FireClass DUO-CEL - Appendix; EN54 Mandatory Functions; Safe State Operation

EQUIPMENT: FIRECLASS DUO-CEL
PUBLICATION: OM_DUO-CEL_APP
ISSUE No. & DATE: 2 20/06/18
PAGE 39 of 46
15. Appendix
15.1 EN54 Mandatory Functions
The DUO-CEL panel provides the following
EN54-2 mandatory functions:
 Clause 5.1 Display of functional
conditions.
 Clause 5.2 Display of indications.
 Clause 5.4 Indication of the supply of
power.
 Clause 5.5 Audible indications.
 Clause 5.6 Additional indications.
 Clause 7.1 Reception and processing of
fire signals.
 Clause 7.2 Indication of the fire alarm
condition.
 Clause 7.3 Indication of the zones in
alarm.
 Clause 7.4 Audible indication (of fire
alarm).
 Clause 7.6 Reset from the fire alarm
condition.
 Clause 7.7 Output of the fire alarm
condition.
 Clause 8.1 Reception and processing of
fault signals.
 Clause 8.2 Indication of faults in specified
functions.
 Clause 8.5 System Fault
 Clause 8.6 Audible Indication (of faults).
 Clause 8.7 Reset of fault indications.
 Clause 8.8 Fault output.
 Clause 9 Disabled condition
15.2 EN54 Optional Functions With
Requirements
The DUO-CEL panel provides the following
EN54-2 optional functions:
 Clause 7.8 Outputs to fire alarm devices.
 Clause 7.9 Outputs to fire alarm routing
equipment.
 Clause 7.12 Dependencies on more than
one alarm signal.
 Clause 7.13 Alarm counter
 Clause 10 Test condition.
15.3 Ancillary Functions Not Required
By EN54
The DUO-CEL panel offers several auxiliary
functions that are not required by EN54-2
(some may affect the mandatory functions).
These are:
 Fire Relay output.
 Detection zone 1 can be configured as
non-latching. (AFFECTS A MANDATORY
FUNCTION).
 Remote control input for class change,
alert, evacuate, silence alarms & reset.
 Auxiliary 24Vdc supply reset to interrupt
power to external equipment that needs to
be reset in tandem with the DUO-CEL
panel (e.g. IR Beam Detectors).
 Disable the panel buzzer. (AFFECTS A
MANDATORY FUNCTION).
 Open collector outputs for disabled,
evacuate active & buzzer active.
 One Man Sounder Test [see 8.6].
 Repeater panels.
15.4 Safe State
The microcontroller in the DUO-CEL panel
continuously monitors the firmware memory,
the volatile memory and the configuration
memory for corruption. If an error is detected,
the software enters the safe state. In addition,
a hardware circuit monitors the microcontroller
for correct operation. This hardware watchdog
circuit will also place the panel in the safe state
if the microcontroller fails to work correctly.
In the safe state, all outputs are deactivated
and only the SUPPLY ON, GENERAL FAULT
& SYSTEM FAULT LEDs are illuminated. The
buzzer will sound continuously.