The Bently Nevada 3500/42M-01-00-00, also cataloged as the 3500/42M Proximitor Seismic Monitor, operates as a dedicated signal acquisition and monitoring component for proximity, velocity, and acceleration transducer inputs within the Bently Nevada 3500 Machinery Protection System.

Configuration Identification

The 3500/42M-01-00-00 configuration defines a Prox/Seismic I/O Module with internal terminations and no hazardous area approval option.

The module accepts up to four proximity, velocity, or acceleration transducer signals and processes dynamic machinery condition inputs through the 3500 rack architecture. The module provides sensor power supply and signal interface functions for vibration and position monitoring applications.

Hardware Specifications

Rotor Dynamics Signal Processing Characteristics

The 3500/42M module interfaces with Bently Nevada proximity and seismic transducers to acquire vibration and shaft position signals for machinery protection monitoring.

The module supports eddy-current probe signal input processing when connected with compatible Proximitor Sensors. Proper probe scaling and gap voltage validation are required during system commissioning to maintain accurate displacement measurements.

For rotor dynamics analysis, the module receives conditioned signals representing vibration amplitude and shaft movement. Channel configuration must match the connected transducer type to maintain correct engineering units and alarm calculations.

Ordering Information

The delivered configuration includes:

• 1 x Bently Nevada 3500/42M-01-00-00 Proximitor Seismic Monitor Module
• 1 x Prox/Seismic I/O Module assembly
• 1 x Internal termination I/O configuration

Required system components:

• 1 x Compatible Bently Nevada 3500 rack
• 1 x Compatible 3500 power supply module
• 1 x Compatible proximity or seismic transducer devices

Field Installation Guidelines

Module Installation

• Install the module into an available slot within a compatible Bently Nevada 3500 rack.
• Confirm rack backplane compatibility before module insertion.
• Verify module configuration matches connected transducer types.

Signal Wiring

• Separate low-level vibration signal wiring from high-current power cables.
• Maintain cable shielding and grounding practices for sensor signal integrity.
• Check terminal connections before system startup.

Transducer Configuration

• Verify proximity probe scaling parameters before operation.
• Confirm sensor gap voltage values where applicable.
• Validate channel settings for proximity, velocity, or acceleration inputs.

Frequently Asked Questions

• What signals can the 3500/42M-01-00-00 accept?

  The module accepts 1 to 4 proximity, velocity, or acceleration transducer signals through compatible Bently Nevada sensor interfaces.

• Does the module include internal terminations?

  Yes. The -01 configuration specifies a Prox/Seismic I/O Module with internal terminations.

• Can the module directly power proximity sensors?

  The module provides a -24 VDC transducer power supply interface for compatible monitoring applications.

• Is hazardous area approval included with this model?

  No. The 3500/42M-01-00-00 configuration does not include hazardous area approval options.

• Can this module measure vibration acceleration signals?

  Yes. When configured with compatible acceleration transducers, the module can acquire acceleration input signals.

• Does the module perform eddy-current probe scaling?

  The module interfaces with proximity measurement channels, while complete scaling depends on system configuration and connected sensor parameters.

• Is the 3500/42M hot-swappable?

  Module replacement procedures depend on the complete 3500 rack installation requirements and operating conditions.

• What grounding practice is recommended for sensor wiring?

  Shielded sensor cables should follow Bently Nevada installation guidelines with proper grounding to reduce electrical interference.