Signal Relays - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

18. Signal relays

The motor has two outputs for potential-free signals via two
internal relays.
The signal outputs can be set to "Operation", "Running", "Ready",
"Alarm",or "Warning".
The functions of the two signal relays are presented in the table
below:
Description
Power off.
Pump running in "Normal"
mode.
Pump running in "Manual"
mode.
Pump in operating mode
"Stop".
Warning, but the pump is
running.
Warning, but the pump is
running in "Manual"
mode.
Warning, the pump
hasbeen stopped by the
"Stop" command.
Alarm, but the pump is
running.
Alarm, but the pump is
running in "Manual"
mode.
Pump stopped due to an
alarm.
Contact position for signal relays when activated
Grundfos Eye
Operation
Off
NO
C
Green, rotating
C NO NC
C NO NC
Green, rotating
Green, steady
C NO
Yellow, rotating
C NO NC
Yellow, rotating
C NO NC
Yellow, steady
NO
C
Red, rotating
C NO NC
Red, rotating
C NO NC
Red, flashing
NO
C
Running Ready
NC NO NC NO NC
C C
C NO NC C NO NC
C NO NC
NO NC
C
C NO NC
NC C NO NC
C NO NC C NO NC
C NO NC
C NO NC
C NO NC
NC NO NC
C
C NO NC
NO NC
C
C NO NC
NO NC
C
NC NO NC NO NC
C C
Operating
mode
Alarm Warning
-
NO NC NO NC
C C
Normal, Min.
or Max.
NO NC NO NC
C C
Manual
NO NC NO NC
C C
Stop
C NO NC C NO NC
Normal, Min.
or Max.
C NO NC
NO NC
C
Manual
C NO NC
C NO NC
Stop
C NO NC
NO NC
C
Normal, Min.
or Max.
C NO NC
NO NC
C
Manual
C NO NC
NO NC
C
Stop
C NO NC
NO NC
C
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