900-4000 3 - 5.5
> 400 < 3.5
Motor size Min. Max. ≤ 400 < 3.5
[kW] [A] [A] 7.5 - 11
> 400 <5
0.25 - 1.1 6 6
≤ 400 < 3.5
1.5 6 10 0.25 - 2.2
> 400 <5
2.2 6 16
≤ 400 < 3.5
3 10 16 4000-5900 3 - 5.5
> 400 < 3.5
4 13 16
≤ 400 < 3.5
5.5 16 32 7.5 - 11
> 400 <5
7.5 20 32
11 32 32 The leakage currents are measured without any
load on the shaft and in accordance with EN
61800-5-1:2007.
• 3 × 200-240 V-10 % / +10 %, 50/60 Hz, PE:

68
 English (GB)
9.2.3 Inputs and outputs Screened cable: 0.5 - 1.5 mm2, 28-16 AWG.
Earth reference: Maximum cable length: 500 m excluding
All voltages refer to earth. All currents return to earth. potentiometer.
Absolute maximum voltage and current limits: Potentiometer connected to +5 V, GND, any AI:
Exceeding the following electrical limits may result in Use maximum 10 kΩ.
severely reduced operating reliability and motor life. Maximum cable length: 100 m.
Relay 1: Analog output, AO:
Maximum contact load: 250 VAC, 2 A or 30 VDC, 2 A. Current sourcing capability only.
Relay 2: Voltage signal:
Maximum contact load: 30 VDC, 2 A. • range: 0-10 VDC
GENI terminals: -5.5 to 9.0 VDC or less than 25 • minimum load between AO and GND: 1 kΩ
mADC. • short-circuit protection: Yes.
Other input/output terminals: -0.5 to 26 VDC or less Current signal:
than 15 mADC.
• ranges: 0-20 and 4-20 mADC
Digital inputs, DI:
• maximum load between AO and GND: 500 Ω
Internal pull-up current greater than 10 mA at Vi equal
• open-circuit protection: Yes.
0 VDC.
Internal pull-up to 5 VDC (currentless for Vi greater Tolerance: -0 / +4 % of full scale (maximum-point
coverage).
than 5 VDC).
Certain low logic level: Vi less than 1.5 VDC. Screened cable: 0.5 - 1.5 mm2, 28-16 AWG.
Maximum cable length: 500 m.
Certain high logic level: Vi greater than 3.0 VDC.
Pt100/1000 inputs, Pt:
Hysteresis: No.
Temperature range:
Screened cable: 0.5 - 1.5 mm2, 28-16 AWG.
• Minimum: -30 °C. 88 Ω / 882 Ω.
Maximum cable length: 500 m.
• Maximum: 180 °C. 168 Ω / 1685 Ω.
Open-collector digital outputs, OC:
Measurement tolerance: ± 1.5 °C.
Current sinking capability: 75 mADC, no current
sourcing. Measurement resolution: less than 0.3 °C.
Load types: Resistive or inductive. Automatic range detection, Pt100 or Pt1000: Yes.
Low-state output voltage at 75 mADC: maximum 1.2 Sensor fault alarm: Yes.
VDC. Screened cable: 0.5 - 1.5 mm2, 28-16 AWG.
Low-state output voltage at 10 mADC: maximum 0.6 Use the Pt100 for short wires.
VDC. Use the Pt1000 for long wires.
Overcurrent protection: Yes. LiqTec sensor inputs:
Screened cable: 0.5 - 1.5 mm2, 28-16 AWG. Use Grundfos LiqTec sensor only.
Maximum cable length: 500 m. Screened cable: 0.5 - 1.5 mm2, 28-16 AWG.
Analog inputs, AI: Grundfos Digital Sensor input and output, GDS:
Voltage signal ranges: Use Grundfos Digital Sensor only.
• 0.5 - 3.5 VDC, AL AU Power supplies:
• 0-5 VDC, AU +5 V:
• 0-10 VDC, AU. • output voltage: 5 VDC -5 % / +5 %
Voltage signal: Ri greater than 100 kΩ at 25 °C. • maximum current: 50 mADC (sourcing only)
Leak currents may occur at high operating • overload protection: Yes.
temperatures. Keep the source impedance low. +24 V:
Current signal ranges: • output voltage: 24 VDC -5 % / +5 %
• 0-20 mADC, AU • maximum current: 60 mADC (sourcing only)
• 4-20 mADC, AL AU. • overload protection: Yes.
Current signal: Ri is equal 292 Ω. Digital outputs, relays:
Current overload protection: Yes. Change to voltage Potential-free changeover contacts.
signal.
Minimum contact load when in use: 5 VDC, 10 mA.
Measurement tolerance: -0 / +3 % of full scale
Screened cable: 0.5 - 2.5 mm2, 28-12 AWG.
(maximum-point coverage).

