Siemens TXM1.8RB 8-channel Relay Output Module

Description

Siemens TXM1.8RB 8-channel Relay Output Module

Product Dimensions：

The Siemens TXM1.8RB is a high-performance I/O module belonging to the TX-I/O™ range, specifically designed for use within the Desigo™ Building Automation System. This module is a “Relay Module” with bistable characteristics, making it ideal for switching loads while maintaining its state even during power interruptions.

Product Specifications (Technical Parameters)

Key Product Advantages

• Bistable Functionality: Unlike standard relays, bistable relays require energy only to switch states. This results in lower power consumption and ensures the device stays in its last known position if the control power is lost.

• Local Override & Display: Features an integrated LCD that provides clear status feedback. The manual switch allows technicians to override the system for testing or emergency maintenance without needing a computer tool.

• Plug-and-Play Integration: Uses the standard TX-I/O bus for easy mounting and rapid communication with Desigo PX controllers.

• Compact Design: High density (8 channels in a small footprint) saves valuable space inside electrical panels.

• High Reliability: Built to Siemens’ industrial standards, ensuring a long lifecycle in demanding HVAC environments.

Product Applications

The TXM1.8RB is primarily used for switching electrical consumers within building services. Typical applications include:

• HVAC Control: Switching fans, pumps, and electric heating stages.

• Lighting Control: Managing lighting circuits or groups.

• Motor Control: Activating blinds, shutters, or small motorized dampers.

• General Purpose Switching: Any application requiring a potential-free (dry) contact to interface with external equipment.

Usage Precautions (Important Notes)

• Wiring Safety: Ensure the power is disconnected before installation. The module handles high voltages (up to 250V AC); improper wiring can lead to electric shock or device destruction.

• Current Limits: Never exceed the rated 5A current. For high-power motors or large inductive loads, use an external contactor.

• Bus Connection: Only connect to compatible Siemens TX-I/O bus bases. Ensure the bus power supply (provided by the controller or power module) is sufficient for the total number of modules on the rail.

• Environmental Limits: Do not install in areas with high humidity or corrosive gases unless placed in a specifically rated NEMA/IP enclosure.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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