Bently Nevada 72254-02 | 3300/10 Interface Card Module

Bently Nevada 72254-02 Interface Card

The Bently Nevada 72254-02 is a critical interface module for the 3300/10 monitoring system, providing signal conditioning and relay output capabilities for machinery protection applications.

🔌 Technical Overview

Part Number: 72254-02
System Series: 3300/10 Machinery Protection System
Module Type: Interface Card with Relay Outputs
Input Channels: Dual-channel monitoring capability
Relay Outputs: Form C (SPDT) contacts
Contact Rating: 5A @ 250VAC / 30VDC
Power Supply: 24 VDC nominal
Operating Temperature: 0°C to +60°C (32°F to +140°F)
Mounting: Standard rack-mount configuration
Compliance: API 670, CE marked

🛡️ Protection Functions

Trip Logic Processing: Converts analog sensor signals into discrete alarm and trip outputs for emergency shutdown systems, providing the critical link between monitoring and protection.

Dual-Channel Redundancy: Monitors two independent sensor inputs simultaneously, enabling voting logic configurations that eliminate false trips while maintaining genuine protection capability.

Relay Interface: Hardwired relay contacts integrate directly with plant DCS, PLC, and ESD systems without requiring additional signal converters or isolation devices.

⚡ Real-World Applications

Turbine Protection Systems: Interface between vibration monitors and turbine trip systems in power generation facilities, where millisecond response times prevent catastrophic blade failures.

Compressor Shutdown Logic: Provide fail-safe trip signals for high-value compressor trains in petrochemical plants, protecting assets worth millions while maintaining production uptime.

Pump Monitoring Networks: Connect multiple pump monitoring points to centralized control systems, enabling operators to track fleet health from a single interface.

✅ Key Advantages

• Proven Reliability: Field-tested across thousands of installations worldwide
• Hot-Swappable Design: Replace modules without system shutdown
• LED Diagnostics: Visual status indicators for power, OK, and alarm conditions
• Flexible Configuration: Adjustable setpoints and time delays via front-panel controls
• Isolated Outputs: Relay contacts electrically isolated from monitoring circuits
• Compact Footprint: Maximizes rack density in control room installations

🔧 System Architecture

The 72254-02 accepts inputs from Bently Nevada proximitors, accelerometers, or other 4-20mA sensors. Internal comparators evaluate signals against user-defined alarm and danger setpoints, activating relay outputs when thresholds are exceeded. Time delays and voting logic prevent nuisance trips from transient conditions.

Multiple interface cards can be installed in a single rack, creating comprehensive machinery protection systems that monitor vibration, temperature, pressure, and position across entire process trains.

📊 Configuration Flexibility

Front-panel DIP switches and potentiometers enable field configuration without specialized tools or software. Set alarm levels, adjust time delays, and select voting modes to match your specific application requirements. Changes take effect immediately without requiring system restarts.

📦 Package Contents

One Bently Nevada 72254-02 interface card module, rack mounting hardware, terminal block connectors, configuration guide, and technical documentation. All components are factory-tested and ready for installation.

Product Condition: Brand new, factory-sealed with full manufacturer warranty and technical support.