69
English (GB)

Maximum cable length: 500 m. Immunity: The motor fulfils the requirements for
Bus input: industrial areas.
Grundfos GENIbus protocol, RS-485. Contact Grundfos for further information.
Screened 3-core cable: 0.5 - 1.5 mm2, 28-16 AWG. Enclosure class
Maximum cable length: 500 m. Standard: IP55 (IEC 34-5).
Optional: IP66 (IEC 34-5).
9.3 Megging
Insulation class
Do not meg an installation incorporating MGE motors
as the built-in electronics may be damaged. F (IEC 85).

Standby power consumption

9.4 Other technical data
5-10 W.
EMC (electromagnetic compatibility)
Cable entries
Standard used: EN 61800-3.
The table below shows the emission category of the Motor Number and size of cable entries
motor. [kW] 2900-4000 rpm 4000-5900 rpm
C1 fulfils the requirements for residential areas.
0.25 - 1.5 4 × M20 4 × M20
Note that when connected to a public network, 11
kW motors do not comply with the partial weighted 2.2 4 × M20 4 × M20
harmonic distortion (PWHD) requirements of EN
1 × M25 + 4 ×
61000-3-12. If required by the distribution network 3-4 1 × M25 + 4 × M20
M20
operator, compliance can be obtained in the following
way: 1 × M25 + 4 ×
5.5 1 × M25 + 4 × M20
The impedance of the mains cables between the M20
motor and the point of common coupling (PCC) must 1 × M32 + 5 ×
be equivalent to the impedance of a 50 m cable with 7.5 - 11 1 × M32 + 5 × M20
M20
a cross-section of 0.5 mm.
C3 fulfils the requirements for industrial areas.
Cable glands delivered with the pump
Note that when the motors are installed in residential
areas, supplementary measures may be required as Cable
Motor Thread
the motors may cause radio interference. Quantity diameter
[kW] size
[mm]
Emission category 2 5
Motor 0.25 - 2.2 M20 × 1.5
2900-4000 rpm 1 7-14
[kW] 1450-2000 rpm
4000-5900 rpm 4 M20 × 1.5 5
3 - 5.5
0.25 C1 C1 1 M25 × 1.5 9-18
0.37 C1 C1 4 M20 × 1.5 5
7.5 - 11
0.55 C1 C1 1 M32 × 1.5 14-25
0.75 C1 C1
Torques
1.1 C1 C1
Maximum torque
1.5 C1 C1 Terminal Thread size
[Nm]
2.2 C1 C1
L1, L2, L3, L, N M4 1.8
3 C1 C1
NC, C1, C2, NO M2.5 0.5
4 C1 C1
1-26 and A, Y, B M2 0.5
5.5 C3/C1 14) C1
7.5 C3/C1 14) C3/C1 14)
11 - C3/C1 14)

14) C1, if equipped with an external Grundfos EMC filter

70
 English (GB)
9.5 Accessories Sound pressure
The following are the communication interface Maximum level
modules intended for use with the product: speed ISO 3743
Motor Speed
stated on
[kW] nameplate rpm [dB(A)]
Communication rpm 1-phase 3-phase
Protocol
interface module motors motors
GENIbus CIM 50 1500 - 48
2000
LonWorks (Single) CIM 100 2000 - 55
PROFIBUS DP CIM 150 3000 - 57
2.2 4000
Modbus RTU CIM 200 4000 - 64
BACnet MS/TP CIM 300 4000 - 58
5900
Modbus TCP, BACnet IP, 5900 - 68
PROFINET, GiC/GRM IP, CIM 500
EtherNet IP 1500 - 48
2000
2000 - 55
Installing a communication interface module not listed
3000 - 60
above might affect the compliance level of the 3 4000
product. 4000 - 69
4000 - 64
9.6 Sound pressure level 5900
5900 - 74

