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A50E-2 Line Relay Unit Installation Sheet
WARNING: Electrocution hazard. Dangerous voltages may be
present at terminals even when the power is shut off. Take
proper precautions to avoid injury or death.
Note: The A50E-2 Line Relay Unit is shipped from the factory
as an assembled unit; it contains no user-serviceable parts and
should not be disassembled
To install the device:
1. Verify that all field wiring is free of opens, shorts, and
ground faults.
2. Make all wiring connections as shown in Figure 1.
Notes:
• If a 2 in. (51 mm) 1-gang box is used, conduit can enter
the electrical box through only one knockout hole.
• If a 2-1/2 in. (64 mm) 1-gang box is used, conduit can
enter the electrical box through one or both
knockout holes.
Description Mounting
The A50E-2 can be mounted using any of three methods:
The A50E-2 Line Relay Unit is an addressable device used to
provide one Form C change over dry relay contact to control • A DIN rail method for mounting multiple/single units
external appliances (door closers, fans, dampers, etc.) or • Adaptor plates for accessory box mounting
equipment shutdown. The system firmware ensures that the • Single box mounting
relay is in the proper ON/OFF state. Upon command from the
control panel, the relay energizes. TB2-6 and TB2-7 provide a The unit can be mounted in a European 100mm square box.
normally-closed relay connection; TB2-7 and TB2-8 provide a The terminal blocks will accept 14, 16, or 18 AWG wire (0.75,
normally-open relay connection. One device address is 1.0, 1.5, mm²). Sizes 16 and 18 AWG are preferred.
required.
Up to 127 devices can be assigned to the loop. All devices
incorporate a binary DIP switch enabling them to be given a
unique address. A red LED indicator illuminates when the unit
has activated.
Installation
Notes
• This module complies with the requirements of EN 54-18.
If the module is used in conditions or circumstances that
do not comply with those tested for and allowed in
EN 54-18, operation may be impaired, and the supplier will
not be liable for any injury suffered or damage caused as
a result. You must contact our technical support
department for advice if the device is to be used in
conditions that differ from those prescribed in EN 54-18.
• This module will not operate without electrical power. As
fires frequently cause power interruption, we suggest you
discuss further safeguards with your local fire protection
specialist.
© 2013 UTC Fire & Security. All rights reserved. 1/2 P/N 501-1761ZE-1-05 (EN) • REV 05 • ISS 07JUN13
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Wiring Relay contact rating
DC
Figure 1: Wiring the A50E-2 Line Relay Unit Voltage 30 VDC max.
Current 1A
AC
Voltage 40 VDC
Current 0.30 A
Power factor resistive load 1 PF
Power factor inductive load 0.4 PF
(L/R = 7 mS)
Regulatory information
Manufacturer UTC Fire & Security South Africa (Pty) Ltd.
555 Voortrekker Road, Maitland, Cape Town
7405, PO Box 181 Maitland, South Africa
EU authorized manufacturing representative:
UTC Fire & Security B.V.
Kelvinstraat 7, 6003 DH Weert, Netherlands
Year of The year of manufacture, in the format YYDDD,
manufacture is located on the product barcode label, as shown
below.
Setting the address Product type Type A for indoor use
The A50E-2 Line Relay Unit contains a seven-segment DIP Certification
switch. The switch is used to set the device address in binary
code. The switch may be set to represent any address from 1 CPD certificates 0832-CPD-0965
to 127. EN 54 EN 54-18:2005
In the ON position, a switch represents its code value. In the 2002/96/EC (WEEE directive): Products marked
OFF position it represents a zero. See the table below. with this symbol cannot be disposed of as
unsorted municipal waste in the European Union.
Switch 1 2 3 4 5 6 7 For proper recycling, return this product to your
number local supplier upon the purchase of equivalent
new equipment, or dispose of it at designated
Code value 1 2 4 8 16 32 64 collection points. For more information see:
www.recyclethis.info.
To arrive at the address number of a device, add the code
values of all switches that are in the ON position, for example
switches 2, 3, and 6 set to ON represent address 38 (2 + 4
+ 32).
Specifications
Application Indoor use
Operating environment
Temperature −10 (±3) to +55 (±2)°C
Relative humidity 20 to 95% noncondensing
Indication LED (red) flashing on activation
Operating voltage 20 volt pulsed analog loop
(19.5 to 20.5 VDC).
Max line drop 4 VDC
Standby current 600 µA
Alarm current 700 µA
2/2 P/N 501-1761ZE-1-05 (EN) • REV 05 • ISS 07JUN13
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