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16. Signal relays
The pump 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.
Description
The power is off.
The pump runs in
"Normal" mode.
The pump runs in
"Manual" mode.
The pump is in operating
mode "Stop".
Warning, but the pump is
running.
Warning, but the pump
runs in "Manual" mode.
Warning, but the pump
was stopped via a "Stop"
command.
Alarm, but the pump is
running.
Alarm, but the pump
runs in "Manual" mode.
The pump has stopped
due to an alarm.
Contact position of signal relays when activated
Grundfos Eye
Operation
Off
C
NO
NC
Green, rotating
C NO NC
Green, rotating
C NO NC
Green, steady
C
NO
NC
Yellow, rotating
C NO NC
Yellow, rotating
C NO NC
Yellow, steady
NO
NC
C
Red, rotating
C NO NC
Red, rotating
C NO NC
Red, flashing
C
NO
NC
Running
Ready
Alarm
NO
NC
NO
C
NO
NC
C
C
C NO NC
C NO NC
C
NO
C NO NC
NO
NC
NO
C
C
C NO NC
NO
C
NO
NC
C
C NO NC
C NO NC
C
NO
C NO NC
NO
NC
C
NO
C
C NO NC
C
NO
NO
NC
C
C NO NC
NO
NC
C NO NC
C
C NO NC
C NO NC
NO
NC
C
NO
NC
NO
NC
C NO NC
C
C
Operating
mode
Warning
-
NC
NO
NC
C
"Normal", "Min."
or "Max."
NC
NO
NC
C
"Manual"
NC
C
NO
NC
"Stop"
NC
C
NO
NC
"Normal", "Min."
or "Max."
NC
C NO NC
"Manual"
NC
C NO NC
"Stop"
C NO NC
NC
"Normal", "Min."
or "Max."
C
NO
NC
"Manual"
NO
NC
C
"Stop"
C
NO
NC
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