Installation And Wiring - DSC Maxsys PC4020 System Manual

INSTALLATION
AND WIRING
When designing a security system with the PC4020 that
will be larger than 16 zones or have two or more Partitions
it is best to first lay out the system on paper. This will help
determine the total number of zones, additional expansion
and power supply modules and other system elements
that may be needed.
When the location of all points of protection is known the
location of the zone expanders can be made. You will find
that working from a plan, a layout will reveal the most
economical use of system modules; two eight zone
expansion modules instead of one sixteen zone, for
example, can save long wire runs because of the location
of zones.
The plan will also enable you to make the most efficient
layout for the communications bus (Combus). This is the four
conductor cable which can be standard station wire (four 22
AWG wires colour coded red, black, yellow and green) to
which all system modules are connected in parallel. It is not
recommended to run the Combus in shield unless it is being
run through an area of high electrical noise.
The Combus may be up to 1,000 ft. (300 m) from the main
board to the farthest module, with any number of modules
in between. More than one Combus of 1,000 ft. (300 m)
can run from the PC4020.
Note: Do not use shielded cable for Combus wire runs.
Suggested Wiring Procedure
The first step in designing a PC4020 installation is
developing a system layout on paper. Doing this will allow
you to work from a plan and help to avoid making
mistakes and make programming easier.
Creating a System Layout
1 Draw a rough sketch of the building(s) layout in the
installation including the interior walls. Indicate on the
diagram the location of the PC4020 main panel. The
panel should be in a dry, secure location close to a
non switched AC source, a ground connection and a
telephone line connection.
2 Indicate on the diagram the location of all zones as
well as the device required such as smoke detectors,
motion detectors, door contacts etc.
3 Zones may be grouped together into partitions.
Knowing the zone number of each zone will allow the
partition setup done without mistakes. Locate any zone
expansion modules (PC4108 or PC4116) required
close to groups of zones for easier wiring.
Decide on the order to enroll the expansion modules.
The first 16 zones (1 through 16) are on the main
panel. As each module is enrolled it will be assigned in
sequence the next available group of zones. If an 8
zone module (PC4108) was enrolled first, it would be
assigned zones 17 through 24. If then a 16 zone
expansion module (PC4116) is enrolled it would be
assigned zones 25 through 40.
Once the order to enroll the expansion modules has
been determined, number each zone accordingly.
4 Wireless zones (used with the PC4164) can be placed
anywhere within the reception range of the PC4164.
Once the zone that are planned to be used are
indicated on the diagram the location of the PC4164
can be shown as well. For best results the PC4164
should be placed in as central of a location as
possible. Indicate next to the zone, the serial number of
that zone. This will make placement tests easier.
5 Indicate each partition by boxing the area of the partition
on the diagram. From this diagram it can be quickly
determined which zones belong to that partition.
6 Determine the number of keypads (LCD4500) required
for each partition and their location on the system. The
maximum number of keypads on a system is 16. Each
keypad on the system assigned to a partition can only
be used to operate that partition. (EXCEPTION - A
System Master or a multi-partition access code can
access any partition that the code is assigned to from
any keypad). Indicate on the diagram the location and
the partition each keypad will be assigned to.
After the number of zones, keypads, and their locations,
expansion modules and separately controlled systems
(partitions) have been determined, decide other
modules required to complete the installation.
7 The ESCORT4580 (Voice Prompting Module) is a
module which is connected to the Combus and the
Telco lines of the control panel. This module uses the in
house telephone(s) to give the user access to any
partition the users code may belong to. The module
may be enrolled as a Partition or Global unit.
Note: The ESCORT4580 is located in the Main
Cabinet with the control panel.
8 Siren outputs can be programmed to activate if one or
more partitions go into alarm. The main panel provides
one output (The Main Bell Output).
Additional outputs can be obtained from the PC4204
power supply/relay output module(s). Each PC4204
module has 4 form "C" relays, the last 3 of which can be
used as any one of the 28 output options (See PGM
Output List). Indicate on the diagram the location of each
of the sirens, and the location of the PC4204 module(s).
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