製品紹介
The Woodward 9907-345 is a high-performance overspeed protection system designed specifically for critical rotating machinery such as steam turbines, gas turbines, and industrial engines. This model belongs to the ProTech-GII Series, known for its reliability, safety compliance, and fast reaction times.
The system functions as a triple-redundant (2-out-/-3 voting) speed monitoring and protection 台, ensuring immediate shutdown / machinery in case / detected overspeed events. It is primarily used in safety-critical operations, where a failure in speed control could lead to severe mechanical damage or endanger human lives.
Built with robust hardware and advanced s/tware algorithms, the 9907-345 is certified for use in hazardous and SIL-rated environments. The 台 features three isolated speed-sensing channels, redundant power supplies, configurable trip parameters, and programmable relays for safe, deterministic response to over-speed conditions.
製品仕様
| Parameter | Value |
|---|---|
| モデル Number | Woodward 9907-345 |
| Series | ProTech-GII |
| Overspeed Trip Mechanism | 2-out-/-3 Voting Logic |
| Input Power Supply | 18–32 VDC (Dual Redundant Inputs) |
| Speed Input Channels | 3 (Isolated, Magnetic/MPU Compatible) |
| Operating Temperature Range | -40°C to +70°C |
| Hazardous Area Certifications | Class I, Div 2; ATEX Zone 2 |
| Safety Certifications | SIL 3 (IEC 61508) |
| Communication Interface | Modbus RTU (RS-485) |
| Display | Front LCD with Diagnostic LEDs |
| Enclosure Protection | NEMA 4X / IP66 Front Panel |
| Mounting Type | Panel Mount |
| Configuration | Via Front Panel or Remote Upload (USB) |
| Response Time | < 40 milliseconds |
| Dimensions (H × W × D) | 482.6 x 311 x 143 mm |
| 重量 | 4.13 kg |
Product Applications
The 9907-345 Overspeed Protection System is ideally suited for use in environments that demand high reliability and quick response to overspeed events. Some typical applications include:
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Steam turbines in power generation plants
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Gas turbines in oil & gas compression stations
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Reciprocating engines in marine propulsion systems
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Compressor trains and turbo expanders
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Standby generators in hospitals and data centers
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Process-critical rotating equipment in chemical and refining industries
Product Advantages
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Triple Redundancy: The 2-out-/-3 voting architecture ensures higher integrity and fault tolerance, reducing false trips.
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SIL 3 Certified: Designed and certified for Safety Instrumented Systems (SIS) in compliance with IEC 61508.
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Fast Response: Acts in under 40 ms upon detecting overspeed, preventing damage to machinery.
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Flexible Configuration: Allows field programmability via onboard display or USB-based upload.
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Industrial-Grade Design: Operates in extreme conditions and harsh industrial environments.
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Redundant Power Inputs: Dual power inputs ensure continuous operation during primary power failure.
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Diagnostics and Alerts: Built-in LED diagnostics and Modbus communication for real-time monitoring.
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Secure Operation: Password-protected settings and event logging for system integrity and auditing.
よくある質問 (FAQ)
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What type / turbines is the Woodward 9907-345 suitable for?
It is designed for both steam and gas turbines, as well as industrial engines requiring precise overspeed protection. -
What is the power supply requirement?
The system operates on 18–32 VDC with dual redundant inputs for enhanced reliability. -
Does it support digital communication?
Yes, it supports Modbus RTU via an RS-485 interface. -
What is the trip mechanism used?
It uses a 2-out-/-3 voting mechanism based on three speed channels to determine a valid overspeed trip. -
Can I configure the 台 in the field?
Yes, it can be configured using the front panel interface or via a USB upload. -
Is this model certified for safety applications?
Yes, it is SIL 3 certified under IEC 61508 for use in Safety Instrumented Systems. -
What is the typical response time?
The system reacts to overspeed conditions in less than 40 milliseconds. -
Is the front panel weatherpro/?
Yes, it has a NEMA 4X / IP66-rated front panel, suitable for outdoor and washdown environments. -
What is the operating temperature range?
The 台 operates reliably from -40°C to +70°C. -
What happens if one speed sensor fails?
The system continues to operate using the remaining two channels, and diagnostics will alert the operator / the failure.
Related モデルs in the Same Series
| モデル | 説明 | Key Features |
|---|---|---|
| 9907-167 | ProTech Overspeed Trip System | Single-relay output, cost-effective |
| 9907-838 | ProTech-GII Overspeed Protection | Hazardous area certified, SIL 3 |
| 9907-210 | ProTech Classic Speed Monitor | Basic speed protection, no Modbus |
| 9907-250 | ProTech Trip Block System | Trip valve interface system |
| 8237-1241 | MPU Speed Sensor for ProTech | Compatible speed sensor input |
| 2301A-GE | Load Sharing & Speed Control | Works in tandem with ProTech systems |
Popular Woodward モデルs
| モデル | Function | Application |
|---|---|---|
| 2301D Digital | Digital Load Sharing & Speed Control | Engine and turbine control |
| 505XT | Steam Turbine Controller | Extraction/Admission turbine systems |
| 723PLUS | Engine Management System | Diesel & gas engines |
| 2301E | Load Sharing Controller | Generator sets and process controls |
| Atlas II | Programmable Turbine Control Platform | Large frame turbine automation |
| easYgen-3500 | Generator Control & Synchronization | Multi-generator synchronization |
会社情報
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