ABB 216BM61B HESG448267R1021 Terminal Connector

The ABB 216BM61B HESG448267R1021 10 Pin Connector Unit is an optical-electrical link module built on ABB's Swiss-engineered industrial hardware platform. It converts serial control signals into fiber optic transmission for ABB Procontic and Advant-based systems, where long-distance, noise-immune communication between controller stations is required.

Key Features

• Dual ST fiber ports (TX/RX) for full-duplex optical communication
• D-sub male electrical interface with integrated host pigtail
• 24 VDC operation, rated 2 A per contact
• DIN-rail or bracket mounting for cabinet integration
• Extended temperature range: -20°C to +70°C

Technical Specifications

Installation Notes

1.Mount on DIN rail or secure with the bracket; leave fiber-side clearance for cable bend radius.

2.Wire 24 VDC to the D-sub terminals, keeping shielded signal cable away from power lines.

3.Plug multimode fiber into TX and RX; cross-connect TX-to-RX between link ends. Clean end faces first.

4.Connect the pigtail to the host controller port; confirm activity on the RX indicator.

5.Re-inspect fiber connectors periodically; do not exceed minimum bend radius.

Common Questions

1.Is this module a field I/O block? 

No. It is a communication link converter — it extends and isolates control network signals over fiber, and does not directly switch sensors or actuators.

2.How far can a fiber link run? 

Using multimode ST fiber, the link is intended for cabinet-to-cabinet or station-to-station distances far beyond copper RS-485 limits, with full electrical isolation between ends.

3.What if the RX indicator stays dark? 

Check fiber polarity (TX must go to RX), clean the end faces, and verify cable continuity between the two ends.

  Xingchuang Ronghe (Fuzhou) Electrical Equipment Co., Ltd. is dedicated to delivering high-quality electrical equipment solutions, backed by professional product supply capabilities and a comprehensive technical service system. We stay customer-centric, continuously optimizing product performance and service experience. If you have any needs, you are welcome to contact us at any time for consultation and discussion. We look forward to partnering with you to create value together!