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4.2 ALARM OPERATION
The ECO-A-X has front panel LED indicators for Alarm 1(ALM1), Alarm 2(ALM2) and Alarm
3(FAIL). With 2-Wire 4-20mA operation, to conserve power, alarm LED’s only flash during alarm
events.
4.2.1 ALARM 3 – UNDERSTANDING FAULT / LEVEL OPERATION
The “A3”(FAIL) alarm is typically dedicated to FAULT conditions indicating sensor failures or “out
of measurement range” conditions. However, some applications require a third level alarm. The
A3 menu is identical to A1 & A2 and may be set to trip at an upscale level value. A3 WILL ALSO
TRIP WITH MISSING OR FAILED SENSORS REGARDLESS OF THE LEVEL VALUE!
CAUTION: Missing or failed sensors always trip Alarm 3. This is true even with A3 configured as
a level alarm and it must be accepted that A3 level alarm events might be caused by the
monitored level, or, by a missing or failed sensor.