Description
Bently Nevada 3500/45-02-00 135145-01
Technical Specifications:
- Module Type: Position I/O module with external terminations
- Applicable Sensors: Proximity probes, rotary position transducers, DC LVDT
- Dimensions: 241.3 mm × 24.4 mm × 241.8 mm
- Weight: Approximately 0.5 kg
- Input Signal Range: -10 VDC to +10 VDC
- Power Consumption: 7.7 watts typical
- Operating Temperature: -30°C to +65°C
- Storage Temperature: -40°C to +85°C
Functional Features:
- External termination design facilitates installation and maintenance
- Supports proximity probe, rotary position transducer, and DC LVDT inputs
- Provides 4-channel signal input for 3500/45 position monitor
- Sensor power supply: -24 VDC for proximity probes or RPT, +15 VDC for DC LVDT
- Buffered sensor output with short circuit protection
- Recorder output: 4-20 mA proportional to monitor full scale
Application Scenarios:
- Steam turbine axial thrust position monitoring
- Compressor differential expansion measurement
- Generator casing expansion monitoring
- Valve position monitoring
- Applications requiring external termination connections for position measurement
Performance Parameters:
- Input Impedance: 10 kilohms for proximity probe or RPT input, 1 megohm for DC LVDT input
- Sensor Power Supply: -24 VDC for proximity probe/RPT, +15 VDC for DC LVDT
- Buffered Output Impedance: 550 ohms
- Recorder Output: +4 to +20 mA, load resistance 0 to 600 ohms
- Resolution: 0.3662 microamperes per bit
- Accuracy: ±0.25% error at room temperature, ±0.7% error over full temperature range
- Update Rate: 100 milliseconds or less
Material Composition:
- Housing: Industrial-grade metal enclosure
- Circuit Board: Multi-layer printed circuit board
- Connectors: External terminal block connectors
Structural Characteristics:
- Full-height module design occupying one rear slot
- External terminals connected via dedicated cables
- Front panel status LEDs
- Modular design supporting field replacement
Working Principle: The module receives position signals from proximity probes, rotary position transducers, or DC LVDTs and transmits these signals through external terminals to the 3500/45 main module. The main module conditions, filters, and analyzes the signals, comparing measured values against user-programmable alarm setpoints to generate alarms when exceeded. The module simultaneously provides required excitation power for sensors.
Installation Requirements:
- Install in the rear slot corresponding to the 3500/45 main module
- External terminal blocks connect to the module via dedicated cables
- Sensor cables must use shielded cables with proper grounding
- Ensure terminal blocks are securely installed with reliable connections
- Channels 3 and 4 for DC LVDT have -10 VDC level shift
Use Precautions:
- This module must be used with the 3500/45 main module
- External terminal blocks and cables must be ordered separately
- Inspect external connection cables regularly for tightness
- In vibration environments, ensure cables are securely fastened
- Module replacement does not require disconnecting sensor wiring
