Precision Digital PD6310 - Manual (Page 63)

Model PD6210 & PD6310 Batch Controllers Instruction Manual
63
Signal Loss or Loop Break Relay Operation
The following graph shows the loop break 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 controller 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 (Process as a low signal condition)