I. Product Introduction

Model: 9907-173 (Rev.C), Woodward 9907 Series Independent Load Distribution Module, AC AC-powered type, not an integrated speed controller, it is an external load distribution unit. It is used in conjunction with 2301A / third-party brand speed controllers for mixed grid connection, enabling parallel active power distribution of different brand units. It is an original factory imported spare part from the United States.

Output compatible with speed controllers: ±3VDC / 0.5~4.5VDC / PWM three speed setting signals. It is compatible with Woodward, domestic, and other brand electronic speed boards for mixed networking.

Key Electrical Parameters Table

Project Specification Parameters

Power Supply AC 95~260V (115/230VAC adaptive, wide voltage AC)

CT Current Input 3~7A CT secondary side (active power collection)

PT Voltage Input 100~240VAC line voltage sampling

Load Output ±3VDC analog speed correction signal

Slack Regulation Panel potentiometer 0~10% slack adjustable

Dimensions 273.6×214.1×59.2mm | Net weight ≈ 1.4kg

Operating Temperature Range -40℃~+70℃, cabinet rail installation

Power Consumption 5~20W, varies with the number of connected units

Core Functions

Cross-brand unit grid connection equalization: Solves the problem of uneven active power when combining Woodward speed control units with non-Woodward electronic control units, and unifies the load bus networking;

Dual control logic

Isoch without difference: Stand-alone single machine constant frequency operation;

Droop with difference: Multi-unit grid connection automatic equalization of active power, twisted-pair load sharing bus;

Used in conjunction with Woodward SPM-A/SPM-D synchronizers and AGLC automatic loading modules for complete use, commonly used for self-contained power station parallel transformation;

Fault Self-Detection: Breaker, PT/CT voltage, current loss indicator alarms. IV. Applicable Scenarios

Diesel/gasoline generator sets, self-owned power plants for refining and chemical industries, and new and old ship power station units for renovation and grid connection. When the original governor does not have the load distribution function, an external expansion unit is added.

Series Differentiation

9907-173: AC 110/220V power supply, external load distribution board (single item)

9907-014/018: 24VDC complete unit 2301A governor (comes with speed control + load distribution integrated)