Product Description
The Bently Nevada 125768-01 Rack Interface Module (RIM) I/O Module provides essential communication functions for the 3500 Monitoring System. It serves as the interface between the rack and host systems, allowing configuration and data retrieval through RS232 or RS422 connections. Moreover, this module must be installed in slot 1 of the rack, next to the power supply modules, ensuring centralized management of rack communications.
Although it is not part of the direct monitoring path, the 125768-01 enhances system control and configuration reliability. For Triple Modular Redundant (TMR) systems, a dedicated TMR version adds advanced voting and channel comparison capabilities to ensure fault tolerance and continuous operation.
Key Features
- Rack Interface Control: Enables communication and setup for the 3500 rack system.
- Flexible Connectivity: Supports RS232, RS422, and external modem interfaces.
- TMR Compatibility: Compares and validates outputs from redundant monitors for system integrity.
- Front Panel Indicators:
- OK LED: Confirms module operation.
- TX/RX LED: Displays active data exchange.
- TM LED: Signals Trip Multiply mode.
- CONFIG OK LED: Shows valid rack configuration.
- Control Functions: Includes rack reset, alarm inhibit, and Trip Multiply activation.
- I/O Relay: Configurable for normally open or closed contact, indicating system health.
Technical Specifications
| Category | Specification |
|---|---|
| Model Number | 125768-01 |
| Function | Rack Interface Module (RIM) I/O |
| Power Consumption | 4.75 W (typical) |
| Communication Standards | RS232 / RS422 / External Modem |
| Communication Protocol | Bently Nevada proprietary |
| Baud Rate | 38.4 k baud (auto baud capable) |
| Operating Temperature | -30°C to +65°C (-22°F to +150°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| RS232 Cable Length | Up to 30 m (100 ft) |
| RS422 Cable Length | Up to 1200 m (4000 ft) |
| Rack Slot Requirement | 1 full-height front and rear slot |
| Main Module Dimensions (H×W×D) | 241.3 × 24.4 × 241.8 mm |
| Weight (Main Module) | 0.91 kg (2.0 lb) |
| I/O Module Dimensions (H×W×D) | 241.3 × 24.4 × 99.1 mm |
| Weight (I/O Module) | 0.45 kg (1.0 lb) |
System Integration
The 125768-01 RIM I/O Module integrates seamlessly with Bently Nevada 3500 racks, acting as the communication gateway for setup, diagnostics, and data transfer. It supports RS232/RS422 serial standards, allowing flexible installation in both standalone and networked monitoring systems.
Furthermore, its robust environmental tolerance enables reliable use in high-vibration or temperature-variable industrial facilities. Whether used in refineries, power plants, or manufacturing sites, the module ensures continuous data flow and stable configuration control.
Details
| Weight | 1.36 kg |
|---|
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