Digital input modules TX
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• Two fully compatible versions: - TXM1.8D: 8 inputs, each with a three-color LED (green, yellow or red) - TXM1.16D: As TXM1.8X, but 16 inputs, each with a green LED • 8 or 16 digital inputs; individually configurable for status signals, status pulses (with a memory function) or counter pulses (up to 10 Hz) • Compact DIN format, small footprint • Separate terminal base and plug-in I/O module for convenient handling - Self-establishing bus connection for maximum ease of installation - Terminal isolation function for fast commissioning - I/O module replaceable in seconds, without rewiring and without affecting the full functioning of the remaining I/O modules • All terminals are directly on the I/O modules, allowing direct connection of field devices without additional terminal strips. • Simple strategy for operation and display - I/O status LED for each I/O point; mode of operation (N/C or N/O) depends on I/O function - LEDs for fast diagnostics • Double-sided labels for identification of all I/O points Building Technologies

The modules support the following I/O functions: For a detailed description of these functions, please refer to document CM1105761, "TX-I/O™ Functions and operation". Support of signal types and functions in different building automation and control systems: see TX-I/O Engineering and installation manual, CM110562 ASN Digital input module TXM1.8D Digital input module TXM1.16D Delivery The terminal base and the plug-in I/O module are interconnected and delivered in the Accessories The available accessories include address keys, label sheets, and spare transparent label holders. Refer to data...

Indicators and operator controls Connection terminals (No. 1 screwdriver for slotted or recessed-head * screws) with test pickup (for 1.8...2 mm pins) and terminal number Signal designation Address key and module status LED I/O point numbers (I/O points 9 ... 16: TXM1.16D only) I/O status LEDs (TXM1.8D: Configurable - green/yellow/red TXM1.16D: Green) * Combined slotted / recessed-head screws from mid-2012 I/O status LEDs • The I/O status LEDs indicate the status of the inputs and outputs (peripheral devices) • The LEDs on the TXM1.16D are green • In the case of the TXM1.8D the LEDs are...

The plug-in I/O module has a removable transparent cover (the label holder) for insertion of a label. The devices are considered electronics devices for disposal in terms of European Directive and may not be disposed of as domestic garbage. • Dispose of the devices through channels provided for this purpose. • Comply with all local and currently applicable laws and regulations. Please refer to the following documents Permitted orientation The TX-I/O™ devices can be installed in any orientation: It is important to provide adequate ventilation so that the admissible ambient temperature (max....

Technical data Supply (bus connector on side) Operating voltage Max. power consumption TXM1.8D TXM1.16D (for the sizing of power supplies, see CM110562) DC 21.5 ... 26 V (SELV / PELV) or DC 24 V class 2 (US) 1.1 W 1.4 W Protection All terminals of the modules Against shortcut and incorrect wiring with AC / DC 24 V No protection!_ Field devices Insulation resistance The of the connected field devices against mains voltage must comply with the requirements for safety extra-low voltage (SELV) or protection by extra-low voltage (PELV) as per HD 384. Measuring cables Cable material Solid or...

Mode of operation of automatic electrical controls Type 1 Contamination level 2 Mechanical design_Protection class III Housing protection standard Ambient conditions Protection standard to EN 65029 Front-plate components in DIN cut-out Terminal base_ Operation Climatic conditions Temperature Humidity Mechanical conditions Transport / storage Climatic conditions Temperature Humidity Mechanical conditions Standards, directives and approvals Electromagnetic compatibility (Applications) EU conformity (CE) UL certification (US) CSA certification Environmental compatibility Product environmental...

U Digital input module K1 Status contact (N/O) K2 Status contact (N/C) K3 Pulse contact (N/O) K4 Pulse contact (N/C) S5 Electronic switch Terminal layout I/O point 1) Terminals 1, 3, 5 etc. are system neutral terminals - They are interconnected, not in the terminal base but in the plug-in I/O module. This means that when the I/O module is removed, there is no connection. - The system neutral of a digital input can be connected to any system neutral terminal For wiring details refer to the TX-I/O™ Engineering and installation manual, CM110562. Siemens Building Technologies TXM1.8D, TXM1.16D...

Published by: Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 41-724 24 24 © Siemens Switzerland Ltd 2007 www.siemens.com/buildingtechnologies Delivery and technical specifications subject to change 8/8 Siemens Building Technologies TXM1.8D, TXM1.16D - Digital input modules