Woodward 9905-001 SPM-A Synchronizer

Configured for generator paralleling, the Woodward 9905-001 (9905-001 Synchronizer Module) provides direct electrical execution of frequency, phase angle, and voltage matching within prime mover speed control platforms.

Hardware Specifications

Actuator Loop Feedback Response and Thermal Heat Sink Dissipation Profiles

The 9905-001 synchronizer regulates generator bus alignment by biasing the speed control signal based on real-time phase angle and frequency comparison. The module exhibits an actuator loop feedback response calibrated to maintain phase lock within +/- 10 degrees. Internally, the circuit design emphasizes thermal heat sink dissipation profiles optimized for industrial control cabinets where ambient temperatures may reach +85 deg C. Users must ensure that the output load is correctly matched to the speed regulator impedance to prevent signal drift during the paralleling sequence. The compact form factor necessitates proper air circulation within the DIN-rail or bulkhead mounting environment to maintain long-term component stability.

Frequently Asked Questions

Q: Does the 9905-001 module require external calibration for different frequency ranges (50 Hz vs. 60 Hz)?

A: The module is designed to support both 50 and 60 Hz nominal systems. Ensure the installation setup reflects the grid frequency to allow the internal comparator to correctly determine the phase synchronization window.

Q: Can this module be configured for load sharing between multiple prime movers?

A: The 9905-001 is a dedicated synchronizer module. It provides the necessary frequency and phase bias for paralleling but must be used in conjunction with a compatible Woodward load-sharing controller to achieve balanced real-power distribution between units.

Field Installation Guidelines

• Mounting: Secure the module using the integrated mounting provisions. Ensure the orientation allows for natural convective cooling across the 5.2 in x 3.5 in x 1.4 in profile.
• Wiring: Connect the bus and generator sensing inputs using shielded cabling. Terminate the shield at the cabinet common reference point to maintain signal integrity and minimize susceptibility to electromagnetic interference.
• Input Selection: Verify the input voltage configuration (115 or 230 VAC) via the terminal jumper settings or physical wiring configuration before applying line power.
• Grounding: Maintain a low-impedance connection to the chassis ground to ensure protection against transients and to provide a stable reference for the phase angle detection circuitry.