Sound pressure 1500 - 48

Maximum level 2000
2000 - 55
speed ISO 3743
Motor Speed
stated on 3000 - 61
[kW] nameplate rpm [dB(A)] 4 4000
4000 - 69
rpm 1-phase 3-phase
motors motors 4000 - 64
5900
1500 37 37 5900 - 74
2000
2000 43 43 1500 - 58
2000
0.25 - 3000 50 50 2000 - 61
4000
0.75 4000 60 60 3000 - 61
5.5 4000
4000 58 58 4000 - 69
5900
5900 68 68 4000 - 64
5900
1500 - 37 5900 - 74
2000
2000 - 43 1500 - 58
2000
3000 50 50 2000 - 61
1.1 4000
4000 60 60 3000 - 66
7.5 4000
4000 58 58 4000 - 73
5900
5900 68 68 4000 - 69
5900
1500 - 42 5900 - 79
2000
2000 - 47 3000 - 66
4000
3000 57 57 4000 - 73
1.5 4000 11
4000 64 64 4000 - 69
5900
4000 58 58 5900 - 79
5900
5900 68 68

71
English (GB)

Fields marked with a dash (-) indicate that the motor

is not available in this MGE motor range.

10. Disposing of the product

This product or parts of it must be disposed of in an
environmentally sound way.
1. Use the public or private waste collection service.

2. If this is not possible, contact the nearest

Grundfos company or service workshop.

The crossed-out wheelie bin

symbol on a product means
that it must be disposed of
separately from household
waste. When a product
marked with this symbol
reaches its end of life, take it
to a collection point
designated by the local waste
disposal authorities. The
separate collection and
recycling of such products will
help protect the environment
and human health.

See also end-of-life information at

www.grundfos.com/product-recycling.

11. Document quality feedback

To provide feedback about this document, use your
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72
 Grundfos companies
Argentina Colombia Hong Kong
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Ruta Panamericana km. 37.500industin Km 1.5 vía Siberia-Cota Conj. Potrero Unit 1, Ground floor, Siu Wai industrial
1619 - Garín Pcia. de B.A. Chico, Centre
Tel.: +54-3327 414 444 Parque Empresarial Arcos de Cota Bod. 29-33 Wing Hong Street & 68 King Lam
Fax: +54-3327 45 3190 1A. Street, Cheung Sha Wan
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P.O. Box 2040
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Tel.: +385 1 6595 400 Tel.: +36-23 511 110
Austria Fax: +385 1 6595 499 Fax: +36-23 511 111
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Fax: +43-6246-883-30 Čajkovského 21 Thoraipakkam
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BiH-71000 Sarajevo
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Fax: +387 33 590 465 GRUNDFOS Pumps Eesti OÜ GRUNDFOS (Ireland) Ltd.
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Fax: +55-11 4343 5015 Tel.: +39-02-95838112
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Bulgaria Pompes GRUNDFOS Distribution S.A.
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Slatina District 57, rue de Malacombe GRUNDFOS Pumps K.K.
Iztochna Tangenta street no. 100 F-38290 St. Quentin Fallavier (Lyon) 1-2-3, Shin-Miyakoda, Kita-ku
BG - 1592 Sofia Tel.: +33-4 74 82 15 15 Hamamatsu
Tel.: +359 2 49 22 200 Fax: +33-4 74 94 10 51 431-2103 Japan
Fax: +359 2 49 22 201 Tel.: +81 53 428 4760
E-mail: bulgaria@grundfos.bg
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GRUNDFOS GMBH
Canada Schlüterstr. 33 Kazakhstan
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2941 Brighton Road Tel.: +49-(0) 211 929 69-0 7' Kyz-Zhibek Str., Kok-Tobe micr.
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L6H 6C9 E-mail: infoservice@grundfos.de Tel.: +7 (727) 227-98-55/56
Tel.: +1-905 829 9533 Service in Deutschland:
Fax: +1-905 829 9512 kundendienst@grundfos.de
Korea
GRUNDFOS Pumps Korea Ltd.
China Greece 6th Floor, Aju Building 679-5
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10F The Hub, No. 33 Suhong Road 20th km. Athinon-Markopoulou Av. Seoul, Korea
Minhang District P.O. Box 71 Tel.: +82-2-5317 600
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Tel.: +86 21 612 252 22 Tel.: +0030-210-66 83 400
Fax: +86 21 612 253 33 Fax: +0030-210-66 46 273
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SIA GRUNDFOS Pumps Latvia
Deglava biznesa centrs
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LV-1035, Rīga,
Tel.: + 371 714 9640, 7 149 641
Fax: + 371 914 9646
Grundfos companies

