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8290-195 EPG Electrically Powered Governor Woodward

8290-195 EPG Electrically Powered Governor Woodward

The Woodward 8290-195, also cataloged as the 8290-195 Electrically Powered Governor, operates as a dedicated hardware component for isochronous speed control within prime mover fuel management loops. The controller processes...

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SKU: 8290-195
Vendor: Woodward
Category: EPG Electrically Powered Governor
Related Series:

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The Woodward 8290-195, also cataloged as the 8290-195 Electrically Powered Governor, operates as a dedicated hardware component for isochronous speed control within prime mover fuel management loops. The controller processes electromagnetic magnetic pickup (MPU) frequency signals between 3000 Hz and 6000 Hz, outputting corrected control signals directly to Woodward 512 or 712 electric actuators to drive fuel control mechanisms without requiring hydraulic fluid lines or mechanical drive linkages.

Hardware Specifications

Parameter Specification
Model 8290-195
Brand Woodward
Origin USA
Operating Temp -20 deg C to +70 deg C
Power Consumption Minimum 5 A battery charger requirement
Dimensions 144 mm x 72 mm x 122 mm
Weight 2.98 kg (2.16 lbs)
Speed Range 3000 Hz to 6000 Hz
System Voltage 12 VDC
Actuator Rotation 30 deg to 35 deg (CW or CCW)
Mounting Options Panel mount or DIN rail
Actuator Support Woodward 512 and 712 series

Actuator Loop Feedback Response & Speed Control

The Woodward 8290-195 evaluates speed feedback from magnetic pickups and generates corrective commands to maintain zero speed droop under changing load profiles. The system optimizes actuator loop feedback response by matching output drive signals to electric actuators with 30 deg to 35 deg rotational sweeps. The module features integrated analog control circuits compatible with external load sharing modules for parallel generator synchronization.

Frequently Asked Questions

Q: What power supply characteristics are required for the Woodward 8290-195 governor control?

A: The control unit requires a nominal 12 VDC operating voltage and a battery charging circuit rated for a minimum of 5 A continuous current to handle transient actuator current draws.

Q: Which actuators interface directly with the 8290-195 speed control unit?

A: The module directly interfaces with Woodward 512 and 712 electric actuators, providing clockwise or counterclockwise output rotation across a 30 deg to 35 deg arc.

Q: What speed sensing input frequency range is accepted by the signal processor?

A: The input stage processes continuous magnetic pickup sensor pulse streams between 3000 Hz and 6000 Hz for precise speed regulation.

Field Installation Guidelines

  • Verify that supply polarity and 12 VDC voltage levels are within specification before making terminal connections.
  • Route magnetic pickup (MPU) cables using twisted shielded pair wiring separate from DC power wires and high-voltage AC lines.
  • Terminate the MPU cable shield at the controller earth ground terminal only; leave the sensor end isolated to prevent ground loops.
  • Ensure 5-turn thread engagement when securing mounting hardware on panel or DIN-rail installations.
  • Verify mechanical linkage freedom on the fuel control lever to minimize friction before powering the actuator circuit.