LED Description Comments
Green
RTU has set the pump to run. The pump relay is activated.
Flashingred
Pump is blocked. Possible causes:
230 V mains power failure
Pump start is delayed after a power failure.
Red
Pump is blocked. Possible causes:
External blocking signal is active.
External Manual-0-Auto switch is set to
blocked.
(Ex-classified environment) No liquid is
detect in the sump.
Remote block from SCADA system.
Sump level is low.
Flashingred
New alarm has occurred. The alarm is not acknowledged.
An alarm remains active. The alarm is acknowledged.
Off
No active alarms
Flashing green
An alarm is being sent to:
SCADA system,
or
SMS receivers.
Green
RTU is set to send alarms to:
SCADA system,
or
SMS receivers.
Off
No alarm is sent outside the RTU.
Monitor Status and Alarms
APP 541 User manual 39
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