Precision Digital PD6300 - Manual (Page 54)

Model PD6300 Pulse Input Rate/Totalizer Instruction Manual
54
Relay and Alarm Operation Diagrams
The following graphs illustrate the operation of the relays, status LEDs,
and ACK button.
High Alarm Operation (Set > Reset)
Relay
LED
Input
de-energized
energized
off
on
Relay
LED
Automatic or Manual (non-latching)
ACK
pressed
Relay
LED
Manual (latching)
ACK
pressed
Relay
LED
Manual only after passing below Reset (latching with clear)
ACK
pressed
Set
Reset
Automatic (non-latching)
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.