Alarm Relay Off Delay; Maintenance - Honeywell Unipoint 2306B1000 Operating Instructions Manual

UNIPOINT OPERATING MANUAL
• If during the delay the unit is placed into INHIBIT by either the external inhibit or by entering
the configuration mode, the delay will be reset. On exiting the inhibit mode the relay output
will be updated.
• If during the delay a FAULT is signaled, the delay will continue and the relay output updated
when the delay time has expired. (The alarm will continue to be signaled on the sounder,
LED, and LCD after the fault occurs. The relay output will be updated to reflect the alarm
when the time expires.)

11.2 Alarm Relay Off Delay

The programmable alarm relay hold operates in the following manner.
• If the hold time is set, then in the event of the GAS CONCENTRATION FALLING below the
alarm threshold after previously exceeding the alarm threshold for a period of time greater
than the delay time (i.e. the relay output is reflecting the active alarm) and the alarm
threshold is configured as NON-LATCHING the following occurs:
• The LCD, LED, and buzzer will stop signaling the alarm.
• The alarm relay does not signal the absence of the alarm immediately.
• The hold time counts down.
• When the hold time expires, the relay output is updated to signal the absence of
the alarm.
• If during the hold time the gas CONCENTRATION RISES back above the alarm threshold,
the LCD, LED, and buzzer signal the re-occurrence of the alarm and the hold time is reset.
• If during the hold time the ACCEPT/RESET EXTERNAL INPUT/KEY is activated, the relay
output is updated immediately.
• If during the hold time the unit is placed into INHIBIT by either the external inhibit or by
entering the configuration mode, the hold time is reset. On exiting the inhibit mode the relay
output is updated immediately.
• If during the hold time a FAULT is signaled, the hold time is reset and the relay output
is updated immediately.
• If the alarm is configured as LATCHING, the hold time has no effect upon the operation of
the unit. i.e. The signaling of a latched alarm via the relay output will removed immediately
the accept/reset external input/key is activated.

12 Maintenance

The Unipoint controller has no user serviceable parts. Honeywell Analytics recommend that the
controller's configuration and operation are checked annually.
The gas detectors connected to the controller should be checked and if necessary zero and
span calibrated by following the procedures detailed in their user guides.
2306M5001 MAN0638 ISSUE 7 01/2011
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