Bently Nevada 3500/50M 286566-02 – Proximitor I/O Module | 3500 Series Machinery Protection System
The Bently Nevada 3500/50M (Part No. 286566-02) is a high-precision Proximitor I/O Module designed for the 3500 Series Machinery Protection System — the industry benchmark for continuous, online vibration and position monitoring of critical rotating equipment. Konmask.com supplies this module as a verified, shelf-ready component for MRO replacement, system expansion, and new installation projects.
Engineering Background: The Bently Nevada 3500 platform is a modular, rack-based system widely deployed in power generation, oil & gas, petrochemical, and heavy industrial facilities. The 3500/50M module interfaces directly with Proximitor sensors (eddy-current proximity probes) to condition and process raw displacement signals, delivering real-time shaft vibration, eccentricity, and position data to the 3500 rack’s monitoring and relay logic.
Product Positioning: This module is the preferred choice for engineers requiring a drop-in replacement or capacity expansion within an existing 3500 rack without system reconfiguration. Its dual-channel architecture and configurable I/O make it suitable for both radial vibration and axial position measurement applications.
Complete Technical Specifications
- Manufacturer: Bently Nevada (Baker Hughes)
- Part Number: 286566-02
- Model: 3500/50M Proximitor I/O Module
- Platform: 3500 Series Machinery Protection System
- Module Type: Proximitor / Seismic Input Module
- Channels: Dual-channel (2 independent measurement channels)
- Input Signal: Proximitor sensor output (eddy-current, -24 VDC bias)
- Measurement Parameters: Radial vibration, axial position, eccentricity, thrust position
- Signal Conditioning: Onboard, with configurable gap voltage range
- Communication: Internal rack backplane bus (3500 rack architecture)
- Power Supply: Supplied via 3500 rack backplane (no external power required)
- Operating Temperature: 0°C to +60°C (32°F to 140°F)
- Storage Temperature: -40°C to +85°C
- Humidity: 5% to 95% non-condensing
- Weight: Approx. 500 g
- Form Factor: Single-slot 3500 rack module
- Compliance: CE, cULus, SIL 1 capable (system-level)
Proven Application Environments
- Steam and gas turbine shaft vibration monitoring
- Centrifugal compressor radial and thrust position measurement
- Pump and motor eccentricity monitoring
- Gearbox and expander condition monitoring
- Power generation — nuclear, thermal, and combined-cycle plants
- Upstream and downstream oil & gas processing facilities
- Petrochemical and refinery critical machinery protection
- Marine propulsion and offshore platform rotating equipment
Engineering Advantages
- Drop-in compatibility: Direct replacement for existing 3500/50M slots — no rack rewiring or software reconfiguration required when part number matches.
- Dual-channel efficiency: Two independent measurement channels per module slot reduce rack space consumption and wiring complexity.
- Configurable measurement range: Gap voltage and full-scale range configurable via System 1 / Rack Configuration Software to match probe and target material.
- High signal integrity: Onboard signal conditioning minimizes noise susceptibility across long cable runs in industrial environments.
- Hot-swap capable: Supports live replacement in redundant rack configurations without process shutdown (verify with site safety procedures).
- Proven reliability: Bently Nevada 3500 Series modules are field-proven across decades of continuous operation in the most demanding machinery protection applications globally.
System Architecture & Signal Flow
The 3500/50M module occupies a single slot in the 3500 rack and interfaces with the rack’s backplane for power, communication, and relay logic. Signal flow is as follows:
- Input: Proximitor sensor output cable connects to the module’s front-panel terminal block (or I/O module via interconnect cable).
- Conditioning: The module conditions the raw -24 VDC Proximitor signal, applies gap voltage calibration, and computes vibration/position values.
- Processing: Conditioned data is passed via backplane to the 3500 rack’s monitor card for alarm/trip logic evaluation.
- Output: Alarm and trip relay outputs are managed by the rack’s relay module; buffered transducer output (BTO) is available for external data acquisition.
- Configuration: All channel parameters (full-scale, alert/danger setpoints, time constants) are set via Bently Nevada’s Rack Configuration Software over the rack’s RS-232/Ethernet interface.
Sourcing & Quality Verification
- Source: Procured from authorized distributors, certified MRO suppliers, and decommissioned plant inventories with documented service history.
- Inspection: Each unit undergoes visual inspection for physical damage, connector integrity, and label/part number verification prior to listing.
- Authenticity: Part number 286566-02 is verified against Bently Nevada’s published product catalog. Counterfeit risk mitigation is a core part of our sourcing protocol.
- Condition: Units are listed as New, Refurbished, or Used-Tested — condition is explicitly stated at time of order confirmation.
- Documentation: Factory test reports, calibration certificates, or decommissioning records available upon request for applicable units.
Procurement Process
- Step 1 — Inquiry: Submit your requirement via the product page or email support@konmask.com with your required quantity, condition preference, and delivery timeline.
- Step 2 — Quotation: Konmask will confirm stock availability, unit condition, lead time, and pricing within 1 business day.
- Step 3 — Order Confirmation: Purchase order or proforma invoice issued. Payment terms: T/T, PayPal, or as agreed for qualified accounts.
- Step 4 — Inspection & Dispatch: Unit is re-inspected, photographed, and securely packaged (anti-static, foam-lined) prior to shipment.
- Step 5 — Shipping: DHL / FedEx / UPS express available. Export documentation (commercial invoice, packing list, COO) provided for customs clearance.
- Step 6 — After-Sales: 30-day return window for DOA units. Technical support available for installation and configuration queries.
Technical FAQ
Q: Is the 286566-02 compatible with all 3500 rack configurations?
A: The 3500/50M is compatible with standard 3500 racks. Verify slot assignment and rack firmware version against Bently Nevada’s compatibility matrix before installation.
Q: Can this module be used with non-Bently Nevada Proximitor sensors?
A: The module is optimized for Bently Nevada 3300 XL and 3300 series Proximitor sensors. Third-party eddy-current probes may be compatible if output voltage range and sensitivity (mV/mil or mV/mm) match the module’s input specification — consult Konmask technical support for assessment.
Q: What software is required for configuration?
A: Bently Nevada Rack Configuration Software (RCS) is required. It communicates with the rack via RS-232 or Ethernet depending on the rack’s communication module.
Q: Is a warranty provided?
A: Konmask provides a 30-day DOA guarantee on all units. Extended warranty options are available for new/refurbished stock — contact us for details.
Q: Can you provide a datasheet or manual?
A: Yes. The Bently Nevada 3500/50M Installation and Operation Manual (GEK-91485) is available upon request. Contact support@konmask.com.
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