Terminal Type
Function
23
GND
Protective earth.
Pressure sensor: GND, 0 V. Connect the green wire to this terminal.
25
GDS TX
Grundfos Digital Sensor output.
24
GDS RX
Grundfos Digital Sensor input.
7
AI2
External sensor.
Pressure sensor: Temperature signal, 0.5 to 3.5 V. Connect the yellow wire to this terminal.
4.5 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 appear from the table below:
Grundfos Eye is off
The power is off.
Operation
Pump running
Ready
Alarm
Warning
Operating mode
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
-
Grundfos Eye is rotating green
The pump or motor runs in
Normal
mode in open or closed loop.
Operation
Pump running
Ready
Alarm
Warning
Operating mode
C
NC
NO
C
NC
NO
C
NC
NO
NC
NO
C
NC
NO
C
Normal
Min.
or
Max.
Grundfos Eye is rotating green
The pump or motor runs in
Manual
mode.
Operation
Pump running
Ready
Alarm
Warning
Operating mode
C
NC
NO
C
NC
NO
NC
NO
C
NC
NO
C
NC
NO
C
Manual
Grundfos Eye is permanently green
The pump or motor is ready for operation but is not running.
Operation
Pump running
Ready
Alarm
Warning
Operating mode
NC
NO
C
NC
NO
C
C
NC
NO
NC
NO
C
NC
NO
C
Stop
Grundfos Eye is rotating yellow
Warning, but the pump or motor is running.
15
English (GB)
