Configured for proximity transducer signal acquisition and displacement monitoring in Bently Nevada 3500 System platforms, the Bently Nevada 3500/40 125672-01 (3500/40 Proximitor I/O Module) provides direct physical/electrical execution for processing eddy-current probe signals and generating alarm monitoring data.

Model Identification

The Bently Nevada 3500/40 125672-01 Proximitor I/O Module with Internal Terminations is a four-channel input/output interface module designed for proximity transducer monitoring applications.

The module accepts proximity probe signals, provides probe excitation, processes dynamic and static measurement values, and supports dual-level alarm functions with Alert and Danger thresholds. The unit is configured for installation within the Bently Nevada 3500 System rack architecture.

Hardware Specifications

Eddy-Current Probe Signal Processing

The 3500/40 module performs proximity transducer signal conditioning for shaft displacement and position measurement applications. The input circuit provides -24 VDC probe excitation and processes the resulting eddy-current probe feedback signal.

Gap voltage validation is required during commissioning to confirm correct probe operating position. Typical proximity probe systems use gap voltage measurements as a reference point for confirming probe installation and signal scaling.

The module supports rotor dynamics monitoring by processing both dynamic vibration components and static shaft position values. Internal signal handling reduces measurement errors caused by incorrect scaling, wiring interference, or improper probe alignment.

Ordering Information

• 1 x Bently Nevada 3500/40 125672-01 Proximitor I/O Module
• 1 x Internal termination assembly
• 1 x Factory-configured module hardware
• 1 x Product identification label
• 1 x Technical documentation package when supplied

Installation and Wiring Guidelines

Rack Installation

• Install the module into a compatible Bently Nevada 3500 System rack slot.
• Confirm rack power status before module insertion or removal.
• Verify module position matches the configured monitoring channel assignment.

Probe Connection

• Use shielded cable for proximity transducer signal wiring.
• Maintain separation between probe cables and high-voltage or high-current conductors.
• Verify probe polarity and connection points before system startup.

Signal Verification

• Check probe gap voltage before enabling monitoring functions.
• Confirm dynamic and static measurement values correspond with expected machine conditions.
• Verify Alert and Danger alarm settings within the monitoring configuration.

Frequently Asked Questions

• What is the main function of the 3500/40 125672-01 module?

  The module receives proximity transducer signals and processes displacement measurements for Bently Nevada 3500 System monitoring.

• How many channels does this module support?

  The 3500/40 125672-01 provides four independent monitoring channels.

• What type of sensors can be connected?

  The module accepts input from compatible eddy-current proximity transducers.

• What probe excitation voltage is provided?

  The module provides -24 VDC excitation for supported proximity probe systems.

• What measurement values are supported?

  The module supports dynamic measurements, static measurements, and configurable static value parameters.

• What is the frequency response range?

  The specified frequency response is from 0 to 10 kHz for monitored displacement signals.

• What alarm functions are available?

  The module supports dual-level alarm functions with Alert and Danger thresholds.

• What should be checked before operation?

  Verify probe wiring, gap voltage, signal scaling, and alarm configuration before commissioning.