Tanda TX7221 - 1 Introduction; 1.1 Overview; 1.2 Feature and Benefits; 1.3 Technical Specification

TX7221 Multichannel I/O Module
Installation & Operation Manual
4050100535-Rev1.1-1018
TANDA UK
Specifications are subject to change without prior notice
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1 Introduction
1.1 Overview
TX7221 multichannel input and output module (hereinafter referred to as module) is a dedicated bus
module device for fire protection, which can be connected with intelligent fire alarm controller.
This module is easy to install, and has active output port, passive output port and input port. Input
port has a strong analytical ability to judge the input port for short circuit, open circuit and fire
detection, and through the lights indicate the status.
1.2 Feature and Benefits
 A non polar bus of two wire
 four input detection ports, four contact output ports, one active output port.
 The input ports have the function of line fault detection
 Software and hardware filter technology is used to improve the anti-interference ability of the
module
1.3 Technical Specification
 Bus protocol T7 protocol
 Current Consumption Bus monitoring current: ≤1.5mA,
Equipment monitoring current: ≤25mA
 Power supply voltage 24VDC (18V~28V)
 Active output voltage 24VDC / 500mA
 Contact output voltage 24VDC / 2A (per circuit)
 Connection mode Connected with the controller using non-polar bus of
two wire; connected to the DC24V power supply
using a non-polar two-wire connection
 Encoding method electronic coding
 Dimension / LW 150 mm x 100 mm
 Weight 350g
 Operating Temperature -10°C to +50°C
 Humidity 0 to 95% Relative Humidity, Non condensing
2 Installation
2.1 Installation Preparation
This interface module must be installed, commissioned and maintained by a qualified or factory
trained service personnel.
Tanda products has available range of interfaces, each interface module 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 module are compatible.
2.2 installation and wiring
1. This module does not has shell and is fixed in the installation position through a screw hole.
Installation screw： M3×8 Pan head screws with cross spring washer and plain washer assemblies, the
installation method is shown in figure 1 .