Precision Digital PD6000 - Manual (Page 49)

Model PD6000 Analog Input Process Meter Instruction Manual
49
High Alarm with Fail-Safe Operation (Set > Reset)
Relay
LED
Input
Automatic (non-latching)
energized
de-energized
off
on
Relay
LED
Automatic or Manual (non-latching)
ACK
pressed
Relay
LED
Manual (latching)
ACK
pressed
Relay
LED
Manual only after passing below Reset (latching with clear)
ACK
pressed
Set
Reset
Note: Relay coil is energized in non-alarm condition.
In case of power failure, relay will go to alarm state.