Lithuania Serbia Turkey

GRUNDFOS Pumps UAB Grundfos Srbija d.o.o. GRUNDFOS POMPA San. ve Tic. Ltd.
Smolensko g. 6 Omladinskih brigada 90b Sti.
LT-03201 Vilnius 11070 Novi Beograd Gebze Organize Sanayi Bölgesi
Tel.: + 370 52 395 430 Tel.: +381 11 2258 740 Ihsan dede Caddesi
Fax: + 370 52 395 431 Fax: +381 11 2281 769 2. yol 200. Sokak No. 204
www.rs.grundfos.com 41490 Gebze/ Kocaeli
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7 Jalan Peguam U1/25 GRUNDFOS (Singapore) Pte. Ltd. E-mail: satis@grundfos.com
Glenmarie industrial Park 25 Jalan Tukang
40150 Shah Alam, Selangor Singapore 619264 Ukraine
Tel.: +60-3-5569 2922 Tel.: +65-6681 9688 ТОВ "ГРУНДФОС УКРАЇНА"
Fax: +60-3-5569 2866 Faxax: +65-6681 9689 Бізнес Центр Європа
Столичне шосе, 103
Mexico Slovakia м. Київ, 03131, Україна
Bombas GRUNDFOS de México GRUNDFOS s.r.o. Tel.: (+38 044) 237 04 00
S.A. de C.V. Prievozská 4D 821 09 BRATISLAVA Fax: (+38 044) 237 04 01
Boulevard TLC No. 15 Tel.: +421 2 5020 1426 E-mail: ukraine@grundfos.com
Parque industrial Stiva Aeropuerto sk.grundfos.com
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Tel.: +52-81-8144 4000
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Fax: +52-81-8144 4010 GRUNDFOS LJUBLJANA, d.o.o. P.O. Box 16768
Leskoškova 9e, 1122 Ljubljana Jebel Ali Free Zone, Dubai
Netherlands Tel.: +386 (0) 1 568 06 10 Tel.: +971 4 8815 166
GRUNDFOS Netherlands Fax: +386 (0)1 568 06 19 Fax: +971 4 8815 136
Veluwezoom 35 E-mail: tehnika-si@grundfos.com
1326 AE Almere United Kingdom
Postbus 22015
South Africa GRUNDFOS Pumps Ltd.
1302 CA ALMERE GRUNDFOS (PTY) LTD Grovebury Road
Tel.: +31-88-478 6336 16 Lascelles Drive, Meadowbrook Estate Leighton Buzzard/Beds. LU7 4TL
Fax: +31-88-478 6332 1609 Germiston, Johannesburg Tel.: +44-1525-850000
E-mail: info_gnl@grundfos.com Tel.: (+27) 10 248 6000 Fax: +44-1525-850011
Fax: (+27) 10 248 6002
New Zealand E-mail: lgradidge@grundfos.com U.S.A.
GRUNDFOS Pumps NZ Ltd. Global Headquarters for WU
17 Beatrice Tinsley Crescent
Spain 856 Koomey Road
North Harbour Industrial Estate Bombas GRUNDFOS España S.A. Brookshire, Texas 77423 USA
Albany, Auckland Camino de la Fuentecilla, s/n Phone: +1-630-236-5500
Tel.: +64-9-415 3240 E-28110 Algete (Madrid)
Fax: +64-9-415 3250 Tel.: +34-91-848 8800 Uzbekistan
Fax: +34-91-628 0465 Grundfos Tashkent, Uzbekistan
Norway The Representative Office of Grundfos
GRUNDFOS Pumper A/S
Sweden Kazakhstan in Uzbekistan
Strømsveien 344 GRUNDFOS AB 38a, Oybek street, Tashkent
Postboks 235, Leirdal Box 333 (Lunnagårdsgatan 6) Tel.: (+998) 71 150 3290 / 71 150 3291
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Tel.: +47-22 90 47 00 Tel.: +46 31 332 23 000
Fax: +47-22 32 21 50 Fax: +46 31 331 94 60

Poland Switzerland
GRUNDFOS Pompy Sp. z o.o. GRUNDFOS Pumpen AG
ul. Klonowa 23 Bruggacherstrasse 10
Baranowo k. Poznania CH-8117 Fällanden/ZH
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Tel.: (+48-61) 650 13 00 Fax: +41-44-806 8115
Fax: (+48-61) 650 13 50 Taiwan
Portugal GRUNDFOS Pumps (Taiwan) Ltd.
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Apartado 1079 Tel.: +886-4-2305 0868
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Fax: +351-21-440 76 90 GRUNDFOS (Thailand) Ltd.
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S-PARK BUSINESS CENTER, Clădirea Tel.: +66-2-725 8999
A2, etaj 2 Fax: +66-2-725 8998
Str. Tipografilor, Nr. 11-15, Sector 1, Cod
013714
Bucuresti, Romania
Tel.: 004 021 2004 100
E-mail: romania@grundfos.ro
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06.2025
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