TNA TX7232 User manual

TX7232
Base Mount Short Circuit Isolator
Installation and Operation Manual
TANDA UK Technology Copyright ©2017, All right reserved.

TX7232 Base Mount Short Circuit Isolator
Installation & Operation Manual
4050100390 -Rev1.0-0717
TANDA UK
Specifications are subject to change without prior notice
2
Product Safety
To prevent severe injury and loss of life or property, read the instruction carefully before installing the
Isolator to ensure proper and safe operation of the system.
European Union directive
2012/19/EU (WEEE directive): Products marked with this symbol cannot be disposed
of as unsorted municipal waste in the European Union. For proper recycling, return
this product to your local supplier upon the purchase of equivalent new
equipment, or dispose of it at designated collection points.
For more information please visit the website at www.recyclethis.info

TX7232 Base Mount Short Circuit Isolator
Installation & Operation Manual
4050100390 -Rev1.0-0717
TANDA UK
Specifications are subject to change without prior notice
3
Table of Content
1 Introduction .................................................................................................................................................. 4
1.1 Overview................................................................................................................................................ 4
1.2 Feature and Benefits........................................................................................................................... 4
1.3 Technical Specification ..................................................................................................................... 4
2 Installation ..................................................................................................................................................... 5
2.1 Installation Preparation ...................................................................................................................... 5
2.2 Installation and Wiring ........................................................................................................................ 5
3 General Maintenance .............................................................................................................................. 6
4 Troubleshooting Guide .............................................................................................................................. 6
Appendix 1....................................................................................................................................................... 6
Limitation of Base Mount Short Circuit Isolator................................................................................... 6

TX7232 Base Mount Short Circuit Isolator
Installation & Operation Manual
4050100390 -Rev1.0-0717
TANDA UK
Specifications are subject to change without prior notice
4
1 Introduction
1.1 Overview
The TX7232 manufactured base on the requirement of EN 54 part 17, European Standard. In the
event of short circuit on the detection loop the TX7232 Isolators either side of the loop will detect the
problem and open circuit and isolates the faulty part of the loop, enabling other devices on the
unaffected part of the loop to operate normally. The isolator will continue to monitor for the fault to
be repaired, once the fault is cleared the isolator will automatically reinstate the effected part of the
loop.
The unit is aesthetically pleasing with unobtrusive design that will complement modern building
designs and its plug-in type assembles make installation and maintenance more convenient to the
installer. The TX7232 Isolator is compatible to the TX7004 Analogue Intelligent Fire Alarm Control Panel,
produced by single manufacture T&A, to avoid addressable communication compatibility problem.
1.2 Feature and Benefits
EN54-17 Compliance
In the event of a short circuit isolates faulty parts of the loop.
Automatically resetting once the fault has cleared
Can monitor up to 70 devices
LED status indicator
Loop powered device
Aesthetically pleasing design
A detector can be mounted directly above the isolator
1.3 Technical Specification
Listed LPCB Pending
Compliance EN54-17
Input Voltage 24VDC [16V to 28V]
Current Consumption Standby : ≤0.15mA, Alarm: ≤2mA
Protocol T&A
Number of monitored Max 70 Devices
Output Impedance 480 mΩ
Indicator Status Normal: Single blink/Active: Steady-on
Material / Colour ABS / White Glossy finishing
Dimension / LWH Diameter 100.7mm, Thickness 34mm
Weight 108g (with Cover), 91g (without Cover)
Humidity 0 to 95% Relative Humidity, Non condensing

TX7232 Base Mount Short Circuit Isolator
Installation & Operation Manual
4050100390 -Rev1.0-0717
TANDA UK
Specifications are subject to change without prior notice
5
2 Installation
2.1 Installation Preparation
This interface isolator must be installed, commissioned and maintained by a qualified or factory
trained service personnel. The installation must be installed in compliance with all local codes having
a jurisdiction in your area or BS 5839 Part 1 and EN54.
T&A products has available range of interfaces, each interface isolator is designed for specific
application, it is essential to consider the requirement of both sides of the interface to avoid
malfunction and typical fault scenario. The main caution is to ensure that the voltage rating of the
equipment and interface isolator are compatible.
2.2 Installation and Wiring
1. The appearance of the Base Mount Short Circuit Isolator is shown in Figure 1. Figure 1-a, 1-b
and 1-c are front view with a cover, front view without a cover and side view without a cover,
Respectively.
2. As shown in Figure 1-b, “ZI+”and “ZI-”are the positive and negative terminals of the bus input.
ZO+ and ZO-are the positive and negative terminals of the bus output. “L+”and “L-”are used
to connect the remote control lights.
3. Figure 2 is the installation of the isolator. The isolator can be Installed on the wall with screws
through the mounting holes. The wires are connected to the terminals of the isolator through
the cable entry.
Front View(with Cover) Front View(without Cover) Side View(without Cover)
Figure 1 External view of Base Mount Short Circuit Isolator
Figure 2 Wiring Diagram

TX7232 Base Mount Short Circuit Isolator
Installation & Operation Manual
4050100390 -Rev1.0-0717
TANDA UK
Specifications are subject to change without prior notice
6
3 General Maintenance
1. Inform the suitable personnel before conducting the maintenance.
Note: Since Isolator cannot disable from the control panel to prevent false alarm, it is
recommended to temporarily close the loop once the isolator is removed.
2. Do not attempt to repair the circuitry of the interface isolator, it may affect the operation to
respond to a fire condition and will void the manufacturer’s warranty.
3. Use a damp cloth to clean the surface.
4. Notify again proper personnel after conducting the maintenance and make sure to enable
the interface isolator and confirm if up and running.
5. Perform the maintenance on semi-annually or depending on the site conditions.
4 Troubleshooting Guide
What you notice
What it means
What to do
Panel display loop fault
Wrong wiring or the damage the
electronic circuit
Replace the device
Appendix 1
Limitation of Base Mount Short Circuit Isolator
The isolator cannot last forever. In order to keep it working in good condition, please maintain the
equipment continuously according to recommendations from manufacturers and relative nation
codes and laws. Take specific maintenance measures on the basis of different environments.
This isolator contains electronic parts. Even though it is made to last for a long period of time, any of
these parts could fail at any time. Therefore, test your isolator at least every half-year according to
national codes or laws. Any interface isolator, fire alarm devices or any other components of the
system must be repaired and/or replaced immediately as they fail.