English (GB)
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10.42.1 "Alternating operation"
Alternating operation functions as a duty/standby
operating mode and is possible with two motors of
same size and type connected in parallel. The main
purpose of the function is to ensure an even amount
of running hours and to ensure that the other motor
starts if the duty motor stops due to an alarm.
You can choose between two alternating operation
modes:
• "Alternating operation, time"
Change from one motor to the other is based on
time.
• "Alternating operation, energy"
Change from one motor to the other is based on
energy consumption.
If the duty motor fails, the other motor starts.
10.42.2 "Backup operation"
"Backup operation" is possible with two motors of
same size and type connected in parallel.
One motor is operating continuously. The backup
motor is operated for a short time each day to
prevent seizing up. If the duty motor stops due to a
fault, the backup motor starts.
10.42.3 Setting a multimotor system
You can set a multimotor system in the following
ways:
• Grundfos GO and wireless motor connection
• Grundfos GO and wired motor connection
• Advanced control panel and wireless motor
connection
• Advanced control panel and wired motor
connection.
See step-by-step descriptions below.
Grundfos GO and wireless motor connection
1. Power on both motors.
2. Establish contact to one of the motors with
Grundfos GO.
3. Set the needed analog and digital inputs via
Grundfos GO according to the connected
equipment and the required functionality. See
section 10.39 ""Assisted pump setup"" (Assisted
motor setup).
4. Assign a name to the motor using Grundfos GO.
See section 10.33 "Pump name" (motor name).
5. Disconnect Grundfos GO from the motor.
6. Establish contact to the other motor.
7. Set the needed analog and digital inputs via
Grundfos GO according to the connected
equipment and the required functionality. See
section 10.39 ""Assisted pump setup"" (Assisted
motor setup).
8. Assign a name to the motor using Grundfos GO.
See section 10.33 "Pump name" (motor name).
9. Select the "Assist" menu and ""Setup of
multi-pump system"".
10. Select the desired multimotor function. See
sections 10.42.1 "Alternating operation" and
10.42.2 "Backup operation".
11. Press [>] to continue.
12. Set the time for motor changeover, i.e. the time at
which the alternation between the two motors is
to take place.
13. Press [>] to continue.
14. Select "Radio" as the communication method to
be used between the two motors.
15. Press [>] to continue.
16. Press "Select pump 2" (motor 2).
17. Select the pump from the list.
18. Press [>] to continue.
19. Confirm the setting by pressing [Send].
20. Press [Finish] in the "Setup complete" dialog box.
21. Wait for the green indicator light in the middle of
Grundfos Eye to light up.
This step applies only if you have selected
"Alternating operation, time" and if the
motors are fitted with FM 300.
Use the [OK] or button to identify the
pump.
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