Precision Digital PD6080 - Manual (Page 58)

PD6080/PD6081 Super Snooper Modbus Scanner Instruction Manual
58
Signal Loss or Loop Break Relay Operation
The following graph shows the loop break relay operation for a high alarm relay.
Relay
LED
Input
Loop Break = Ignore
de-energized energized
off on
Relay
LED
Loop Break = Off
Relay
LED
Loop Break = On
Set
Reset
When the scanner detects a break in the 4-20 mA loop, the relay will go to one of the following selected
actions:
1. Turn On (Go to alarm condition)
2. Turn Off (Go to non-alarm condition)
3. No action (no Act) (Processed as a low signal condition)