3701/55 323174-01 Bently Nevada | Emergency Shutdown Monitor
Manufacturer: Bently Nevada
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Part Number: 3701/55 323174-01
Condition：New with Original Package
Product Type: Emergency Shutdown Monitor
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Bently Nevada 3701/55 323174-01 is a high-integrity Emergency Shutdown Device (ESD) designed to protect critical rotating machinery including steam turbines, gas turbines, hydro turbines, and expanders. Part of the ADAPT platform, it features triple modular redundancy (TMR) for maximum reliability.
This module monitors speed and process variables continuously, triggering shutdowns during overspeed or unsafe conditions. It is SIL-rated for safety-critical applications and integrates with Bently Nevada’s condition monitoring and protection systems.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Bently Nevada |
| Model | 3701/55 323174-01 |
| Function | Emergency Shutdown Device (ESD) with overspeed protection |
| Architecture | Triple Modular Redundancy (TMR) |
| Speed Inputs | 6 total (2 per CPU module) |
| Discrete Inputs | 32 total; 12 configurable as 4–20 mA analog or discrete |
| Relay Outputs | 5 per module; 4 for logic annunciation, 1 for OK/NOT OK status |
| Voting Logic | Configurable: 1oo1, 2oo3, etc. |
| Input Frequency Range | 3 Hz to 20 kHz |
| Speed Range | Up to 120,000 RPM |
| Signal Amplitude | Minimum 1 V peak-to-peak for proximity transducer input |
| Operating Temperature | –30°C to +65°C |
| Enclosure | Rugged industrial-grade housing |
| Software Interface | Graphical configuration via Bently Nevada Monitor Configuration software |
| Compliance | Suitable for hazardous area installations (local standards apply) |
| Weight | 300 g |
| Applications | Turbine overspeed protection, machinery trip logic, safety shutdown |
FAQ
Q1: What type of machinery is the 3701/55 323174-01 suitable for?
A1: It protects steam, gas, and hydro turbines, as well as expanders, and other rotating machinery.
Q2: How many speed inputs does this module support?
A2: The module supports 6 speed inputs (2 per CPU module) for precise overspeed detection.
Q3: Can it integrate with PLC or DCS systems?
A3: Yes, it supports relay outputs and voting logic for seamless integration.
Q4: What is the operating temperature range?
A4: The module operates reliably from –30°C to +65°C in industrial environments.
Q5: What safety standards does it comply with?
A5: It is SIL-rated and suitable for hazardous area installations based on local standards.