135489-02 | Bently Nevada | Machinery Monitor I/O Module

The Bently Nevada 135489-02 is a monitor I/O module designed for use with the 3500/42M Machinery Protection Monitor. It provides the rear wiring interface for a specific four-channel transducer arrangement, supporting two Proximitor/Accelerometer channels and two Velomitor channels. Furthermore, its internal barriers and termination configuration define the sensor connection arrangement for the monitoring system.

Key Features

• Four-channel configuration: Supports two Proximitor/Accelerometer channels and two Velomitor channels.
• Built-in intrinsic safety barriers: Provides internal barriers for the specified transducer arrangement.
• Integrated terminations: Combines the barrier and termination functions within the I/O assembly.
• Rear full-height installation: Occupies the rear full-height I/O position of the 3500 rack.
• Channel-specific allocation: Assigns Proximitor/Accelerometer inputs to channels 1 and 2, and Velomitor inputs to channels 3 and 4.

Technical Specifications

Transducer Configuration and Signal Connections

The 135489-02 supports a defined combination of transducer inputs rather than a general-purpose four-channel interface. Channels 1 and 2 accommodate Proximitor/Accelerometer inputs, while channels 3 and 4 accommodate Velomitor inputs. Therefore, the sensor types and channel assignments must match the installed I/O assembly.

Furthermore, the internal barrier and termination arrangement determines how field transducer wiring connects to the monitor. For replacement purposes, verify the complete part number and existing rear wiring configuration before selecting this module.

Installation and Compatibility Considerations

The 135489-02 occupies the rear full-height I/O position associated with the 3500/42M monitoring arrangement. It serves as the interface between the field transducers and the main monitor rather than functioning as an independent monitoring instrument.

In addition, the built-in barriers form part of the field connection arrangement. Confirm the installed monitor, transducer types, channel assignments and termination requirements before installation or replacement. Other 3500/42M I/O assemblies may use different barrier and connection configurations.

Frequently Asked Questions

Q: Is the Bently Nevada 135489-02 a standalone four-channel monitor?

A: No. It is a monitor I/O module that provides the transducer wiring interface for a compatible 3500/42M main monitor. The main monitor performs the monitoring functions.

Q: Which transducers does the 135489-02 support?

A: Its specified configuration supports two Proximitor/Accelerometer channels and two Velomitor channels. Channels 1-2 serve the Proximitor/Accelerometer inputs, while channels 3-4 serve the Velomitor inputs.

Q: Does the 135489-02 include internal barriers?

A: Yes. This version includes internal intrinsic safety barriers and terminations. Verify the existing field wiring and barrier requirements before replacing another 3500/42M I/O assembly with this model.