N 93-585-83 Issue 2 AB Page 11 of 25 © Protec Fire Detection PLC 2015
7.4 Supply Fault
The 3500 regularly check the internal power supply. If a fault has been detected in the power supply
of the 3500 the ‘General Fault’ indicator will be illuminated accompanied by the ‘Power Fault’
indicator. This may be due to local mains supply failure or because the internal stand-by batteries or
circuitry are faulty.
7.5 Aux Supply Fault
The 3500 monitors the state out the aux supply output and if a fault has been detected the ‘General
Fault’ indicator will be illuminated accompanied by the ‘Aux Supply Fault’ indicator. There may no
longer be an auxiliary supply to external devices or the auxiliary devices are drawing too much
current.
8.0 3500 Disablement Indications
8.1 Zone Disablement
The 3500 displays any disablements of the detection zones on the zone indicators. The ‘General
Disablement’ indicator will be illuminated accompanied by the relevant zone indicator
Fires and faults are prevented from a disabled zone. Detectors and Manual Call Points in
this zone will not trigger the 3500 into a fire condition.
8.2 Alarm Disablement
The 3500 illuminates the ‘General Disablement’ indicator accompanied by the 'Alarms Disabled'
indicator.
Activation to and faults from alarm outputs are prevented. Sounders will not operate in
the event of a fire.
9.0 3500 Test Indications
If any of the 3500 zones are in test mode the ‘General Test’ indicator will be illuminated
accompanied by the relevant zone indicator illuminated steady yellow.
10.0 Miscellaneous Indications
10.1 Power on Indication
This indication illuminates when the 3500 is powered up from mains or its internal batteries.
10.2 Outputs Delayed Indication
This indicator will be illuminated if the commissioning engineer has programmed a delay to the alarm
outputs.
The alarms may not activate immediately in the event of a fire.
10.3 Access Level Indication
If the 3500 panel is in access level 2 then the ‘Access Level’ will be illuminated. If the 3500 panel is
in access level 3 then the ‘Access Level’ will be flashing.