ABB RER103-MM Bus Connection Module

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1. Product Overview

The ABB RER103-MM is a high-performance bus connection module designed for ABB DCS (Distributed Control System) and automation systems. It provides reliable communication between control units, ensuring fast and stable data exchange. The module features easy installation and maintenance, making it suitable for industrial process automation and energy management systems.

2. Technical Specifications

Electrical Specifications

• Model: RER103-MM

• Function Type: Bus Connection Module

• Communication Interface: RS-485/RS-232 or ABB proprietary bus

• Supply Voltage: 24 V DC ±20%

• Power Consumption: ≤ 5 W

• Communication Speed: Up to 115.2 kbps (typical, depending on bus type)

• Data Reliability: Up to 99.99% (redundant configuration optional)

Environmental & Mechanical

• Operating Temperature: –20°C … +60°C

• Storage Temperature: –40°C … +85°C

• Protection Degree: IP20 (suitable for cabinet installation)

• Mounting: DIN rail

• Dimensions: Approx. 90 mm × 40 mm × 120 mm (varies by model)

• Weight: Approx. 0.5 kg

System Compatibility

• Compatible with ABB DCS control units

• Supports redundant bus configuration

• Can integrate with various ABB fieldbus devices

3. Advantages & Key Features

1. Reliable communication — Supports fast and stable data transfer for real-time control.

2. High system compatibility — Works with ABB DCS series and multiple fieldbus devices.

3. Easy installation — DIN rail design saves space and simplifies maintenance.

4. Redundancy support — Enhances system availability and safety.

5. Strong interference resistance — Optimized design for industrial environments with EMI.

6. Compact design — Modular structure facilitates cabinet layout and future system expansion.

4. Application Areas

• Industrial process automation

• Power and energy management systems

• Chemical, petrochemical, and pharmaceutical process control

• Water treatment and hydraulic control systems

• Power plant and substation automation

• Factory automation and building energy management

5. Precautions

1. Verify supply voltage and bus type before installation.

2. Install in a dry, well-ventilated cabinet, avoiding dust and humidity.

3. Follow wiring diagrams strictly to ensure reliable communication.

4. Test the bus before system startup to ensure normal communication.

5. Avoid exposure to strong EMI or high-temperature environments to extend lifespan.

6. Periodically check module status indicators to ensure stable bus communication.

The structure and details of the product：

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