PD8-6262 Explosion-Proof Dual Analog Input Flow Rate/Totalizer
Instruction Manual
43
Relay and Alarm Operation
Diagrams
The following graphs illustrate the operation of the
relays, status LEDs, and ACK button.
High Alarm Operation (Set > Reset)
For Manual reset mode, ACK can be pressed anytime
to turn "off" relay. To detect a new alarm condition,
the signal must go below the set point, and then go
above it.
Low Alarm Operation (Set < Reset)
For Manual reset mode, ACK can be pressed anytime to turn
"off" relay. To detect a new alarm condition, the signal must
go below the set point, and then go above it.
High Alarm with Fail-Safe
Operation (Set > Reset)
Note:
Relay coil is energized in non-alarm condition. In case
of power failure, relay will go to alarm state.
Low Alarm with Fail-Safe
Operation (Set < Reset)
Note:
Relay coil is energized in non-alarm condition. In case
of power failure, relay will go to alarm state.
