Precision Digital PD6080 - Manual (Page 55)

PD6080/PD6081 Super Snooper Modbus Scanner Instruction Manual
55
Low Alarm with Fail-Safe Operation (Set < Reset)
Reset
Set
Input
Relay
LED
Automatic (non-latching)
de-energized
energized
on
off
Relay
LED
Automatic or Manual (non-latching)
ACK
pressed
Relay
LED
Manual (latching)
ACK
pressed
Relay
LED
Manual only after passing above Reset (latching with clear)
ACK
pressed
Note: Relay coil is energized in non-alarm condition.
In case of power failure, relay will go to alarm state.