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ZONESENSE DH4
OPERATORS MANUAL
6.3 Indicators
There are 23 LED indicators on the front panel of the FACP. The indicators are in three groups.
There are 10 system status indicators, 5 control indicators and 8 zone indicators
All indicators are visible at access level one. If flashing indicators are used then the on / off periods
shall not be less than 0.25 seconds and the flash frequencies shall not be less than:
1Hz for Alarm indications (0.5 second on, 0.5 seconds off)
0.5Hz for fault indications (1 second on and 1 second off)
2 Hz for rapid flashing (0.25 seconds on and 0.25 seconds off)
0.25 Hz for slow flashing (2 seconds on and 2 seconds off)
Where the same indicator is used for fault and disable then the fault indicator shall flash and the
disable shall be steady. The disable condition has display priority.
6.3.1 System Status Indicators
Power – Green
Illuminates steady when the FACP is supplied with mains power and flashes if mains fail.
Power Fault – Amber
Illuminated steady when there is a fault with the system power supply. Fault can be no mains, high
charger voltage, low battery voltage or missing / damaged battery (if batteries are fitted).
Will not be illuminated for a low battery voltage or missing battery if the FACP has been configured
so that battery monitoring has been disabled.
Flashes at the fault rate when the power supply has not been calibrated.
System Fault - Amber
Indicates a failure of the FACP to provide the mandatory functions such as software or hardware
failure.
This indicator is latched ON, until cleared by master reset.
If the processor on the main card undergoes a watchdog condition, then the System fault indicator
will be illuminated ON and steady, and remain ON until cleared by a master reset.
Controls Enabled - Amber
Illuminates steady to indicate the FACP is at access level 2.
Auxiliary Power Fault - Amber
Illuminated steady on a fault condition to the DC feed common to the auxiliary 24VDC feed.
Fire Output Disabled - Amber
Illuminates steady if the “Fire Output” relay is disabled.
Fault Output Relay Disabled - Amber
Illuminates steady if the “Fault Output” relay is disabled.
Door Holder Output Status - Amber
This indicates a disable condition (steady). Display priority: Disable (steady) then fault (flash)