Woodward 2301A 9907-018 – Analog Load Sharing & Speed Control for Engines and Generator Sets

The Woodward 2301A-9907-018 is a proven analog governor controller designed for precise speed control and load sharing on diesel or gas engines—particularly in gen-set applications where reliability matters more than bells and whistles. From my experience, this unit shines when you need stable isochronous control, straightforward paralleling behavior, and easy on-panel adjustments without a laptop. It’s typically used with Woodward electric actuators and accepts an MPU speed signal, which makes retrofit work surprisingly smooth in many cases.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Analog load sharing and speed governing – Stable control for single or paralleled gen-sets with isochronous operation and droop options.
• MPU speed input – Uses a magnetic pickup on the flywheel for precise speed feedback; typically very noise-tolerant when shielded cable is used.
• Actuator current output – Drives Woodward electric actuators with a standard current output, typically 0–200 mA, for tight fuel control.
• Compatible load-share line – Works with other 2301A family controls for smooth kW sharing during paralleling.
• On-panel adjustments – Speed set, gain, stability, and droop are accessible via potentiometers; you can tune on-site without special tools.
• Robust build for industrial cabinets – From what I’ve seen, the 2301A holds up well in marine, power, and O&G environments when installed correctly.

Technical Specifications

Application Fields

You’ll typically find the 2301A-9907-018 on:

• Prime power and standby gen-sets (single unit or paralleled to a bus)
• Marine auxiliary engines and shaft generators
• Oil & gas engines driving compressors or pumps
• Industrial engines where stable speed and load sharing are required without a digital PLC

One thing I appreciate is how forgiving it is during commissioning. You can trim gain and stability live to remove hunting, and once set, it tends to stay put. A maintenance manager I worked with said, “We swapped in a 2301A, matched the actuator polarity, and were back on line before lunch.”

Advantages & Value

• Reliability: The analog design is simple and predictable; fewer layers than a digital controller and less sensitive to firmware or config file issues.
• Compatibility: Works with common Woodward actuators (e.g., EG-3P/EGB series) and standard MPU sensors; great for drop-in replacements.
• Serviceability: Pots and test points make field tuning straightforward. In many cases you won’t need a laptop or special software.
• Cost Control: Lower lifecycle costs for plants that prefer analog simplicity; spare stock strategy is easier.
• Support: We can help confirm the correct acting direction, actuator current range, and load-share wiring before you place the order.

Installation & Maintenance

• Cabinet & environment: Mount in a clean, dry control cabinet with adequate ventilation. Keep high-voltage switching cables separated to minimize EMI.
• Wiring: Use shielded, twisted pair for the MPU. Bond shields at one end only. Verify actuator polarity (forward or reverse acting) and link settings before first start.
• Tuning: Start with conservative gain/stability. Bring engine to rated speed, then trim to remove oscillation. Confirm droop/isochronous selection for your application.
• Paralleling: Check load-share line integrity and phase sequence. When paralleled, verify kW sharing across units and adjust share bias as needed.
• Routine checks: Inspect connectors, tighten terminals, and check MPU gap periodically. Light dusting of the board and terminal area helps—avoid solvents.
• No firmware updates: 2301A is analog, so there’s no firmware to maintain—just keep the tuning records and wiring diagram on file.

Quality & Certifications

• Manufacturing quality consistent with Woodward industrial controls
• Typically complies with CE; UL/cUL recognition is common for family units
• RoHS applicability varies by production date/region; we can confirm per serial
• Warranty: 365 days from our side

Related/Supporting Components

• MPU speed sensors – Standard Woodward-compatible magnetic pickups for flywheel speed feedback.
• Electric actuators – Woodward EG-3P or EGB actuator families commonly paired with 2301A controls.
• Power quality accessories – Line filters and proper grounding hardware to reduce EMI in noisy switchrooms.

If you share your actuator model, desired acting direction, and supply voltage, we’ll double-check that 2301A-9907-018 matches your setup and reserve a unit from stock if timing is tight.