ZX Fire Alarm Control Panels
Page 14
Document No. 996-174-000-1, Revision: 01
Installation Manual
EN54
!
EN54-2 12.5.2
Maximum of 32
sensors / MCP’s
between Isolators.
For best results and system integrity:
The detection loop circuit should be wired as a loop with short circuit
isolators. This allows the system to still function in the event that a
section of the cable becomes short-circuited. It is recommended that
short-circuit isolators be fitted to the detection loop to prevent an
external short circuit from removing more than 32 addressable points
from the system.
The detection loop connections are made on the terminal blocks at the top of the base card.
3.4.3.1 Loop
Wiring
Installation
Data / Power (+) OUT
Data / Power (-) OUT
(+) RETURN
(-) RETURN
Form the loop by taking wires from
the positive and negative terminals,
at one side of the connector on the
base card – see opposite.
Proceed with installing wiring,
around the loop, connecting all
devices – see below.
Return the wiring to the positive and
negative terminals at the other side
of the connector on the base card.
Ensure that all devices connected to
the loop are correctly oriented for
positive and negative connections.
Refer to the detector manufacturers’
data sheet supplied with the
signalling device.
Figure 9 – SLC Connections
FACP Connections
Data /
Data / P
Data / P
Data / P
Power (+) OUT
ower (-) OUT
ower (+) RETURN
ower (-) RETURN
Figure 10 – Loop Wiring without Isolators
Summary of Contents for FW9003 Range
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