9905-001 SPM-A WOODWARD
This machine is part of the Woodward Inc. series of devices. This line is called the SPM-A synchronizer model series. These units are built as modules for industrial generators and can run and process multiple general applications. Before any parallel connection occurs with another generator or public bus, the SPM-A synchronizer can match the speed and phase of the generator it is connected to.

These synchronizer modules are designed with a series of user adjustable dynamics to match the engine’s dynamics. Small and medium-sized diesel engines require a fast dynamic unit, while large equipment (such as large diesel/gas/gasoline engines and turbomachinery) requires a slow dynamic unit. This Woodward SPM-A device is model 9905-003 and can be purchased from AX Control Inc. Our inventory consists of new, unused remaining hardware, as well as lightly used, fully optimized, and refurbished equipment. 9905-003 operates by biasing the speed of the offline generator it is connected to, in order to match the frequency and phase with the frequency and phase of another generator in the system.

Afterwards, before the specified matching time, when they match within the limited range, it will send a contact closure signal to close the circuit breaker. The frequency range of this device is 50 to 60 Hz, with a phase angle of+/-10 degrees, and a voltage matching ability of within 5%. The standard operating modes installed on this machine include RUN, CHECK, PERMISSIVE, and OFF. To match the frequency and phase with the frequency and phase of another generator in the system. Afterwards, before the specified matching time, when they match within the limited range, it will send a contact closure signal to close the circuit breaker. The frequency range of this device is 50 to 60 Hz, with a phase angle of+/-10 degrees, and a voltage matching ability of within 5%.

The standard operating modes installed on this machine include RUN, CHECK, PERMISSIVE, and OFF. To match the frequency and phase with the frequency and phase of another generator in the system. Afterwards, before the specified matching time, when they match within the limited range, it will send a contact closure signal to close the circuit breaker. The frequency range of this device is 50 to 60 Hz, with a phase angle of+/-10 degrees, and a voltage matching ability of within 5%

This device is one of several Woodward Inc. manufactured equipment from AX Control Inc.’s used and remaining industrial hardware inventory. The Woodward device is listed as a 9906-121 SPM-A synchronizer module. These synchronizer modules are designed to be integrated into the generator power system of a three-phase AC generator.
The Woodward SPM-A series is a phase-locked loop synchronizer module designed for precise frequency and phase matching. These units can perform voltage matching while generating additional increase and decrease signals for the voltage regulator of the generator.