24A [GND]
Auxiliary power supply for devices that operate at 24
V, 1A max. always are guaranteed by the following
batteries:
•
Positive (27.6 V) on terminal [24A];
•
Negative on terminal [GND].
RS485
24V|B|A|GND|SH
These are the terminals for the FC500 repeater,
(maximum 8) and the FC500MFI module (maximum
4, 1A max). Types of terminals include:
•
Serial bus terminals [A] and [B];
•
27.6 V power voltage terminals [GND] and
[24V].
Note:
The maximum cable run allowed is 1000
m.
Battery
+BAT-
Terminals to connect the batteries inside the FC503,
FC506 control panel.
The system wiring
Internal and external wiring:
Note:
If you use conductors with a total cross-
sectional area of 0.5 mm
2
or greater, use
the procedure in the IEC 60332-1-2 and IEC
60332-1-3 standards.
If you use conductors with a total cross-sectional
area of less than 0.5mm
2
, use the IEC60332-2-2
standard.
CAUTION:
Bunch high voltage leads (230V)
separately from low voltage leads
(24V). Bunch leads in a way that
avoids contact with other wiring
and components.
Note:
Use only shielded cable for all
connections, with one end connected to the SH
terminal of the control panel and the other one
left free.
Connecting addressable devices
The control panel FC503 has one main loop or
three sub loops for addressable analogue devices.
The control panel FC506 has two main loops or
six sub loops for addressable analogue devices.
The maximum number of connecting addressable
devices for one main loop is 250 addressable
analogue fire detectors and analogue devices such
as input modules and output modules.
Every detector and module connected to the loops
must have a unique address. You can use two or
four wires for the loop connections.
Specify the loop connection type during the
programming phase. The following figures illustrate
the loop connections:
•
Figure 9 illustrates the 2-wire connection to
Loop 1.
•
Figure 10 illustrates the 4-wire connection to
Loop 2.
Whatever the type of connection performed, ensure
that any short or open circuit in the wiring does
not lead to the loss of more than 32 detectors. It is
necessary to fit an isolator every 32 detectors.
If using a 2-wire connection type, you can connect
addressable analogue fire detectors and analogue
devices such as input and output modules on the
left and right sides. There are two spur circuits per
sub loop.
FC503 and FC506 Addressable Fire Control Panels
26
Johnson Controls - CONFIDENTIAL
