Signal Relays - Grundfos LCSE Installation And Operating Instructions Manual

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