Installation manual

2
Section 2: Installation and Wiring
2.1 Plan Your Installation
When designing a security system with access control it is
best to first lay out the system on paper. This will help
determine the total number of zones, additional expanders,
access control points and other system components that
will be required to complete the installation.
When the locations of all points of access are known,
appropriate points may be chosen for access control.
When working from the layout, be sure to locate the
PC4820 module so that the wire runs from each door will
be as short as possible.
When deciding the placement of the access points and
module, remember to check the capacitance limit for the
wire you are using for the Combus. Follow the steps out-
lined in your PC4010/4020 v3.0 Installation Manual (Sec-
tion 2.4 “Capacitance Limits”).
NOTE: Do not run the Combus to the PC4820 in shielded
cable.
2.2 Installation Steps
Once the location of the PC4820 and each access point is
determined, follow the installation steps outlined below.
1 Installation of PC4820 and accessories:
The PC4820 controller cabinet has been designed for sur-
face mounting. The cabinet is large enough to accommo-
date the battery backup supply and the necessary wiring
connections for most applications. The cabinet should be
mounted indoors, in a dry, secure location providing nor-
mal temperature, humidity levels and access to an earth
ground connection. The location should be easily accessi-
ble for servicing the equipment, and it is recommended
that each PC4820 module be near the doors it controls. If
the PC4820 is within the access-controlled area, keys for
the controlled doors must be made available so that the
PC4820 can be accessed for servicing.
Connect the various devices for each access door accord-
ing to the diagram below:
A. Access card readers should be located 107cm (42")
from the floor.
B. Connect door strikes using standard 18-gauge cable.
Recommended door strikes are electric continuous
duty devices which, when power is cut, will remain in
a locked or secured state. When using magnetic locks,
follow local regulations on the use of these devices.
CAUTION: Local regulations may prohibit “Lock on
Power Failure” if the door is used as a fire escape
route.
C. Door contact must be hardwired directly to the
PC4820. Wireless or addressable contacts may not be
used.
D. Install a T-Rex exit detector and door alarm (optional)
inside of the protected area. (See T-Rex Installation
Instructions for details on wiring and proper mounting
locations.)
2 Tamper protection
A tamper switch may be installed on the cabinet to protect
it from unauthorized entry. The normally closed tamper
switch is connected to the TAMP and GND (on right side
of the PC4820). If the tamper switch is not used, the
TAMP terminal must be terminated to any GND terminal
with a wire.
*UL Listed systems require tamper protection.
3 Connect all inputs, outputs, door locking devices and
card readers
Follow the instructions outlined in the sections below for
installing each type of device.
4 Power requirements
For UL/ULC installations, use a UL/CSA Listed Class 2
transformer mounted outside the cabinet. Connect the red
battery lead to the positive terminal and the black battery
lead to the negative terminal. The transformer must be a
Class 2 Fail-safe as per EN60742, permananently con-
nected. The transformer must meet the LVD and/or be cer-
tified for the intended market.
Connect the red battery lead to the positive terminal and
the black battery lead to the negative terminal.
NOTE: Do not apply power until all wiring is complete.
Both the AC and battery connections must be made in
order for the PC4820 to function properly. Connect the
battery before connecting the AC.
2.3 Inputs – POST, ARM and REX
The door inputs are capable of following any type of
supervision. Choose the end of line configuration (nor-
mally closed loops, single end of line or double end of
line) which you have selected for the rest of the security
system.
The POST, ARM and REX inputs are for Auto-arm post-
ponement, Arming buttons and Request to Exit devices,
respectively. These inputs will only be capable of nor-
mally closed loops or single end of line resistors. When
using double end of line supervision, these inputs must
only be wired for single end of line configuration. Please
see section 3.5 “Zone Assignment for Access Doors” for
information on door input zone programming.
POST Inputs
When enabled, this PC4820 input allows postponement of
Auto-arm of the PC4010/4020 for the partitions selected
in the Arm/Disarm mask. To postpone an Auto-arm, the
user must present their access card (during the Auto-arm
pre-alert) and activate the device connected to the POST
input. Typically the POST input will be a push button
device mounted next to the access card reader (107cm /
42" from the floor) which is assigned to the partition(s).
B
D
C
To PC4820 Access Con-
trol Module (see Access
Control Module
Wiring Diagram
for more details).
A