Description
3. Key Technical Specifications
- Power Supply: +24 VDC ±6%
- Power Consumption: 4.6 Watts maximum
- Display Support: VGA output routing for multiple 3500 racks
- Rack Capacity: Routes up to 4 separate 3500 racks to one display
- Operating Temperature: -20°C to +65°C
- Storage Temperature: -40°C to +85°C (typical for series)
- Humidity: 0 to 95% non-condensing
- Dimensions: Standard 3500 series footprint for rack or panel integration
- Weight: Approx. 0.55 kg
- Communication: RS232 control interface for rack selection
- Status Indication: Alarm and OK status from each connected rack
- Mounting: Compatible with 3500 rack installations
4. Product Introduction
The Bently Nevada 146377-01 is the 3500/94 Display Router Box. It connects up to four 3500 machinery protection system racks to a single VGA display, letting operators switch between racks without multiple monitors.
In field use on 3500 systems, this router box keeps control room setups simple and reliable. It passes full alarm and OK status from each rack. Use it when you need centralized viewing of vibration, position, and process data across separate machine trains. Verify exact rack compatibility using the official Bently Nevada 3500 datasheet before installation.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No display output | Power supply issue | ✅ High | Measure +24 VDC at input terminals with multimeter | Confirm stable 24 VDC supply before replacing router |
| Cannot switch racks | Control signal failure | ✅ High | Check RS232 connection and send selection command | Verify cabling and software command to router |
| Intermittent video | Loose VGA cables | ✅ Medium | Inspect and reseat all VGA input/output cables | Secure connections; replace damaged cables |
| Alarm/OK status missing for one rack | Rack communication fault | ❌ Low | View diagnostic data in 3500 software for affected rack | Troubleshoot the specific rack, not the router |
| Overheating | Poor ventilation or overload | ✅ Medium | Monitor enclosure temperature during operation | Ensure adequate airflow; check power draw |
Contact technical support with photos of wiring, voltage readings, and 3500 system diagnostic logs if issues continue.
- 146377-01
- 146377-01
6. Frequently Asked Questions (FAQ)
Is the 146377-01 hot-swappable? No. Power down the connected equipment before installing or removing the router box. Hot-swapping risks backplane damage or loss of display.
What condition is this unit? New Original / New Surplus. It comes from OEM-authorized channels with full traceability. We perform inbound visual inspection and basic power-on verification.
How many racks can one 146377-01 support? Up to four separate 3500 racks. Each rack must be individually selected via the control interface.
Will this work as a direct replacement for an existing 3500/94 router? Yes in most cases. Match the exact part number and verify firmware/rack configuration. Take photos of the old unit’s settings before removal.
What is the warranty? 1-year warranty on functional operation. Coverage includes defects in materials and workmanship under normal use.
Do I need special software to use the display router? The 3500 system software handles rack selection. Basic RS232 commands control switching. Full details are in the 3500/94 documentation.
Why buy surplus instead of new from the OEM? Availability. Many 3500 components are obsolete or have long lead times from the factory. Our units are tested and ready to ship immediately.



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