Bently Nevada 133442-01 Internal-Termination Tachometer I/O Module
The internal-termination rear I/O module for the two-channel 3500/50M Tachometer.
Key Information
133442-01 is the Bently Nevada I/O module with internal terminations listed for the 3500/50M Tachometer Module. It occupies the corresponding rear rack slot and carries the field connections for the paired front monitor.
The 3500/50M processes signals from compatible Proximitor probes or magnetic pickups for speed, rotor acceleration, zero speed and reverse rotation. It is a tachometer monitor and is not the dedicated overspeed protection system.
Other 3500/50M I/O options cover external terminations, internal barriers and TMR wiring. The field architecture must be identified before selecting a rear module.
Functions
Rear signal interface
Connects supported speed transducers to the paired tachometer front module.
Direct rack termination
Keeps field conductors on the internal terminal headers at the rear slot.
Recorder path support
Carries the recorder and buffered signal connections defined for the tachometer architecture.
Configuration boundary
Separates this internal-termination execution from external, barrier and TMR alternatives.
Specifications
- Manufacturer
- Bently Nevada
- Exact model
- 133442-01
- Official spare description
- I/O Module with Internal Terminations
- Product family
- 3500/50M Tachometer Module
- Module location
- Rear rack slot
- External-termination alternative
- 133434-01
- Internal-barrier alternative
- 136703-01
- TMR external I/O alternative
- 133450-01
- Internal connector headers
- 8-position green; 6-position green; 12-position blue
- Tachometer user guide
- 134938
About IndustryParts
https://www.industryparts.com/Rear I/O and front tachometer stay paired
IndustryParts handles the internal-termination part number with the front monitor, sensor types and rack-slot evidence to prevent an I/O architecture mismatch.
Installation
Map every conductor
Record sensor type, polarity, transducer power, recorder wiring and shield treatment before removing the rear module.
Confirm the matched front unit
Verify the tachometer monitor, rack slot and channel configuration rather than using the I/O part in isolation.
Prove rotating-state logic
Test displayed speed, zero-speed, acceleration, reverse-rotation and recorder paths required by the machine plan.
Lifecycle
Connector inspection
Check terminal-header condition and conductor retention during scheduled rack work.
Sensor record
Keep probe or pickup identity and channel scaling with the I/O asset.
Function boundary
Maintain separate documentation for tachometer indication and any independent overspeed protection system.
Related Models
FAQ
Which front module belongs with 133442-01?
The current spare table pairs the internal-termination I/O with the documented 3500/50M tachometer monitor, part 288062-02.
Can 133442-01 connect to an external termination block?
No. Use the external-termination I/O and its approved cables when conductors land away from the rack.
Does 133442-01 make a 3500/50M an overspeed shutdown system?
No. The tachometer is not the dedicated overspeed detection system required for that protection function.
What sensor details are needed before ordering 133442-01?
Provide probe or pickup part numbers, polarity, slot, channel configuration, recorder wiring and terminal photographs.
What acceptance evidence belongs to 133442-01?
Record stable input signals, correct displayed speed, direction logic, alarm behavior and recorder-output checks.
