Bently Nevada 84152-01 Quad Alarm Relay & Signal I/O Module

Product Description

Bently Nevada 84152‑01 is a high-reliability signal input and quad alarm relay module, designed for industrial machinery protection and monitoring systems. This module acts as a robust interface for sensor signals, providing signal conditioning and four independent alarm outputs for system protection and emergency shutdown logic.

The module supports two independent measurement channels, handling both radial vibration and shaft position signals. Its four isolated relays allow direct integration with alarm or trip logic, ensuring fast and reliable response in critical applications.

A conformal-coated version ensures operation in harsh industrial environments, and the module interfaces seamlessly with DCS/PLC systems for remote monitoring, data acquisition, and supervisory control.

Key Features

• Four independent alarm relays for alert and trip logic

• Two measurement channels: radial vibration and shaft position

• Signal inputs compatible with proximity probes and vibration sensors

• Signal conditioning and record terminals for diagnostics

• Outputs routed to monitoring modules or data acquisition systems

• Conformal-coated for high-humidity, dusty, or high-vibration environments

• Supports machinery protection, emergency shutdown, and system interlocks

• Engineered for industrial-grade reliability

Technical Specifications

General Parameters

Functional Specifications

• Accepts two independent proximity probe channels (vibration + average shaft position)

• Provides four independent relay outputs for alarm or trip logic

• Routes conditioned signals to monitoring modules or recorders

• Interfaces with DCS/PLC systems for supervisory control

• Supports machinery protection, emergency shutdown, and system interlocks

Applications

• Steam and gas turbine monitoring

• Centrifugal compressors and pump stations

• Generators and large rotating equipment protection

• Machinery protection system signal interface and alarm integration

FAQ

Q: How many sensor channels does the module support?
A: It supports two independent channels, measuring both radial vibration and shaft position.

Q: Can the relay outputs be used directly for shutdown logic?
A: Yes, the four independent relays can directly trigger alarms or shutdown events.

Q: Is it suitable for harsh environments?
A: Yes, the conformal-coated version ensures reliable operation in high humidity, dust, and high vibration conditions.

Q: Can it integrate with PLC or DCS systems?
A: Absolutely, it functions as a full-featured I/O interface for industrial automation and monitoring systems.

Q: How does it differ from model 84151‑01?
A: 84152‑01 provides four independent relays, whereas 84151‑01 typically supports only two, offering more comprehensive alarm capability.