The Bently Nevada 14386-03, also cataloged as the 14386-03 Proximitor Signal Conditioning I/O Module, operates as a dedicated hardware component for connecting and conditioning signals from eddy-current proximity probes within Bently Nevada 3500 Series machinery protection systems.

Hardware Configuration & Eddy-Current Proximity Measurement

The 14386-03 module provides signal conditioning interfaces for eddy-current proximity transducers, scaling raw probe gap voltage signals to a fixed output of 200 mV/mil. It links directly with companion monitor modules such as the 3500/42M Proximitor/Seismic Monitor, routing shaft vibration and position data across the 3500 rack backplane for machinery health supervision.

Hardware Specifications

Signal Conditioning and Machinery Protection Interfaces

Designed for integration into Bently Nevada 3500 rack architectures, the module processes high-frequency gap voltage signals and validates -10 VDC target offsets from proximity probes. It maintains channel isolation across monitor inputs, suppressing electrical cross-talk and ensuring stable vibration signal conditioning for critical turbomachinery protection and rotor dynamics monitoring.

Installation and Electrical Integration

• Backplane Power Interruption: De-energize rack power before inserting or extracting the 14386-03 I/O module from the 3500 chassis backplane.
• Signal Wiring & Shielding: Terminate signal wiring from proximity probes using dedicated shielded coaxial cables to preserve gap voltage accuracy and prevent noise pickup.
• Grounding Protocols: Ensure cable shields are grounded at the designated barrier or rack ground terminals to eliminate ground loops in vibration monitoring circuits.
• Slot Alignment: Align module circuit board edges carefully with chassis card guides to prevent damage to backplane connector pins.

Frequently Asked Questions

• Q: What monitor module is compatible with the 14386-03 I/O module?

  A: The module is designed to work directly with Bently Nevada 3500 Series monitor modules such as the 3500/42M Proximitor/Seismic Monitor.

• Q: What is the fixed sensitivity scaling of this proximitor module?

  A: The module provides a fixed output sensitivity scaling of 200 mV/mil for connected eddy-current proximity probes.

• Q: What power supply voltage does the 14386-03 require?

  A: The module operates on a nominal 24 VDC supply provided through the 3500 rack power distribution architecture.

• Q: Can the module be inserted or removed while the 3500 rack is powered?

  A: Power to the rack should be turned off prior to module installation or removal to protect sensitive internal circuitry and backplane bus connectors.

• Q: What type of sensors connect to the 14386-03 inputs?

  A: The module connects to eddy-current proximity probes and transducer systems used for radial vibration, axial position, and speed measurements.

• Q: What is the physical weight of the 14386-03 module?

  A: The module weighs approximately 0.23 kg (0.50 lbs).

• Q: How does the module handle high-frequency electrical interference?

  A: It utilizes shielded signal paths and internal filtering to suppress noise and maintain gap voltage signal integrity across monitoring channels.

• Q: Is the 14386-03 currently in active manufacturing production?

  A: No, this model has been designated as discontinued by the manufacturer.