Installation Instructions
for the
DS7436 Multiplex Expansion Module
1.0 General Information
The DS7436 is a two-loop Multiplex Expansion Module for use
with the DS7400(Xi) Series Control/Communicator. It connects
directly to the DS7400(Xi) and provides a two-wire multiplex bus
for the connection of up to 120 remote points. Each bus is
isolated to so that failure in one bus will not cause failure in the
other.
•Current Draw: 130 mA-H Standby or Alarm.
•Outputs: DC Bus A = 200 mA
Mux Bus A = 75 mA
DC Bus B = 200 mA
Mux Bus B = 75 mA
2.0 Installation
Failure to follow the mounting instructions in
this manual may result in damage to the
DS7400(Xi) Control Panel.
The DS7436 and DS7400(Xi) contain static-
sensitive components and must be handled
with care. Follow anti-static procedures when
handling the modules.
•Install the DS7436 board prior to installing the DS7400(Xi)
board in the control enclosure. If the DS7400(Xi) board is
already installed in the control enclosure, remove the
DS7400(Xi) board at this time.
•Place the DS7400(Xi) board on a flat surface with the
component side of the board facing up.
•Install the four plastic standoffs in the holes provided in the
DS7400(Xi) board. Avoid bending or flexing the DS7400(Xi)
board when inserting the standoffs. Be sure the standoff tabs
are aligned so that they do not touch any components on the
module. Be sure that the stand-offs are firmly pressed into
the board so that the “ears” can expand out. See drawings.
•Install the DS7436 board onto the standoffs, noting that the
connector pins from the DS7400(Xi) are properly aligned to
install into the connector on the DS7436. Avoid bending or
flexing the boards while pressing them onto the standoffs.
•The DS7400(Xi) control board may be installed in the control
panel enclosure at this time.
3.0 Wiring
Connect the multiplex loop to the DS7436 as shown. Up to 2000
feet (610 m) of #22 AWG (0.8 mm) or 5000 feet (1525 m) of #18
AWG (1.0 mm) wire may be used. Do NOT use shielded cable.
The Bus Power output is for connection of separately-powered
multiplex devices such as the DS7432 8-Input Remote Module. If
using separate powered detectors, they should be powered from
the auxiliary power terminals of the DS7400(Xi). The DS7432
may also be powered from the auxiliary terminals.
NOTE:Loops A and B may be used for fire and intrusion
zones. Loop A is recommended for burglary. Loop B is
recommended for fire. Only Loop A may be used to
program the multiplex addresses. Disconnect Loop B
units prior to programming units on Loop A.
4.0 Program Jumper
The DS7436 is shipped with the program
jumper in the Disable position. To enable
programming, move the jumper so that it
shorts the middle and bottom pins.
After programming the multiplex points, the
jumper must be moved back to the Disable
position.
NOTE: The DS7436 MUST have a jumper installed at all times.
CAUTION
PROGRAM
[] DISABLE
[] ENABLE
DS7436
++–
–BUSAPWRA++–
–BUSBPWRB
PROGRAM
[] DISABLE
[] ENABLE
Besurethatthe Stand-off ispressed firmly
through the Printed CircuitBoard,sothat
the Stand-off earscan expand outward.
Stand-off “Ears”
Stand-off
Printed Circuit
Board(PCB)
+–+–
PowerBus
(supervised)
A/CPowerIndication LED
Expansion PortStand-Offs(4)
DS7400(Xi)
O
P
T
I
O
N
R
B
G
Y
1
2
3
4
5
6
7
8
A
C
–
A
–
+
9 10 1 12 13 14 15 16
RBGYGB S R
17 18 19 20 21 22 23 24 25 26 27 28 29 30
PO1PO21– LP+2– 3– 5– 6– 7– 8–4–LP+LP+LP+
Install DS7436 Here
