Woodward 8237-1603 Electronic Speed Controller

I. Basic Parameters

1. Input Power
   • Voltage Range: 20–30 VDC (typically 24 VDC)
   • Power Consumption: ≤15 W
2. Speed Measurement
   • Input Signal: Magnetic pickup or Hall effect sensor
   • Measurement Range: 0–10,000 RPM (configurable)
   • Accuracy: ±0.1% of setpoint (typical)
3. Output Control
   • Analog Output: 0–20 mA or 4–20 mA (configurable) for actuator control (e.g., fuel valve, intake valve)
   • Output Load: ≤500 Ω
4. Control Modes
   • Speed Control: Maintains constant rotational speed
   • Load Control: Adjusts output based on load changes
   • Remote Control: Supports external signal input (e.g., 4–20 mA remote setpoint)

II. Performance Characteristics

• Speed Regulation Range: 10–100% of rated speed
• Regulation Accuracy: ±0.25% of full scale
• Dynamic Response:
  • Speed step response time: ≤500 ms (to 95% of stable value)
  • Speed fluctuation during load step: ≤2% of setpoint
• Stability:
  • Steady-state speed volatility: ≤±0.05% over 24 hours
  • Temperature drift: ≤±0.02%/°C

III. Interfaces & Communication

• Analog Inputs
  • Remote setpoint: 4–20 mA (isolated)
  • Process variables: Pressure, temperature (optional)
• Digital Interfaces
  • Communication Protocol: Modbus RTU (RS-485)
  • Baud Rate: 9600/19200/38400 bps (configurable)
• I/O Terminals
  • Speed sensor input
  • Actuator output
  • Status feedback outputs (e.g., run/stop, alarm)

IV. Environmental Parameters

• Operating Temperature: −20°C to +70°C
• Storage Temperature: −40°C to +85°C
• Humidity: 5–95% RH (non-condensing)
• Protection Class: IP20 (standard); optional IP65 with protective enclosure
• Vibration Resistance: ≤5 g (10–2000 Hz)
• Shock Resistance: ≤10 g (11 ms)

V. Physical Specifications

• Dimensions: 177.8 mm × 127 mm × 76.2 mm (H×W×D)
• Weight: ~1.5 kg
• Mounting Method: Panel mount or DIN rail mount

VI. Application Fields

• Speed control for gas turbines and steam turbines
• Speed governing systems for diesel engines and generator sets
• Speed regulation for industrial pumps and compressors
• Power control for marine propulsion systems

VII. Certifications & Compliance

• CE certified
• UL/cUL listed
• RoHS compliant