General Information
Manufacturer: Woodward

Part Number: 8237-1481

Type: Control Module / I/O Expansion Card

Compatibility: Designed for Woodward 2301/ProAct systems

Primary Application: Turbine/engine speed control & monitoring

Electrical Parameters
Power Supply:

Voltage: 24V DC ±10%

Current Draw: ≤10W (typical)

Inputs:

Analog: 4 channels (4-20mA/0-10V configurable)

Digital: 6 channels (24V DC wet contact)

Speed Sensor: 2× magnetic pickups (50–5000 Hz)

Outputs:

Analog: 2 channels (4-20mA, isolated)

Relay: 4× Form C (5A @ 30V DC)

Performance & Control
Control Modes:

Isochronous/Droop

PID with adaptive tuning

Load sharing (parallel operation)

Speed Range: 50–5000 RPM

Accuracy: ±0.25% of setpoint

Response Time: <100ms (10% step change)

Environmental & Mechanical
Operating Temp: -40°C to +85°C (-40°F to +185°F)

Humidity: 5–95% non-condensing

Vibration: 5g (10–2000 Hz)

Enclosure: IP20 (NEMA 1 equivalent)

Dimensions: 120 × 80 × 25 mm (4.7 × 3.1 × 1.0 in)

Weight: 0.4 kg (0.9 lb)

Communication & Configuration
Protocols:

Modbus RTU (RS-485)

CANopen (optional)

Software: Programmable via Woodward Toolkit™

Firmware: Field-upgradable

Certifications
EMC: EN 61000-6-2/4

Safety: UL 508, CE

Marine: ABS/DNV-GL compliant versions

Typical Applications
Gas turbine speed regulation

Diesel engine governing

Power plant load management

Marine propulsion systems

Note: For wiring diagrams and full documentation, refer to Woodward Manual 82715. Contact factory for application-specific configurations.