Precision-digital PD6000 User Manual Page 53

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Model PD6000 Analog Input Process Meter Instruction Manual
53
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 meter 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. Ignore (Processed as a low signal condition)
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