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2.3.4.3 AUX DC Supply Output
Two Auxiliary Power Outputs are provided.
18.0 – 28.0 V DC, 0.5A
1
SUPERVISED. POWER LIMITED.
AUX #1 : 4-Wire Smoke Detector Power or other
similar application. Power turns off for
10-15 seconds on reset.
AUX #2 : 24V DC (nominal) power output for
external equipment (remote status
indicators)
2
.
Use appropriately sized cable for the current load
to ensure device compatibility.
F
ULT
Relay
R S485
UX
Sup ply
Z
O
N
E
-
1
-
Z
O
N
E
-
2
-
ZO N E
- 3 -
UX-2
UX-1
2.3.4.4 Detection Zone Inputs
Section 12.5.2
In accordance with EN54-2, a maximum of 32 detectors per zone only.
Three conventional detection zone inputs are
provided. These are nominally 20V DC circuits
and are current limited.
The circuits are monitored for open and short
circuits. For normal monitoring, a 6800 End-of-
Line resistor is required.
The circuit is designed to be compliant with
conventional detectors and call points with an
equivalent series resistance of 470/270
respectively.
If using devices that apply a short across the zone
circuit, refer to Section 3.3.1 for how to configure
this use.
F
ULT
Relay
R S485
UX
Sup ply
Z
O
N
E
-
1
-
Z
O
N
E
-
2
-
ZO N E
- 3 -
2.3.4.4.1 Standard Arrangement
Connect the detectors and manual call points (if
required) in series with no spurs.
Connect the en-of-line resistor across the
terminals of the last device.
Observe polarity of connections!
6800Ω
Zone-1 Zone-2 Zone-3
Detector Detector Call Point
2.3.4.4.2 Diode Base Arrangement
If the installation requires conformance to
BS5839-1: 2002 Code of Practice regarding the
supervision of removal of detectors and / or
operation of call points when detectors are
removed, then install the detectors using diode
bases.
An Active-End-of-Line device is required instead
of the 6800 resistor.
AEL
Zone-1 Zone-2 Zone-3
Detector Detector Call Point
1
TOTAL OUTPUT LOAD must not exceed panel supply rating – maximum 2A.
2
AUX-2 also provides power for the Mxp-008 8-Way Relay card. This current must be subtracted from the total available
AUX-2 power to give the available output power.
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