2PAA118721 | Quick Installation Guide LD 810HSE Ex 25
LED Indicators in Redundant Mode (RUN, ERR, and RDL)
The redundancy link LED is used to indicate if trafc via the serial line is per-
formed. It will ash green if a valid message is received. It will switch to red
if serial communication is lost and it will be off if no serial response has been
received after startup.
LEDs Meaning
PWR
ERR
RUN
RDL
Start-up phase (approx.7 seconds)
During this phase, the redundancy role is determined.
PWR
ERR
RUN
RDL
Non redundant device, ready
The device is operational; it is not part of a redundant set.
The primary device is set to redundant mode.
The device is operational, acting as primary device in a
redundant set. The secondary device is ready.