Product Overview

The Bently Nevada 3500/32 (125720-02) 4-Channel Relay Module is a compact relay output module designed for the Bently Nevada 3500 machinery protection system.

It provides four independent relay output channels used to trigger alarms, trips, and control signals, while offering a reduced depth design for installations where rack space is limited.

Technical Specifications

Function and Working Principle

The Bently Nevada 3500/32 (125720-02) 4-Channel Relay Module converts monitoring system signals into relay outputs.

Working Principle:

• Receives alarm or status signals from monitoring modules
• Evaluates system conditions (faults, thresholds, alerts)
• Activates corresponding relay outputs
• Sends signals to external systems such as PLCs, alarms, or shutdown devices

Core Functions:

• 4 relay output channels
• Alarm and trip signal output
• External device control interface
• Integration with protection systems

Role in Industrial Control Systems

This module is essential for:

• Converting monitoring data into physical control signals
• Triggering alarm and shutdown actions
• Interfacing with PLC/DCS and safety systems
• Supporting fast and reliable protection responses

It plays a key role in machinery safety and automation.

Industrial Applications

The Bently Nevada 3500/32 (125720-02) 4-Channel Relay Module is widely used in:

• Turbine protection systems
• Compressor and pump monitoring
• Power generation plants
• Oil and gas facilities
• Petrochemical industries
• Industrial automation systems

It is especially suitable for applications requiring compact installation and reliable relay output.

Installation and System Integration

For proper operation:

• Installed in a Bently Nevada 3500 rack system
• Connected to monitoring modules
• Relay outputs wired to external control systems
• Configured via system software

Correct installation ensures stable and accurate relay operation.

Compatible System Components

Works with:

• Vibration monitoring modules
• Keyphasor modules
• Rack Interface Modules (RIM)
• Transient Data Interface (TDI) modules
• Other 3500 system modules

It serves as the output interface for protection and control logic.

Key Advantages

• Compact design (reduced depth)
• Four independent relay outputs
• Reliable alarm and shutdown signaling
• Easy integration with control systems
• Industrial-grade durability
• Suitable for space-limited installations

Technical FAQs

What is the main function of this module?
It outputs relay signals for alarms, trips, and control actions.

What is the difference from 125720-01?
The 125720-02 has a more compact depth (99.1 mm), making it ideal for tight rack spaces.

Where is it used?
In industrial protection systems requiring relay-based control outputs.

Conclusion

The Bently Nevada 3500/32 (125720-02) 4-Channel Relay Module is a compact and reliable relay output solution.

It provides:

• Stable 4-channel relay outputs
• Fast response for alarms and shutdowns
• Space-saving design
• Seamless integration with 3500 systems

This makes it an excellent choice for efficient and reliable machinery protection applications, especially where space is limited.