Description
Woodward 8237-1246 ProTech-GII Speed Detection System
The Woodward 8237-1246 is a high-reliability safety module designed for critical rotating equipment, particularly steam turbines and generators in energy, manufacturing, and industrial sectors. As part of Woodward’s ProTech-GII series, this module provides advanced overspeed detection and protection, ensuring rapid shutdown to prevent catastrophic failures. It features dual redundant tripping relay outputs with a 2-out-of-3 voted architecture, enhancing safety by minimizing false trips. The 8237-1246 supports integration with turbine control systems and DCS platforms, offering real-time speed monitoring and fault diagnostics. Its rugged design and conformal coating protect against harsh environments, including sulfur contamination, making it suitable for offshore, petrochemical, and power plant applications.
| Parameter |
Specification |
| Input Voltage |
24 VDC ±10% |
| Current Consumption |
≤1.5 A |
| Speed Sensor Inputs |
3 channels (MPU/proximity switches) |
| Trip Relays |
2 dual redundant (5 A at 28 VDC) |
| Communication |
Modbus RTU (optional) |
| Operating Temperature |
-40°C to +70°C (-40°F to +158°F) |
| Safety Compliance |
IEC 61508 SIL 2, ISO 13849 PL d |
| Dimensions |
200 × 150 × 80 mm (7.87 × 5.91 × 3.15 in) |
- Dual Redundancy: 2-out-of-3 voting ensures fail-safe operation.
- Acceleration Detection: Optional feature to detect rapid speed increases.
- On-Line Testing: Supports manual or automatic overspeed tests without system shutdown.
- Sulfur-Resistant Design: Conformal coating protects against corrosive gases (IEC 721-3-3 Class 3C2).
- Modbus Integration: Enables seamless communication with plant control systems.
- Power Generation: Protects steam turbines in coal, gas, and nuclear power plants.
- Oil & Gas: Monitors compressors and pumps in offshore platforms.
- Industrial Machinery: Ensures safe operation of high-speed rotating equipment.
Case Study:
A European power plant reduced turbine downtime by 25% using the 8237-1246, which detected and mitigated a potential overspeed event during grid instability.
- Higher Redundancy: Dual redundant outputs compared to single-channel alternatives.
- Corrosion Resistance: Sulfur-resistant coating outperforms standard modules in harsh environments.
- Flexible Configuration: Supports both voted and non-voted trip relay setups.
- Safety Requirements: Ideal for SIL 2-rated systems requiring redundant protection.
- System Compatibility: Ensure compatibility with existing ProTech-GII modules for retrofitting.
- Environmental Conditions: Opt for sulfur-resistant models in petrochemical or marine settings.
- Sensor Calibration: Regularly verify speed sensor inputs for accuracy.
- Software Updates: Apply Woodward’s latest firmware to maintain safety compliance.
- Installation: Follow IP65-rated enclosure guidelines in dusty or wet environments.
- Trip Testing: Perform periodic on-line tests to validate relay functionality.
声明山西鑫业达国际贸易有限公司 is your trusted partner for
Woodward 8237-1246 and automation solutions. Visit
www.xydcontrol.com or contact us for sales and technical support.
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