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8.9 Resetting to default settings
You can reboot the AR control unit when you connect the power
supply. The electronics is then reset to the default settings in the
technical data.
The pump is disconnected from the power supply.
1. Simultaneously press the "Up" and "Down" buttons and hold
them down.
2. Switch on the power supply.
– "boot" appears in the display.
3. Release the "Up" and "Down" buttons.
– All modified settings are reset to the default settings.
8.10 Creating a master/slave application
You can connect several secondary pumps and control the
secondary pumps (slaves) via the first pump (master).
Risk of damage to secondary pump!
The current signal is not electrically isolated and can
damage slave pumps.
Caution
Do not control slave pumps with the current signal.
Only control them with the electrically isolated
contact input signal!
8.10.1 Master
All operating modes in manual, contact, or current control are
available for the master pump:
•
Manual
•
Contact with multiplier or divisor
•
Current control.
Select the output signal of the master pump in the service level
(relay 1) (output socket 3):
•
Stroke signal (emits one output signal per stroke).
8.10.2 Slave
The following operating modes are available for slave pumps in
contact control (input socket 4):
•
Contact with multiplier or divisor.
The slave pump settings are implemented
Note
independently of the master pump settings.
Risk of malfunction or damage to the pump!
Caution
Do not throw or drop the pump.
Unused contact inputs from the master pump are
forwarded to the slave pumps. They are processed
Caution
on the slave pumps according to the slave pump
settings!
9. Disposal
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.
26
Subject to alterations.
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