Description

The Bently Nevada 135305-01, also cataloged as the PWA 135305-01 Dual Vibration XY/Gap Monitor Module, operates as a dedicated hardware component for continuous processing of radial vibration and average shaft position metrics within 3300 Machinery Protection System platforms.

Hardware Specifications

Machinery Monitoring and TSI Characteristics

This internal motherboard assembly interfaces directly with external Proximitor circuits to capture live shaft orbits during high-velocity rotor dynamics assessment. Specifically, the processing pathways execute simultaneous data retrieval from orthogonal XY sensor configurations. Subsequently, the onboard circuitry utilizes these values to maintain precise eddy-current probe scaling metrics across the full measurement spectrum. Furthermore, targeted filtering loops maintain aggressive cross-talk suppression between close-set channels. Consequently, this processing architecture guarantees precise gap voltage validation targeting standard -10 VDC operational baselines, generating exact alarms if the average position limits drift out of window tolerances.

Frequently Asked Questions

Q: How does the 135305-01 module react if a short circuit occurs on a recorder output?

A: The board includes isolated analog recorder paths. Consequently, a short circuit condition on the recorder terminals has no impact on internal monitoring routines or alarm logic execution.

Q: What action does the monitoring logic perform during a sensor “Not OK” status validation?

A: The internal OK detecting circuit immediately identifies the out-of-bounds loop voltage. Subsequently, the module defeats the alarm relay drive for that specific channel and activates the front-panel indicator to prevent false system trips.

Field Installation Guidelines

First, slide the PWA module card into the assigned rack slot within the 3300 series chassis, ensuring complete backplane connector engagement before tightening the retention fasteners. Subsequently, verify that all external field cabling routes away from adjacent high-voltage switching sources. Specifically, this layout prevents heavy electromagnetic noise from corrupting the low-level proximity loop signals. Always terminate the raw sensor shields cleanly at the primary enclosure ground bar. Therefore, this dedicated path isolates common-mode electrical currents and preserves the integrity of the core gap voltage calculations.