Woodward 9907-186 Load Sharing Module

Configured for power management in generator control systems, the Woodward 9907-186 (GS10 Load Sharing Module) provides direct electrical execution of load distribution logic across parallel power generation units.

Hardware Specifications

Actuator Loop Feedback Response and Load Management

The 9907-186 GS10 module modulates the actuator loop feedback response to ensure precise fuel control and load stabilization between paralleled generator sets. During operation, the module compares the active load sharing signal with the local bus frequency and voltage references. Corrective output is applied to the speed control governor to maintain proportional load distribution. Thermal management is necessary; ensure that the heat sink dissipation profiles are respected by maintaining adequate clearance around the module housing to prevent component overheating during sustained high-load conditions.

Frequently Asked Questions

Q: Does the 9907-186 support hot-swap capabilities while the generator is running?

A: No. The module is not designed for hot-swapping. Removal or installation must be performed while the control system is de-energized to prevent electrical arcing and potential damage to the backplane communication circuitry.

Q: How should the load sharing signal wiring be shielded to prevent interference?

A: Use twisted-shielded pair cabling for all load-share and speed-trim signals. The shield should be grounded at the control cabinet common point only to prevent ground loops that introduce voltage offsets into the control algorithm.

Field Installation Guidelines

• Mounting: Ensure the module is mounted vertically on a DIN rail or cabinet backplane to facilitate proper thermal convection.
• Wiring: Keep load-sharing signal wires separate from high-power AC output cables and motor control wiring to avoid electromagnetic interference (EMI).
• Connections: Verify that all terminal block screws are tightened to the specified torque. Loose connections can result in erratic load-sharing behavior and instability in the governor actuator signal.
• Grounding: Confirm that the module chassis is properly bonded to the control system earth ground to provide surge protection and signal stability.