Product Overview

The Bently Nevada 82926-01 is a specialized Input/Output (I/O) and Record Terminals Relay Module developed for the 3300 Machinery Protection System. This module acts as the physical interface between the monitoring rack's backplane and the external plant environment. It is designed to facilitate the secure termination of transducer signals (XDCR) and the distribution of recorder outputs to peripheral devices such as PLCs, DCS, or strip chart recorders. By providing dedicated terminal points for signal input and alarm relay outputs, the 82926-01 ensures high-integrity data transfer and reliable hardware-based machinery protection logic.

Key Technical Characteristics and Hardware Specifications

The 82926-01 is built to industrial standards, ensuring that low-voltage sensor signals are protected from electromagnetic interference and mechanical stress.

• Model Number 82926-01

• Module Type I/O Record Terminals Relay Module (XDCR I/O)

• System Compatibility Bently Nevada 3300 Series Monitoring Racks

• Wiring Interface Precision screw terminals for Transducer (XDCR) inputs and Recorder outputs

• Relay Functionality Integrated dry-contact relays for Alert and Danger alarm annunciation

• Signal Support Proportional 4-20 mA or 1-5 Vdc recorder output signals

• Environmental Resistance Engineered for operation in high-vibration and high-humidity industrial cabinets

• Mounting Installs in the rear of the 3300 rack chassis, directly behind the main monitor module

• Weight 0.35 kg

• Dimensions 5.1 x 10.2 x 22.9 cm

Industrial Applications and Operational Use Cases

This I/O module is a staple for facility engineers managing legacy 3300 systems in critical power and process sectors.

• Transducer Signal Routing Providing a centralized and organized termination point for proximity probes, seismic sensors, and accelerometers monitoring large turbines and compressors.

• DCS/PLC Data Integration Supplying continuous analog signals (4-20 mA) to plant-wide control systems for real-time vibration and position trending.

• Machinery Protection Interlocks Utilizing the onboard alarm relays to trigger automated machinery trip circuits or emergency shutdown systems (ESD).

• Remote Diagnostic Acquisition Offering buffered outputs or terminal access for portable vibration analyzers without interrupting the primary protection loop.

• Refinery and Power Plant Maintenance Serving as a ruggedized replacement part for existing 3300 rack infrastructures, ensuring long-term asset lifecycle support in hazardous or high-temperature environments.

The modular design of the 82926-01 allows for rapid field replacement and simplified troubleshooting, making it an essential component for maintaining the operational uptime of high-value rotating equipment.