A-Led Indications Of General States Of Fire Panel; B-Led Indications Of Faults - SD3 ALPHA 2 Operating & Installation Manual

2-1-1 A - LED indications of general states of fire panel
LED POWER
Is steady on if the panel is working with the main power source (presence of mains),
flashes with a short period of ignition if system lacks mains voltage for less than
20min (working with batteries), it is off if the mains lacks mains voltage for more than
20 minutes (fault) and flashes in normal way if the panel is power supplied by mains
but fault is present in the mains (voltage outside from the limits: < 21V or > 30V).
LED FAULT
It indicates that a condition of fault is present in panel.
LED DISABLED
If steady on, it indicates that a condition of disabling is present in panel (sounders or
zones disabled); it flashes during the phase of reset
LED ALARM
If steady on, it indicates that a condition of alarm is present in panel and that the
corresponding output is activated.
If blinking with long period of ignition and short extinction, it indicates pre alarm or
delayed alarm in course.
2-1-2 B - LED indications of faults
LED POWER FAULT
If steady on, it indicates that the power supply of panel is not correct because of one
of the following conditions of anomaly:
• lack of mains voltage since more than 20 minutes
• The local power supply voltage of panel is outside from the limits
• the battery is disconnected or inefficient
• the circuit of battery charging is out of order
Flashing of the led indicates that the power supply is correct but some anomaly
conditions had occurred previously (memorised signalling).
LED FAULT EARTH
If steady on, it indicates a condition of low isolation between one of the electrical
parts and the earth.
If flashing, it indicates a correct state but some anomaly conditions had occurred
previously (memorised signalling).
LED SOUNDERS FAULT
If steady on, it indicates the presence of fault on the monitored line that commands
the alarm actuators (sounders line balance fault).
If flashing, it indicates a correct state but some anomaly conditions had occurred
previously (memorised signalling).
LED CPU FAULT
It indicates that the microcontroller of panel is temporary or permanently out of
control.
This type of anomaly can be caused by strong disturbances of electrostatic origin,
from an abrupt decrease of the power supply voltage or by a physical anomaly of the
board of the panel. In this last case the signal can be shut but it is not resettable.
In the other cases it is possible to reset the signalization with the dedicated
pushbutton by following the procedure described in the point 3.5; if it has no effect
(error in the configuration memory) it is enough to activate and deactivate the
configuration procedure as it is described in the point 4.1.
OPERATING & INSTALLATION
MANUAL - Rev.2
Index : E
Date : 30/07/2007
Page : 8/32