Part 6 Installing The Auxiliary Relay Module - Chamberlain SENTEX Infinity Series Installation Instructions Manual

PART 6 INSTALLING THE AUXILIARY RELAY MODULE

You can purchase an Auxiliary Relay Module (ARM) with a Multi-Link system. The ARM unit gives you
timed activation for up to sixteen relays. You can use the ARM unit for such things as:
•
Elevator access control
•
Turning on and off heating and air conditioning systems
•
Controlling a gate operator
Installation of the ARM unit is the same as the installation of the Infinity "B" unit, with the following
exceptions:
o The ARM unit cannot be the first unit in a Multi-Link chain.
o You may program the relays on the ARM unit to be either energized or de-energized at power up.
If you program the relay to be energized when power is applied and power is lost, the relay will
switch states.
Example 1: You connect an elevator to relay 1 and program it to be energized at power up. If
power to the ARM unit is lost, the elevators will continue to operate.
Example 2: You connect a gate operator to relay 2 and program it to be de-energized at power
up. If power to the ARM unit is lost, the gate will remain closed.
o
Keypads and card readers are not automatically connected to specific relays. You must program
each keypad and card reader to activate a specific relay. For instructions, please refer to
Programming Infinity Systems with Multi-Link Firmware, Document Number 6001014.
1. When attaching devices to the relays, refer to the device specifications for size and length of cable.
♦ If the relay is programmed to be energized at power up, (e.g., elevator control panel or
HVAC):
A. Attach one wire to the NC terminal of the relay.
B. Attach the other wire to the COMMON terminal of the same relay.
♦ If the relay is programmed to be de-energized at power up, (e.g., door or gate operator):
A. Attach one wire to the NO terminal of the relay.
B. Attach the other wire to the COMMON terminal on the same relay.
2. If the ARM unit is the last unit in the Multi-Link chain:
A. Disconnect TB3 RS-232 Port 2 on the main processor board from TB4 RS-232 Port 2 on the
short-haul modem board.
B. Place a jumpter between the CTS and RTS terminal on TB3 RS-232 Port 2 on the main
processor board.
3. Once the ARM unit is installed and tested, you will need to program the state of the relays at power
up. For instructions, please refer to Programming Infinity Systems with Multi-Link Firmware,
Document Number 6001014.
Rev C Doc 6001565 Page 23 of 31