Woodward 8901‑457 Digital Speed Controller

Description:

Woodward 8901‑457 is a digital speed controller designed for precise closed‑loop regulation of diesel and gas engines in industrial and marine applications.

Specifications:

• Manufacturer: Woodward

• Model: 8901‑457

• Type: Digital Speed Controller (723PLUS series)

• Power Supply: 10–35 VDC

• Speed Input: Magnetic pickup (MPU), 60–12,000 Hz

• Control Outputs: 4–20 mA, ±20 mA, PWM

• Communication: Modbus RTU, CANbus

• Accuracy: ±0.25% steady‑state speed regulation

• Response Time: Adjustable 0.1–20 seconds

• Operating Temperature: –40 °C to +85 °C

• Protection Rating: IP52 (NEMA 4X optional)

• Weight: ~930 g

• Application: Diesel/gas engines, marine propulsion, generator sets

Features:

• Closed‑Loop Digital Control: Ensures stable and accurate speed regulation

• Flexible Outputs: Supports analog and PWM signals for actuator control

• Communication Ready: Modbus and CANbus integration for system networking

• Wide Speed Range: Handles MPU input from 60 to 12,000 Hz

• Industrial Reliability: Built for harsh environments with IP52 protection

• Global Certification: CE and UL compliance for worldwide deployment