Specifications

Page 15
EN54 FIREFINDER PLUS INSTALLATION,COMMISSIONING & OPERATION
4.8.3 Monitored Inputs
Four independently monitored inputs (TB8) are provided and can be configured for a variety of uses.
 Manual Call Point – if activated the FACP will go into alarm
 DBA – if activated all Outputs configured as Sounders or EWIS and Relays configured as
EWIS (NZ Only)
 Class Change – if activated all Sounders and Sounder Outputs in Sounder Group 1
 External Fault – if activated the FACP will indicate a Fault condition
 AUX / ANC - if activated, the FACP’s “DISABLED” and ANC OUTPUT STATUS LEDs will
both be turned on. Note that this event is used to indicate an ancillary/auxiliary disablement
or a door-opened condition if a door switch is fitted. It also activates any Relays on the
Brigade board configured as “Isolate” relays and affects the Brigade Board’s “Aux/Anc”
outputs based on their “normally energised” settings.
 Evacuate – if activated the FACP goes into Evacuation.
 Sounder Silence – if activated all activated sounders are silenced.
 Reset – if activated a Master Reset is initiated.
 Fire - if activated, the FACP’s “Fire Output On” LED will flash (EN54-2 Clause 7.9.2). Note
that this is a latched condition and will only be cleared a “Master Reset” command from the
FACP.
The inputs have been designed to operate with a programmable EOL of 3K3Ω, 10KΩ 22KΩ or
Unmonitored (no EOL) the 10K EOL is the default. The normal and active ranges change according
to the end of line selected.
Line resistance (10K EOL)
Sensed Condition
0Ω– 150Ω
Short circuit Fault
500Ω – 4KΩ
Active condition
8KΩ – 15KΩ
Normal
20KΩ to ∞
Open circuit Fault
Door Switch
TB11
EOL
10K
Ohms
DBA / MCP
4K7
Note: Door Switch is Open for
Normal Operation and not Monitored
TB8
TB8 location
N1236
C 1+ 2+ 3+ 4+
TB8 / C
TB8 / 1+, 2+, 3+ or 4+
(depending on config)
TB8 / 1+, 2+, 3+ or 4+
(depending on config)
TB8 / C
Figure 13: Inputs DBA / MCP and Door Switch Wiring