I. Product Description

Brand: WOODWARD (USA), Model: 9907-014 (belongs to the 2301A analog electronic speed regulation series), Original imported analog electronic speed controller, positive action output type, high-frequency speed measurement specification (2000~6000Hz), relies on magnetic pulse sensor MPU to collect engine speed, outputs 0~200mA to drive electro-hydraulic actuator; supports single unit constant speed, parallel connection of multiple units for load sharing, it is a classic original speed regulation spare part for diesel/gasoline generators and small steam turbine units, the old 2301 model controller can be directly replaced in place.

Key Technical Parameters Table

Parameter Item  Technical Specification

Power Supply Voltage  DC 18～40V, nominal 24VDC (compatible with 12V/24V battery packs)

Overall Power Consumption  Rated 5W, maximum 15W

Speed Acquisition (MPU)  Input 1.0～30VAC, startup minimum 1Vrms, rated maximum 30Vrms

Speed Measurement Frequency  2000～6000Hz (High-frequency model)

Actuator Output  DC 0～200mA (standard Woodward actuator driver)

Load Distribution Input  0~3VDC, input impedance 25kΩ

Operating Temperature  -40℃～+70℃

Overall Dimensions  270×214×58mm (sheet metal enclosure, wall-mounted installation)

Overall Net Weight  Approximately 1.22kg

Installation Method  Cabinet wall-mounted installation

Product Performance

Dual Control Mode: Constant Speed (Isochronous single machine constant frequency) + Droop (Droop multiple machines parallel load distribution), one-click switch of operating conditions;

Positive Action Control Logic: Increase in output current → actuator opens the throttle / valve, excellent speed ｄｒｏｐ suppression effect during transient load changes, strong grid frequency stability;

Multiple knobs on the panel for on-site adjustment: speed setting, gain, stability, droop rate, starting fuel quantity, all hardware knobs for on-site debugging, no need for software programming;

Parallel connection of multiple machines load synchronization, automatic equal distribution of active load for the same specification units in parallel, eliminating bias loading and runaway faults;

Full metal shielding shell, resistant to engine vibration, frequency converter electromagnetic interference, suitable for harsh conditions in the wild, oil fields, ships; power-off parameters permanently retained, no risk of program loss.

Application Domains

Land-based power generation: factory self-owned diesel / gas power stations, data center emergency backup power generators, distributed power sources in industrial and mining areas;

Oil and gas industry: oilfield associated gas power generation units, power control for self-owned power plants of refineries;

Ship power: auxiliary generator units for ocean-going ships for parallel speed regulation;

Small power: small gas turbines, micro hydro power generation units for speed and load control.

List of Main Models in the 2301A Series

9907-014: Low-voltage 24VDC, high-frequency speed measurement, positive action, with load distribution (this product)

8272-609: Wide-voltage model (90~150VDC/85~132VAC high-voltage power supply)

8272-610: Automatic loading type, optimized idle and rated speed switching, dedicated for heavy-load units

8272-611: With external potentiometer for remote speed control selection, supports remote fine-tuning of 0~10% speed

9907-015: Reverse action output model (output increase closes the throttle, suitable for reverse actuators)