Configured for precise engine-driven generator regulation and speed reference execution in power management networks, the WOODWARD 8273-501 (8273-501 Digital Load Sharing and Speed Control) provides direct physical/electrical execution.

Hardware Specifications

Actuator Loop Feedback Response and Dynamic Load Sharing

The module evaluates incoming MPU frequency signals ranging from 100 to 20,000 Hz to calculate real-time speed deviations against a 4-20 mA speed reference input. Control routines switch between isochronous and droop load sharing modes, maintaining high actuator loop feedback response. Internal output drivers adjust governor actuator positioning to balance generator load steps without inducing speed hunting or mechanical resonance.

Frequently Asked Questions

Q: How is the RS-232/RS-422 serial interface configured for parameter tuning?

A: Serial communication connects via the dedicated 9-pin connector at baud rates between 1200 and 38,400 baud in full duplex mode to adjust internal control parameters using Woodward service software.

Q: What power supply tolerances are required for continuous operation?

A: The hardware operates within an 18 to 40 VDC input range (nominal 24 VDC) and draws less than 20 W under full I/O loading conditions.

Field Installation Guidelines

1. Mount the control chassis securely on a flat vertical surface within an ordinary (non-hazardous) location enclosure.
2. Route magnetic pickup unit (MPU) wires using twisted-shielded pair conductors, terminating the shield at the chassis ground lug only.
3. Ensure the main 24 VDC power supply feed incorporates an inline slow-blow fuse rated to support the 20 W power requirement.
4. Maintain separation between RS-232/RS-422 serial lines and high-current relay output cabling to prevent electrical noise coupling.
5. Provide a minimum clearance of 50 mm around the housing to facilitate thermal convection cooling across the unit.