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Phone: +86 16626708626Description
Key Technical Specifications
- Part Number: 135489-04
- Ordering Model: 3500/40M-03-00
- Manufacturer: Bently Nevada
- Product Family: 3500 Series Machinery Protection System
- Module Type: Proximitor I/O Module with Internal Barriers and Internal Terminations
- Number of Channels: 4-channel monitor
- Input Type: Bently Nevada proximity transducers (3300 XL 5 mm / 8 mm)
- Functions Supported: Radial vibration, Eccentricity, REBAM, Thrust position, Differential expansion, Keyphasor
- Alarm Configuration: User-programmable alert and danger setpoints per channel
- Channel Programming: Channels programmed in pairs (1-2 and 3-4)
- Monitor Function per Channel: Up to 2 functions at one time per channel pair
- Internal Barriers: Yes (built-in signal isolation)
- Internal Terminations: Yes (built-in termination resistors)
- Configuration Software: 3500 Rack Configuration Software
- Operating Temperature: -30°C to +65°C (-22°F to +150°F)
- Storage Temperature: -40°C to +85°C (-40°F to +185°F)
- Humidity: 95%, non-condensing
- Dimensions: 85 mm × 140 mm × 120 mm (or 16 cm × 16 cm × 12 cm, varies by source)
- Weight: 0.8 kg to 1.2 kg (varies by source)
- Country of Origin: United States (USA)
- HS Code: 85389091
- Primary Purpose: Machinery protection by comparing monitored parameters against configured alarm setpoints to drive alarms
Product Introduction
Bently Nevada 135489-04 is a 3500/40M Proximitor I/O Module with internal barriers and internal terminations for the 3500 Series Machinery Protection System. It accepts input from Bently Nevada proximity transducers and conditions the signal to provide vibration and position measurements including radial vibration, thrust position, differential expansion, eccentricity, and REBAM.
This module is selected when exact OEM part matching is required for 3500/40M monitor compatibility. Buyers source 135489-04 for verified 4-channel operation, built-in internal barriers/terminations, and direct swap path without reconfiguration.
- 135489-04
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No vibration/position reading on channel | Transducer disconnect, cable fault, or channel failure | ✅ High | Measure DC voltage at transducer input terminals (should be ~12 VDC), check cable continuity | Verify transducer and cable first, then replace monitor channel if healthy |
| Channel shows fixed offset or flat value | Probe misalignment or internal barrier fault | ✅ High | Check probe target gap, verify input signal with oscilloscope | Realign probe and check input before replacing monitor |
| Alarm triggers unexpectedly | Setpoint too low, signal noise, or transducer issue | ✅ High | Review alarm setpoints in 3500 software, check signal stability at source | Adjust setpoints or fix transducer/wiring before replacing monitor |
| All 4 channels show fault | Rack power failure, backplane fault, or monitor initialization error | ✅ High | Check rack power supply LEDs, measure backplane voltages, verify monitor status | Replace power supply first, then reseat monitor; replace monitor if still faulty |
| Intermittent readings or noise | Transducer cable damage, shielding issue, or loose connection | ✅ High | Inspect transducer cable for cuts/cracks, check shield grounding at both ends | Reseat connectors, repair shielding, or replace cable if damage found |
| Keyphasor signal not detected | Keyphasor probe fault or channel configuration mismatch | ✅ Medium | Check Keyphaser probe gap, verify channel is configured for Keyphasor function | Realign probe and verify config before replacing monitor |
| Channel 1-2 work but 3-4 fail | Internal termination fault or channel pair failure | ✅ High | Measure input at channels 3-4, check internal termination resistors | Replace monitor if channels 3-4 show no input with healthy transducers |
Contact technical support with photos of the monitor, rack LEDs, transducer wiring, and diagnostic logs from 3500 software if the fault stays unclear.
Frequently Asked Questions
Q: Is 135489-04 still available from Bently Nevada?
A: Yes, it is a current 3500/40M part. Stock is available and ships same day from surplus and authorized distributors.
Q: What is the difference between 135489-04 and 3500/40M-03-00?
A: 135489-04 is the ordering/part number. 3500/40M-03-00 is the full model number with configuration codes. They refer to the same 4-channel Proximitor I/O Module with internal barriers and terminations.
Q: How many functions can one channel perform at a time?
A: Each channel can perform up to 2 functions at one time. Channels 1-2 share one function, while channels 3-4 share another (or the same) function.
Q: Can I use this monitor with both 5 mm and 8 mm probes?
A: Yes, the 3500/40M accepts input from Bently Nevada 3300 XL 5 mm and 8 mm proximity transducers.
Q: What alarm setpoints can I configure per channel?
A: You can configure alert setpoints for each active static value and danger setpoints for any two of the active static values per channel.
Q: Do I need external termination resistors with this module?
A: No, this module includes internal terminations. External terminators are not required.
Q: Do I need external isolation barriers with this module?
A: No, this module includes internal barriers. External isolation barriers are not required for standard installations.
Q: What software do I use to configure this monitor?
A: Use the 3500 Rack Configuration Software to program channels, set alarm setpoints, and select monitor functions.
Q: What warranty is included?
A: A 1-year warranty is standard for this monitor module. Verify exact terms with the supplier before purchase.
Q: What should I verify before installing a replacement monitor?
A: Check the exact part number, verify channel configuration matches your project, confirm internal barriers/terminations are present, and back up the rack configuration. I have seen more downtime from mismatched channel pairs than from the monitor itself.
