The ABB RER103-MM is a bus connection module tailored for industrial automation environments. It serves as a communication bridge between RE_500 series devices and fiber-optic buses. By converting optical signals to RS-485 electrical signals, it enables fast and reliable data flow. Its compact design and robust compatibility make it ideal for integrating ABB systems using SPA, LON®, or IEC 60870-5-103 protocols.

Technical Specifications

• Model Number: RER103-MM

• Function: Converts optical signals to RS-485 electrical signals and vice versa

• Communication Protocols:

  • SPA

  • LON®

  • IEC 60870-5-103

• Interface: RS-485

• Power Supply:

  • Supplied via host device

  • 9-pin D-type connector

• Data Transfer Rate: Up to 1.25 Mbps

• Operating Temperature: -10°C to +55°C

• Storage Temperature: -40°C to +70°C

• Dimensions:

  • Width: 35 mm

  • Height: 73 mm

  • Depth: 20 mm

• Weight: 0.7 kg