Model YPP6300 Pulse Input Rate/Totalizer
Instruction Manual
64
Latching Relay (
Lt-Clr
)
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
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.
Acknowledging Relays
There are two ways to acknowledge relays programmed for manual
reset:
Via the programmable front panel function keys F1-F3 (Default:
F3 assigned to ACK)
Remotely via a normally open pushbutton wired across one of the
digital inputs and the +5 V terminals on the digital I/O modules.
When the ACK button or the assigned digital input is closed, all relays
programmed for manual reset are acknowledged.
Figure 19: Acknowledge Relays w/Function Key or Digital Input
Summary of Contents for YPP6300
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