Bently Nevada 3500/42M-01-00 128229-01 Proximitor Seismic Monitor I/O Module

The Bently Nevada 3500/42M‑01‑00 I/O Module (part number 128229‑01) is a specialized interface module designed to complement the 3500/42M‑01‑00 Proximitor/Seismic Monitor in the Bently Nevada 3500 Machinery Protection System. As an essential link between sensor modules and the backplane, this I/O unit manages connection, power distribution, and signal routing for proximity probes, accelerometers, velocity sensors, and optional 4–20 mA outputs.

Installed in the 3500 rack, the 128229‑01 enables each channel of its paired Proximitor/Seismic Monitor (the 3500/42M) to perform real-time tracking of shaft vibration, radial shaft position, casing vibration, and more. By supporting up to four channels of input and providing diagnostic feedback directly to the system, this I/O module significantly increases system reliability and simplifies field maintenance.

Product Specifications

Product Applications

The 128229‑01 I/O module is deployed in industries that demand advanced condition monitoring and protection for rotating machinery:

• Gas and Steam Turbines – Monitoring radial displacement, axial thrust, & casing vibration

• Centrifugal and Reciprocating Compressors – Detecting rod drop, frame resonance, or rotor instability

• Large-Scale Pumps and Motors – Tracking journal eccentricity, shaft misalignment, and structural vibration

• Gearboxes and Industrial Drives – Ensuring vibration stays within safe limits, protecting gearing systems

• Power Generation & Petrochemical Plants – Enabling early fault detection and machine interlocks

• Mining and Heavy Industry – Withstanding rough environments while protecting high-value assets

The module enhances machinery protection by delivering accurate, continuously monitored inputs to the central 3500 system.

Product Advantages

• Reliable Signal Interface

  Provides robust connections for various sensor types, with internal buffering and fault detection.

• Comprehensive Diagnostics

  Reports sensor health, wiring faults, signal loss, and misconfiguration via the 3500 system display.

• Modular & Hot-Swappable

  Facilitates field replacement without interrupting power or system operation—critical for continuous processes.

• Simplified Wiring

  Centralizes sensor connections in a single rack-mounted module to streamline installation and maintenance.

• Flexible Signal Outputs

  Each channel can carry dynamic instrumentation output and an optional 4–20 mA analog signal for control systems.

• Optimized Power Usage

  Low power consumption reduces rack heat, enhancing module longevity and reliability.

• Seamless Integration

  Designed to work with other 3500 modules, including dual‑channel relay modules and data interfaces.

• Rigorous Quality & Certification

  Adheres to CE, CSA, ATEX, and IECEx standards, ensuring safe operation in critical industrial environments.

Frequently Asked Questions (FAQ)

1. What is the function of part number 128229‑01?

It’s the I/O interface that supports the 3500/42M monitor by routing sensor signals from the rack backplane.

2. How many sensor channels does it support?

The I/O module supports up to four independent sensor channels.

3. Can it drive analog 4–20 mA outputs?

Yes, each channel can optionally provide proportional 4–20 mA output alongside buffered dynamic signal.

4. Does it provide diagnostic feedback?

Yes. It delivers diagnostic flags—such as sensor ok/not ok, signal dropout—to the 3500 system.

5. Is hot-swappable functionality available?

Yes. It can be swapped with the rack powered, preserving system uptime.

6. Which sensors are compatible with this module?

Compatible with proximity probes (3300 XL, 7200), velocity sensors, and standard accelerometers.

7. How is the module configured?

Using the 3500 Configuration Software via the 3500/22M TDI interface without physical access.

8. Where is this module installed?

In the same rack slot as its paired 3500/42M monitor, acting as its sensor interface block.

9. What power supply is required?

It draws less than 5 W and is powered directly from the 3500 rack power system.

10. What happens if wiring is disconnected or a sensor fails?

The module flags a “not ok” condition via the 3500/22M diagnostics and can be configured to alarm or trip.