Precision Digital PD6400 - Manual (Page 58)

Model PD6400 High Voltage & Current Meter Instruction Manual
58
Non-Latching Relay (Auto)
Automatic reset only
Condition LED Relay
Normal Off Off
Alarm On On
Ack (No effect) On On
Normal Off Off
In this application, the meter is set up for automatic reset (non-latching
relay). Acknowledging the alarm while it is still present has no effect on
either the LED or the relay. When the alarm finally goes away, the relay
automatically resets and the LED also goes off.
Non-Latching Relay (A-man)
Automatic + manual reset at any time
Condition LED Relay
Normal Off Off
Alarm On On
Normal Off Off
Next Alarm On On
Ack On Off
Normal Off Off
In this application, the meter is set up for automatic and manual reset at
any time (non-latching relay). The LED and the relay automatically reset
when the meter returns to the normal condition.
The next time an alarm occurs, the operator acknowledges the alarm
manually while the alarm condition still exists. This causes the relay to
reset, but the LED stays on until the meter returns to the normal
condition.
Latching Relay (LatcH)
Manual reset any time
Condition LED Relay
Normal Off Off
Alarm On On
Ack Off Off
In this application, the meter is set up for manual reset at any time.
Acknowledging the alarm even if the alarm condition is still present
resets the relay and turns off the LED.