The Bently Nevada 3300/40-13-01-01-00-01 is a specialized rack-mounted Eccentricity Monitor module designed for the 3300 monitoring system. It is engineered to track shaft eccentricity and rotor bow in large rotating machinery, such as steam turbines and compressors, particularly during slow-roll startup and shutdown sequences. By processing inputs from proximity probe systems, this module provides continuous monitoring and alarm logic to support predictive maintenance and asset protection.

Features

• Dedicated eccentricity measurement for shaft bow and slow-roll displacement analysis.
• Continuous signal processing with real-time comparison against user-defined Alert and Danger setpoints.
• Integrated LED status indicators for OK, Bypass, Alert, and Danger conditions.
• Compatible with standard Bently Nevada proximity probe and Proximitor sensor configurations.
• Provides proportional output signals for external data logging and control systems.

Applications

This module is primarily utilized in critical industrial environments for the continuous monitoring of large rotating equipment. It is essential for detecting rotor misalignment or thermal bowing during machine transients, helping to prevent catastrophic failure by triggering alarms before operational limits are exceeded.

Technical Specifications

Installation Guidelines

• Ensure the 3300 rack is powered down before inserting or removing the module to prevent electrical damage.
• Verify that the module is fully seated in the rack slot and that the front panel screws are tightened to ensure proper grounding.
• Use shielded cabling for all transducer inputs to minimize electromagnetic interference (EMI) in high-noise industrial environments.
• Maintain adequate airflow around the 3300 rack to ensure the module operates within its specified temperature range.
• Confirm that all jumper settings and configuration switches match the specific requirements of the machine train before commissioning.

FAQ

What is the primary function of the 3300/40 module?
The 3300/40 is designed to measure peak-to-peak eccentricity, which is the amount of shaft bow, primarily during slow-roll conditions when the machine is rotating at low speeds.

Does this module require external power?
The module receives power directly from the 3300 rack backplane once installed.

What do the LED indicators on the front panel represent?
The LEDs provide visual status for the OK (transducer health), Bypass (maintenance mode), Alert, and Danger alarm states.