Document No: LT0119 F3200 Operator's Manual
General Display & Keypad Operation
Issue 2.04 29 July 2002 Page 4-3
4.1.2 16 LED DISPLAY BOARD LEDS
When these boards are fitted they provide 3 LEDs per zone or module relay. For a
networked system the LED display boards display the status of local zones and module
relays only.
Any of the LEDs may also be controlled by an output logic equation, in which case the
behaviour of the LED depends on how it is programmed.
For a zone the 3 LEDs are interpreted as follows:
LED
State Interpretation
ALM Flashing Unacknowledged alarm, zone is mapped to FFCIF
(zone mapped to MAF or non-MAF alarms mapped to
FFCIF).
Steady Acknowledged alarm in zone mapped to FFCIF, or
Alarm in zone not mapped to FFCIF
or Alarm in zone which is isolated.
ISO Flashing Zone is in Auto-Reset mode (walk test).
Steady Zone is isolated.
FLT Steady Zone is in fault.
(Independent of mapping and isolation)
NOTE: For an NDU in New Zealand mode zone faults are always non-latching, but the
LED indicators are always latching until the zone is reset.
For a module relay the 3 LEDs are interpreted as follows:
LED
State Interpretation
ALM Steady 1. If not isolated then the relay is currently energised.
2. If isolated, then the relay is currently de-energised
but would be energised if the relay was not isolated.
ISO Steady Relay is isolated.
FLT Steady Fault in wiring from relay to its ancillary interface device
(i.e. supervision fault).
4.1.3 NDU NEW ZEALAND MODE DISPLAY EXTENDER BOARD LEDS
NORMAL LED - on steady means normal
- off means fire, defect or abnormal condition is present
FIRE LED - flashing means alarm present, otherwise off
DEFECT LED - normally off
- flashing for defect present
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