Model PD6000 Analog Input Process Meter Instruction Manual
52
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
)
Aut 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 condi-
tion.
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. Ac-
knowledging the alarm even if the alarm condition is still present resets
the relay and turns off the LED.
