Woodward 8237-1597 DCS overspeed safety protection

• Brand
  Woodward
• Model
  8237-1597
• Product Name
  ProTech-GII Bulkhead Mount HV/HV Voted Relay Overspeed Protection Device
• Country of Origin
  United States
• HS Code
  8537209000
• Dimensions
  485mm×330mm×125mm
• Weight
  4.3 kg
• Operating Temperature
  -40 ℃ ~ +85 ℃
• Storage Temperature
  -45 ℃ ~ +90 ℃
• Power Supply
  24VDC
• Warranty
  12 month
• Product Status
  New and original

Woodward 8237-1597 Complete Product Specification
Product Advantages

1. Mature TMR triple modular redundant 2oo3 voting architecture, top-level SIL3 functional safety certification, the core safety equipment for turbine ESD systems;

2. Dual independent HV redundant power supply design, automatic seamless power switching, strong anti-power fluctuation capability without system outage;

3. Voted input and voted relay trip output structure, greatly improving anti-misoperation and anti-failure performance compared with independent relay models;

4. Built-in comprehensive continuous self-diagnosis function, real-time detection of sensor open circuit, short circuit and internal module faults, with fault log storage;

5. Fast overspeed trip response speed, effectively avoiding turbine rotor damage caused by over-speed operation;

6. IP56 sealed bulkhead enclosure, dustproof, waterproof and anti-corrosion, suitable for harsh turbine room and offshore environments;

7. Rich Modbus communication protocols, convenient for remote parameter configuration, real-time speed monitoring and fault data uploading;

8. Global Woodward professional after-sales service and long-term stable spare parts supply chain, recognized by major international power and energy projects.

Woodward 8237-1597 Standard Wiring & Connection Method

1. Redundant Power Supply Wiring

Two groups of independent HV power terminals are connected to two separate 100–150VDC stabilized DC power sources respectively to realize power redundancy;

Connect the equipment grounding terminal to the cabinet protective ground with grounding resistance ≤4Ω;

Use shielded high-voltage DC cables, power wiring must be separated from signal wiring.

2. MPU Speed Sensor Wiring

Connect passive magnetic pickup (MPU) probes to three groups of voted speed input terminals respectively;

Adopt dedicated shielded twisted-pair cables, single-point grounding of shielding layer only at the equipment end.

3. Voted Trip Relay Output Wiring

The three groups of voted trip relay contacts are connected in series to the turbine emergency trip valve control loop;

Do not arbitrarily add intermediate relays to avoid affecting trip reliability.

4. Discrete Interlock Input Wiring

Connect external permission signals, emergency stop signals and auxiliary interlock signals to voted digital input terminals;

All input signals adopt isolated wiring to prevent external interference.

5. Communication Wiring

RS485 Modbus RTU terminals connect to upper DCS system with shielded twisted-pair cables;

Ethernet port is used for high-speed data transmission and remote debugging.

6. Wiring Precautions

All wiring operations must be completed under full power-off status of the overspeed protection device;

High-current power cables and weak signal sensor cables must be routed separately;

After wiring, complete overspeed threshold and voting logic configuration via ProTech-GII dedicated software before commissioning.

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  Woodward 8237-1597 datasheet pdf
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