P
RO
V
U
™ PD6200 Analog Input Rate/Totalizer
Instruction Manual
31
Non-Latching Relay (
Auto
)
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 with Manual
Reset (
A-nman
)
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.
In addition, the relay can be manually reset while the
alarm condition still exists, but the LED will stay on
until the meter returns to the normal condition.
Latching Relay with Clear (
LatcH
)
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.
Latching Relay (
Lt-Clr
)
In this application, the meter is set up for manual reset
only after the signal passes the reset point (alarm
condition has cleared). Acknowledging the alarm while it
is still present has no effect on either the LED or the
relay. When the alarm is acknowledged after it returns to
the normal state, the LED and the relay go off. Notice
that the LED remains on, even after the meter returns to
the normal condition. This is because, for latching relays,
the alarm LED reflects the status of the relay, regardless
of the alarm condition.
Automatic reset only
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Ack (No effect)
On
On
Normal
Off
Off
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
Manual reset any time
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Ack
Off
Off
Manual reset only after alarm condition has
cleared
Condition
LED
Relay
Normal
Off
Off
Alarm
On
On
Ack (No effect)
On
On
Normal
On
On
Ack
Off
Off
