UNIPOINT OPERATING MANUAL 2306M5001 MAN0638 ISSUE 7 01/2011
14
8.2 Normal Operation LCD Event Codes
The display event codes are shown below:
8.3 Display, Sounder and Relay Operation
The table below shows the default operation of the display, sounder and relays for given
events.
*LED ash frequency: Alarm = 2Hz, Fault = 1Hz and Inhibit = 0.5Hz
8.4 Accept/Resetting Alarms
In normal operation, the X button on the controller front panel or a switch connected to the
remote reset terminal is used to reset/accept alarm events. The effect of reset/accept
dependent on gas reading and alarm latching setting is described below:
Note: If the controller is in inhibit when an alarm threshold is exceeded the alarm LED only will
operate. See section 10 for details of how the relay delay and hold function effects the
operation of the unit.
NORMAL OPERATION DISPLAY TEXT CODES
CODE EVENT TYPE
A - 1 Alarm point 1 exceeded
A - 2 Alarm point 2 exceeded
A - 3 Alarm point 3 exceeded
O F F All outputs disabled
F X X Fault. XX=Fault code
I n h Remote or eld* inhibit
EVENT LCD LEDS* SOUNDER RELAY
ALARM FAULT/INH A1 A2 A3 F
Alarm 1 threshold exceeded A-1 ashing off on X
Alarm 2 threshold exceeded A-2 ashing off on X X
Alarm 3 threshold exceeded A-3 ashing off on X X X
Fault FXX off ashing on X
Inhibit Inh off ashing off X
Overange Or/A3 ashing off on X X X
Gas reading still exceeds alarm threshold Gas reading below alarm threshold
Latched alarm Sounder stops. Flashing alarm LED changes
to steady. Gas reading and alarm code
displayed on LCD. Alarm relay remains in
alarm state.
Sounder stops. Alarm LED is turned off. The
LCD alarm code clears. Alarm relay returns to
original state.
Unlatched alarm Sounder stops. Flashing alarm LED changes
to steady. Gas reading and alarm code
displayed on LCD. Alarm relay remains in
alarm state.
Alarm indications and relay operation reset
automatically without need for reset/accept.
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