SIEMENS TXM1.8U I/O Module

Description

SIEMENS TXM1.8U I/O Module

Product Dimensions：

The Siemens TXM1.8U is a high-performance Universal Input/Output module belonging to the TX-I/O™ product range. It is designed to interface seamlessly with Siemens Desigo building automation systems, providing flexible points for monitoring and controlling HVAC equipment.

1. Product Description

The TXM1.8U is a modular expansion unit that provides 8 Universal I/O points. Each point can be individually configured via software to act as either a digital input, analog input, or analog output. Its compact design allows for DIN-rail mounting, and it communicates with the PXC series modular controllers via the TX-I/O bus.

2. Technical Specifications (Product Parameters)

3. Key Advantages (Product Benefits)

• Extreme Flexibility: Because every pin is “Universal,” you don’t need separate modules for sensors and actuators. This simplifies stock management and panel design.

• Hot-Swappable: The module consists of a terminal base and a plug-in electronic unit. You can replace the electronics without disconnecting the field wiring.

• Simple Addressing: Addressing is performed automatically or via a simple “Address Key,” reducing commissioning time.

• Compact Footprint: High point density saves space in the control cabinet.

• Status Indication: Includes an I/O status LED for each point, allowing for quick visual diagnostics during maintenance.

4. Product Application

The TXM1.8U is typically used in commercial building automation for:

• HVAC Control: Measuring temperature (Ni1000/Pt1000), pressure, and humidity.

• Actuator Control: Driving 0-10V dampers or valve actuators.

• Monitoring: Checking status contacts for fans, pumps, or thermal overloads.

• Pulse Counting: Reading flow meters or energy meters (low frequency).

5. Important Considerations (Precautions)

• Bus Power Limits: Ensure the power supply module (e.g., TXS1.12F10) on the TX-I/O bus has enough capacity to power multiple TXM1.8U modules.

• Wiring Safety: Never apply AC 230V to the universal inputs; they are designed for low-voltage signals only.

• Terminal Base: Ensure the correct terminal base (typically TXS1.SBB) is used for mounting.

• Configuration: The module will not function until it is configured in the Desigo Toolset (CFC or ABT Site).

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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