4.3.7.2 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.
Grundfos Eye is off
The power is off.
Operation
Pump running
C
NO
NC
C
NO
Grundfos Eye is rotating green
The pump or motor runs in Normal mode in open or closed loop.
Operation
Pump running
C
NO
NC
C
NO
Grundfos Eye is rotating green
The pump or motor runs in Manual mode.
Operation
Pump running
C
NO
NC
C
NO
Grundfos Eye is permanently green
The pump or motor is ready for operation but is not running.
Operation
Pump running
C
NO
NC
C
NO
14
Ready
NC
C
NO
NC
Ready
NC
C
NO
NC
Ready
NC
C
NO
NC
Ready
NC
C
NO
NC
The functions of the two signal relays appear from
the table below:
Alarm
Warning
C
NO
NC
C
NO
Alarm
Warning
C
NO
NC
C
NO
Alarm
Warning
C
NO
NC
C
NO
Alarm
Warning
C
NO
NC
C
NO
Operating mode
-
NC
Operating mode
Normal
Min.
or
Max.
NC
Operating mode
Manual
NC
Operating mode
Stop
NC