Product Overview

• PN: 133396-01
• Brand: Bently Nevada
• Series: 3500 Machinery Protection System
• Type: Overspeed Detection I/O Module

• Function: It receives pulse signals from proximity probes or magnetic pickup sensors to monitor real-time rotating speed of large rotary equipment. It adopts redundant voting logic to execute rapid overspeed interlock protection and meets API safety specifications for turbine, compressor and generator safety control.

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Core Features

1. Supports 2-out-of-2 or 2-out-of-3 redundant voting configuration to eliminate single-point failure risks
2. Fast response speed ensures reliable overspeed emergency trip protection for critical units
3. Built-in sensor power supply and signal conditioning circuit, compatible with common speed measuring sensors
4. Hot-swappable rack installation with front panel LED indicators for status and fault diagnosis

5. Strictly complies with API 670 industry safety standards for mechanical protection

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Technical Specifications

• Input Signal: Proximity probe / magnetic pickup pulse signal
• Sensor Power: -24VDC, max 40mA
• Power Consumption: 8W
• Operating Temperature: -30℃ ~ +65℃
• Net Weight: 0.45kg
• HS Code: 8538900000
• Certifications: CE

• Product Status: Discontinued, supplied with tested surplus modules

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Compatibility

• Matched Device: Bently Nevada 3500 series rack
• Matching System: 3500 rack configuration software, System 1 monitoring platform

• Not Compatible: Non-Bently Nevada third-party monitoring racks

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Application

1. Redundant overspeed safety protection for steam turbines, gas turbines and centrifugal compressors in power and petrochemical industries
2. Prevent equipment damage caused by overspeed runaway faults of high-speed rotating units

3. Retrofit and spare replacement for old 3500 series machinery protection systems

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Our Advantage

• Completed speed signal calibration and redundant logic function test before delivery
• 12-month warranty provided for tested surplus modules