Description
Bently Nevada 3500/40M-02-00 (126615-01)
Technical Specifications:
- Product Series: 3500/40M Machinery Protection Monitor
- Module Type: Proximitor I/O Module (Rear Board)
- Terminal Type: External terminals
- Part Number: 126615-01
- Compatible Front Module: 3500/40M
Functional Features:
- Provides external terminal block connections for proximity probe sensor cables
- Routes sensor signals from the field to the 3500/40M front monitor card
- Supports connection to Bently Nevada 3300 series and 7200 series eddy current sensors
- External terminal design simplifies field wiring and maintenance access
- Compatible with the full range of Bently Nevada proximity probes
Application Scenarios:
- Radial vibration monitoring on turbines, compressors, and pumps
- Axial displacement (thrust position) measurement
- Differential expansion measurement
- Eccentricity monitoring
- Any application using proximity probe sensors with the 3500/40M monitor
Performance Parameters:
- Signal Input: Proximity probe voltage signals (-2V to -18V DC range)
- Channel Support: Interfaces with the 4-channel 3500/40M front module
- Sensor Compatibility: 3300 XL 5mm, 8mm, 11mm, 25mm proximity probes; 7200 series probes
Material Composition:
- Industrial-grade PCB with terminal block connectors
- Mounted on the rear side of the 3500 rack backplane
Structural Features:
- Rear I/O board that mates with the backplane behind the front monitor card
- External terminal blocks for field cable connections
- Compact form factor matching the 3500 rack module width
Working Principle: The I/O module acts as the electrical interface between the field-mounted proximity probes and the 3500/40M front monitor. Sensor cables connect to the external terminal blocks, and the module routes the analog voltage signals to the front card’s signal processing circuitry. The front card then extracts vibration amplitude, gap voltage, and other parameters from these signals.
Installation Requirements:
- Must be installed directly behind the 3500/40M front monitor card
- Field sensor cables must be connected to the correct terminal positions
- Shield grounding must follow single-point grounding practices
- The module must be fully seated on the backplane connectors
Usage Precautions:
- Do not disconnect sensor cables while the system is energized
- Verify terminal wiring matches the channel configuration in the 3500 software
- Ensure shield cables are grounded at one point only to prevent noise
- The 3500/40M front module supports hot-swap, but the I/O module should be handled with care during replacement
