Woodward 8901-457 Converter

The Woodward 8901-457 is a high-performance frequency-to-voltage converter designed for use in turbine and engine control systems. It converts AC voltage or frequency signals—typically from magnetic pickups, tachometers, or other rotational speed sensors—into a proportional DC voltage signal, enabling seamless integration with controllers and monitoring systems.

Engineered for industrial and power generation environments, this converter delivers accurate and reliable signal transformation, even under extreme temperatures, vibration, and harsh conditions. Its rugged construction and fast response make it ideal for precision speed measurement and control.

Key Features

• Converts AC frequency/voltage signals to DC voltage

• Suitable for use with magnetic pickups, tachometers, or similar sensors

• Fast response time (<10 ms)

• Reliable performance in harsh environments

• Panel or chassis-mountable for flexible installation

• Wide operating temperature range

Technical Specifications

• Part Number: 8901-457

• Module Type: Frequency-to-Voltage Converter

• Input Signal:

• AC voltage from magnetic pickup or tachometer

• Typical input range: 0.5 to 20 V peak-to-peak

• Input Frequency Range: 1 Hz to 10 kHz

• Output Signal:

• DC voltage, proportional to input frequency

• Example: 0–10 VDC for full-scale input

• Output Load Capacity:

• Minimum: 1 kΩ

• Recommended: 10 kΩ

• Power Supply: 24 VDC nominal

• Power Consumption: Approx. 5 W

• Response Time: Less than 10 ms

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

• Storage Temperature Range: –50°C to +100°C

• Humidity Tolerance: 0% to 95% RH, non-condensing

• Mounting Method: Panel or chassis-mounted

• Dimensions: Approx. 120 mm × 80 mm × 40 mm

• Weight: 0.4 kg