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135489-04
135489-04
135489-04

Bently Nevada 135489-04 3500/42M Proximity Monitor I/O Module

  • Model: 135489-04
  • Brand: Bently Nevada
  • Series: 3500 System
  • Core Function: Conditions radial vibration, thrust, and position signals from Proximitor sensors.
  • Product Type: 3500/42M I/O Module (I/O Module with Internal Terminations)
  • Key Specs: 4-channel input | Internal termination design | Prox/Seismic sensor support
  • Condition: New Original / New Surplus (Never refurbished)
  • Inventory Status: Active legacy item; mandatory safety stock for critical rotating equipment monitoring.
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Description

  1. Key Technical Specifications
Parameter Value
Manufacturer Bently Nevada
Part Number 135489-04
System Compatibility Bently Nevada 3500 Series Rack
Module Type 3500/42M Proximitor/Seismic I/O Module
Input Channels 4 channels (2 pairs)
Termination Type Internal Terminations
Supported Transducers Proximitor Sensors, Accelerometers, Velomitor Sensors
Channel Isolation 500 V DC channel-to-channel and channel-to-system
Power Consumption 7.0 W maximum
Operating Temperature −30 to +65 °C (−22 to +149 °F)
Storage Temperature −40 to +85 °C (−40 to +185 °F)
  1. Product Introduction & Supply Chain Strategy

The Bently Nevada 135489-04 is a 4-channel Proximitor/Seismic I/O module with internal terminations, engineered for the 3500/42M Machinery Protection System. It conditions proximity probe signals to monitor radial shaft vibration, axial thrust position, eccentricities, and casing acceleration across critical turbines, compressors, and gearboxes.

This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. Refurbished vibration cards carry severe risks of degraded signal conditioning capacitors, leading to signal noise, missed vibration spikes, or false machine trips. Sourcing this unit as New Surplus maintains 100% OEM reliability, lowers total cost of ownership (TCO), and eliminates long factory lead times during urgent plant outages.

135489-04

135489-04

135489-04

135489-04

  1. Installation & Configuration Guide

Stage 1: Pre-Installation (Prep & Safety)

  • Perform lock-out/tag-out (LOTO) on connected machinery before servicing the protection rack.
  • Strap on a grounded ESD wristband prior to touching the replacement hardware.
  • Take clear photographs of existing DIP switch layouts, jumper arrangements, and terminal block wiring connections on the card to be replaced.

Stage 2: Removal

  • Unfasten the upper and lower captive screws on the rear I/O module using a flathead screwdriver.
  • Extract the module straight outward using the pull handles to avoid bending or twisting the backplane pins.

Stage 3: Installation (Clone & Seat)

  • Align all DIP switches and hardware options on the new 135489-04 card to mirror the removed unit exactly.
  • Insert the card into the rear rack guide channels until the backplane connectors firmly seat. Secure the captive top and bottom screws.
  • Reconnect terminal blocks following your documented wiring layout.

Stage 4: Power-On & Testing

  • Confirm stable 24 V DC supply to the 3500 rack.
  • Check module status LEDs: ensure the channel indicators show solid green (RUN) without lighting red (ERR/FAULT).
  • Launch Bently Nevada 3500 Rack Configuration Software to verify channel sensor types, scale factors, and alert/danger setpoints.
  1. Firmware/Software Versions & Upgrade Notes
  • Recommended Firmware: Operates with 3500/42M main processing card firmware revision 2.20 or higher.
  • Compatibility Notice: Software setup requires Bently Nevada 3500 Configuration Software (version 5.0 or later). Older software builds will fail to recognize updated board hardware revisions.
  • Upgrade Caution: Never flash or alter firmware during an emergency hardware swap. Match the replacement module’s firmware to the active system build to prevent protocol timeouts or unprompted trip signals.
  1. Frequently Asked Questions (FAQ)

Q: Are these modules genuine original parts or refurbished/repaired cards?

A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules feature zero wear on backplane pins, zero soldered repairs, and original anti-static packaging opened only for mandatory QC testing.

Q: Why choose New Surplus over significantly cheaper refurbished options?

A: Refurbished vibration modules frequently suffer from hidden capacitor degradation and signal drift. Saving 500 on a used part can cost 50,000 in unplanned downtime when a false trip shuts down a compressor train. New Surplus delivers an expected 10–15 year operational lifespan with zero initial failure risk.

Q: Can the 135489-04 be hot-swapped while the 3500 rack is powered?

A: Yes, the 3500 system architecture permits live insertion and removal of rear I/O modules. However, removing an active vibration card disables protection logic for those 4 channels. Always software-bypass affected channels before extracting the card.

Q: Is transducer configuration data stored directly on the 135489-04 module?

A: No. Sensor scale factors, alarm limits, and transducer types are stored in the main 3500/42M monitor processing module paired in the front slot. The 135489-04 functions as the physical wiring interface and signal conditioning stage.

Q: What warranty coverage is provided with this item?

A: Every 135489-04 New Surplus module includes a full 1-year replacement warranty, fully validated through physical pin checks, backplane continuity testing, and ESD-safe packaging protocols.

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