• PN: 125768-01
• Model: 3500/20 Rack Interface Module (RIM I/O)
• Brand: Bently Nevada (Baker Hughes)
• Series: 3500 Machinery Protection System
• Type: Rack Core Communication Interface Module

• Function: Acts as the central communication hub of the entire 3500 rack, responsible for internal bus data scheduling of all monitoring modules, realizes rack configuration downloading, real-time operating data uploading and multi-rack daisy-chain networking via RS232 and RS422 interfaces, supports TMR triple redundant safety architecture for critical unit protection.

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Core Features

1. Equipped with RS232 and RS422 dual serial communication interfaces, supports multi-rack cascade connection
2. Single-slot hot-swappable design, allows online replacement without interrupting the whole monitoring system
3. Supports TMR triple modular redundant configuration, effectively avoids false protection caused by single-point failure
4. Built-in hardware self-diagnosis function, real-time monitoring rack backplane communication and module operating status
5. Adopts proprietary TDXnet high-speed bus protocol to ensure stable and high-speed data transmission inside the rack

6. Front panel status indicator lights for quick judgment of communication fault and module running state

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Technical Specs

• Communication Interfaces: RS232, RS422
• Communication Protocol: TDXnet, TDIX, DDIX
• Power Supply: Backplane power supply from 3500 rack
• Operating Temperature: -30℃ ~ +65℃
• Storage Temperature: -40℃ ~ +85℃, 5%~95% RH non-condensing
• Dimension: 241.3 × 24.4 × 103.1mm
• Net Weight: 0.44kg
• HS Code: 8537101190

• Certification: CE, UL certified

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Compatibility

• Applicable Device: Standard 14-slot 3500 series monitoring rack
• Matching Modules: All 3500 series power, vibration, keyphasor and communication modules
• Upper System: 3500 configuration software, monitoring host, DCS control system

• Not Compatible: 3300 series rack, third-party PLC/DCS backplane systems

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Application

• Core communication management for turbine, compressor and generator TSI safety monitoring racks
• Multi-rack cascade networking and centralized data acquisition in thermal power, petrochemical and metallurgical industries
• Online parameter configuration, fault diagnosis and historical vibration data recording for rotating equipment monitoring systems

• Spare replacement for faulty interface modules leading to rack offline and configuration failure

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Our Advantage

• Full communication stability test, bus compatibility test and aging test completed before delivery
• 12-month warranty for new original and fully tested surplus modules