2: Primary And Secondary Phone Lines; 3: Communicator Fail Relay Driver; 4: Earth Ground; Specifications - Honeywell NOTIFIER UDACT Instruction Manual

Universal digital alarm communicator/transmitter

Table of Contents

The EIA-485 circuit cannot be T-Tapped and must be wired in a continuous fashion from the

control panel to the UDACT and, if installed, annunciators. The wire must be 12 to 18 AWG

twisted pair, shielded cable with a characteristic impedance of 120 Ohms, +/– 20%. Limit the total

wire resistance to 100 Ohms on the EIA-485 circuit. Do not run cable adjacent to, or in the same

conduit as 120 volts AC service, noisy electrical circuits that are powering mechanical bells or

horns, audio circuits above 25 volts RMS, motor control circuits, or SCR power circuits.

1.9.2 Primary and Secondary Phone Lines

Modular jacks are used to interface the primary and secondary phone lines to the public telephone

network.

1.9.3 Communicator Fail Relay Driver

Relay driver output for Central Station communication failure is available.

1.9.4 Earth Ground

An earth ground connection to the UDACT is required for transient protection. One option allows

connection via Earth Gnd terminal on TB3 using solid 12 AWG (3.25mm

lightning protection (this connection is not required when the UDACT is mounted in a grounded

metal enclosure via the upper right mounting hole).

A second option allows connection via the upper right corner mounting hole using a metal standoff

and screws, attach to grounded metal cabinet.

1.10 Specifications

1.10.1 DC Power

24VDC (nominal) filtered, non-resettable and power-limited. DC Power at terminal block TB1

(+, –) is 40 mA in standby, 75 mA maximum while communicating and 100 mA with the open

collector output engaged and communicating.

1.10.2 Data Communications

EIA-485 Serial Interface, terminal block TB1 (RS+, RS–, Shield, RS+, RS–). Power-limited

source must be used. The terminals marked "TERM RS+, RS–" are for future use.

1.10.3 Auxiliary Output

TB3 Communicator Failure. An Open Collector type output, normally high, active low which sinks

up to 40 mA. TB3 (+24V), power-limited. Use UL listed relay P/N: MR-101/C or MR-201/C with

this output.

NOTE: The FCC ID label is located on the inside of the door of the host panel

The FCC ID label is located on the inside cover of the remote backbox.

UDACT Instruction Manual — P/N 50050:M 12/18/2009

Overview

) wire to provide

Table of Contents