Product Overview

• PN: 125736-01
• Brand: Bently Nevada
• Series: 3500 Machinery Protection System
• Type: 3500/92 Communication Gateway I/O Rear Module

• Function: Matched rear termination card for front 3500/92 gateway module. It provides RS232/RS422 serial ports, converts rack vibration, temperature and alarm data into Modbus RTU signals, realizing data interaction between 3500 monitoring rack and external DCS, PLC or SCADA systems.

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Core Features

1. Configurable RS232/RS422 serial communication ports, compatible with Modbus RTU protocol
2. Installed in the rear slot right behind the 3500/92 front gateway card, front-rear card paired operation
3. Customizable Modbus register mapping to upload all monitoring parameters and fault status
4. Hot-swappable rack installation, no full rack power cut during single card replacement

5. Anti-interference circuit design, stable serial transmission in high EMI industrial control rooms

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Technical Specifications

• Communication Interface: RS232 / RS422 serial port, Modbus RTU
• Net Weight: 0.44kg
• Dimension: 241 × 24.4 × 99.1mm
• Operating Temperature: -40℃ ~ +70℃
• HS Code: 8538900000
• Certifications: CE

• Product Status: Discontinued, fully tested surplus modules available

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Compatibility

• Matching Front Card: 3500/92 communication gateway main module
• Matched Equipment: Standard Bently Nevada 3500 series rack
• Upper System: DCS, PLC, SCADA monitoring platform

• Not Compatible: 3500/20, 3500/22M and other communication modules, third-party racks

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Application

1. Data transmission link for turbine, compressor 3500 protection racks in power and petrochemical industries
2. Upload real-time vibration, temperature and alarm data to factory distributed control system
3. Spare replacement and communication function expansion of old 3500 monitoring systems