Bently Nevada 3500/53 133388-01 Overspeed Detection Monitor Module
The front signal-processing module used in a redundant 3500/53 electronic overspeed protection system.
Product Overview
3500/53 133388-01 is the front Overspeed Detection Module for the Bently Nevada 3500/53 system. Each installed module forms one speed channel in a redundant turbine or compressor trip architecture.
The module accepts a speed-transducer signal through its matched rear I/O, calculates speed and applies rapid overspeed alarm logic under the configured voting design.
Performance
- High-speed signal processing for dedicated overspeed protection.
- Selectable threshold behavior for compatible proximity-probe or magnetic-pickup inputs.
- Peak-speed memory and module status indication for trip analysis.
- Use in two-out-of-two or two-out-of-three protection architectures.
Technical Details
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Complete Identification | 3500/53 133388-01 |
| Product Family | 3500/53 Electronic Overspeed Detection System |
| Module Role | Front Overspeed Detection Module |
| Sensor Input | One compatible transducer signal per module |
| Events per Revolution | 1 to 255 |
| Maximum Full-Scale Speed | 99,999 rpm |
| Maximum Input Frequency | 20 kHz |
| Typical Power Consumption | 8 W |
| Recorder Output | 4–20 mA |
| Companion I/O Module | 133396-01 |
| System Power | Redundant rack supplies required |
System Integration
- Install the required number of modules for the approved voting design and keep them in the documented rack positions.
- Restore transducer thresholds, events-per-revolution, trip setpoints and relay logic from controlled records.
- Verify firmware and configuration-software baselines for the existing rack.
- Perform the complete overspeed proof test before returning protection to service.
Applications
- Turbine and compressor overspeed shutdown systems.
- Critical rotating equipment requiring redundant speed-trip channels.
- Legacy 3500 protection installations governed by a site functional-safety lifecycle.
FAQ
How many 3500/53 133388-01 modules are needed for a voted system?
Use the approved two-channel or three-channel architecture defined by the protection design; one module is only one channel.
Can 3500/53 133388-01 replace a 3500/50M tachometer?
No. The products serve different roles and use different I/O and protection logic.
What configuration should be retained for 3500/53 133388-01?
Save sensor selection, threshold method, speed scaling, trip setpoints, voting logic, bypass handling and recorder mapping.
Why are redundant supplies required with 3500/53 133388-01?
The overspeed architecture depends on rack power redundancy to avoid a single supply loss defeating protection.
What should be verified before buying 3500/53 133388-01?
Confirm rear I/O, sensor type, rack baseline, module count, voting design and agency-approval option.
What proof testing is expected after a 3500/53 133388-01 exchange?
Inject or simulate the approved speed signal and confirm channel alarm, voting, trip relay and bypass indication.
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