136294-01 BENTLY

136294-01 Bently Nevada Digital Input Module

Brand：BENTLY NEVADA Model number：136294-01

Country of origin: U.S. Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

The 136294-01 is a Prox/Seismic I/O Module with Internal Terminations. It is installed in the rear of the 3500 rack, directly behind the 3500/42M monitor card. This module is responsible for providing the power required by the external Proximitor sensors and receiving the returned voltage signals that represent vibration, thrust position, or speed. The "Internal Terminations" designation means that the field wiring connects directly to screw terminals located on the module itself, rather than requiring an external terminal block or mass-termination cable.

Product Parameters

Compatibility: Exclusively designed for the Bently Nevada 3500/42M Proximitor Seismic Monitor.
Input Types: Supports Proximitor sensors, accelerometers, and velocity transducers.
Termination Style: Internal screw terminals for direct field wiring connection.
Channel Support: Provides connections for four independent channels of vibration or position input.
Signal Output: Routes signals to the monitor for processing and provides a buffered output for external diagnostic equipment.
Power Output: Delivers a stable $-24 \text{ VDC}$ to power the connected Proximitor sensors.
Operating Temperature: $-30\text{°C}$ to $65\text{°C}$ ( $-22\text{°F}$ to $149\text{°F}$ ).
Humidity: Up to 95% non-condensing.
Mounting: Rear-slot mounting in a standard 3500 series chassis.

Product Advantages

One of the primary advantages of the 136294-01 is its Simplified Installation. By using internal terminations, it eliminates the need for intermediate hardware, reducing the overall footprint and complexity of the cabinet wiring. The High Precision Signal Path ensures that low-level vibration signals are transmitted with minimal noise interference, which is vital for the early detection of machine failure.

Additionally, the module features Robust Buffered Outputs, allowing technicians to connect portable vibration analyzers to the front of the rack without interrupting the machine protection functions. The Industrial-Grade Reliability of the Bently Nevada hardware ensures that the monitoring system remains operational in high-temperature and high-vibration environments typical of power plants and refineries.

Important Considerations and Precautions

When installing the 136294-01, it is essential to follow Strict Wiring Polarity; reversing the wiring for a Proximitor sensor can lead to a "Not OK" status or permanent damage to the sensor. Proper Shielding and Grounding must be maintained; cable shields should be grounded at the monitor rack to prevent electromagnetic interference from skewing the vibration data.

Technicians should also ensure that the Terminal Screws are Torqued Correctly to prevent loose connections that could cause intermittent alarms. Because the 3500 system is a critical protection system, any maintenance on the I/O module should be performed while the associated monitor is in Bypass Mode to prevent accidental machine trips. Finally, always verify that the External Proximitor Type (e.g., $5 \text{ mm}$ , $8 \text{ mm}$ , or $25 \text{ mm}$ ) matches the configuration programmed in the 3500 Rack Configuration Software.

Product Applications

The 136294-01 is used in critical machinery monitoring across various heavy industries.

Power Generation: Monitoring the radial vibration and axial thrust of large steam and gas turbines to prevent catastrophic shaft failure.
Oil and Gas: Protecting centrifugal compressors and expanders in LNG facilities and refineries.
Water Treatment: Monitoring large vertical pumps and blowers for signs of bearing wear or misalignment.
Mining and Metals: Used on heavy-duty fans and conveyors to ensure continuous operation and worker safety.
Petrochemical: Implementing predictive maintenance on high-speed rotating equipment to avoid unplanned shutdowns.

3500/53-03-0 Bently Nevada

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