Description
Product Core Brief
- Model: 3500/40M (Part: 176449-01)
- Brand: Bently Nevada
- Series: 3500 Machinery Protection System
- Core Function: Processes eddy current probe signals for radial vibration and axial displacement monitoring.
- Product Type: 4-Channel Proximitor Displacement Monitor Module
- Key Specs: 4 Channels | Radial Vibration, Axial Displacement, Eccentricity | Software Configurable
- Condition: New Original (New Surplus)
BENTLY 3500/40M 176449-01
Product Introduction
BENTLY 3500/40M 176449-01 is a 4-channel Proximitor displacement monitor module designed for the Bently Nevada 3500 Machinery Protection System. It receives inputs from Bently Nevada eddy current proximity probes and conditions the signals to generate precise vibration and position measurements.
This module continuously compares the processed signals against user-programmable alarm setpoints to protect rotating machinery. The 3500/40M 176449-01 is highly flexible and can be configured via software to monitor radial vibration, axial displacement, eccentricity, differential expansion, or rolling element bearing vibration. Channels are typically configured in pairs to execute these functions.
Key Technical Specifications
- Module Type: 4-Channel Proximitor Monitor
- Form Factor: Full-Height
- Channels: 4 Independent Channels (Configurable in pairs)
- Supported Measurements: Radial Vibration, Axial Displacement, Eccentricity, Differential Expansion, REBAM
- Input Sensors: Bently Nevada Proximitor (Eddy Current) Probes
- Outputs: Buffered Sensor Outputs (Front Panel Coaxial Connectors)
- Indicators: OK LED, TX/RX LED, Bypass LED
- Software Requirements: 3500 Rack Configuration Software
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Trace source via serial number. Inspect front panel coaxial connectors and rear Euro-connector for physical damage.
- Visual Inspection: Verify OK, TX/RX, and Bypass LED indicators and module seating alignment.
- Live Functional Test: Install in rack. Verify “OK” LED illuminates and communication with RIM/TDI is established.
- Signal Path Test: Inject simulated proximity probe signal. Verify buffered output on front panel coaxial connectors and accurate measurement in software.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with date.
BENTLY 3500/40M 176449-01
Replacement Pitfall Guide
❗ Channel Pairing: The 3500/40M 176449-01 channels are configured in pairs. Channels 1 and 2 execute one function, while channels 3 and 4 execute another (or the same) function. You cannot configure all 4 channels independently for different single-channel functions.
❗ Sensor Matching: This module is strictly designed for Bently Nevada eddy current proximity probes. Do not connect velocity or acceleration sensors to this module; use the 3500/42M or 3500/44M instead.
❗ Buffered Outputs: The front panel coaxial connectors provide buffered sensor outputs with short-circuit protection. These are useful for connecting portable data collectors or oscilloscopes without disrupting the monitor’s primary measurement path.
❗ Software Configuration: Alarm setpoints, filter settings, and measurement types are entirely software-driven. Ensure you have the correct 3500 Rack Configuration Software and a valid configuration file before commissioning.
❗ Bypass Mode: The Bypass LED indicates the module is in bypass mode. If this LED is illuminated during normal operation, check the software configuration and verify that no maintenance bypass commands are active.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- 3500/40M 176449-01 → 3500/42M : Complementary — Use 3500/42M for seismic/velocity/acceleration inputs
- 3500/40M 176449-01 → 3500/22M : Complementary — Requires TDI module for rack communication
- 3500/40M 176449-01 → 3300 XL Probes : Compatible — Standard 5mm, 8mm, 11mm, 25mm proximity probes
Benchmarks:
- Alarm Response Time: < 50 ms (typical)
- Buffered Output Impedance: 50 Ω (coaxial)
Need me to pull up the matching 3500/22M TDI module or the 3500/33 Relay Module to pair with this monitor? Let me know which one you’d like.
