Electronic Load Sharing Module | Woodward 9907-018 2301A
Manufacturer: Woodward
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Part Number: 9907-018
Condition：New with Original Package
Product Type: Electronic Speed Controllers
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Country of Origin: GERMANY
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Woodward 9907-018 2301A Electronic Load Sharing and Speed Control Module
The Woodward 9907-018, also cataloged as the 9907-018 2301A Electronic Load Sharing and Speed Control Module, operates as a dedicated hardware component for prime mover speed regulation and dynamic load distribution within engine and turbine control systems. Running on a low-voltage 20-40 VDC power input, this analog control module processes magnetic pickup speed sensor frequencies and 4-20 mA or 1-5 VDC analog command signals. It outputs a 0-200 mA proportional current signal to position actuator valves in either isochronous or droop control modes.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 9907-018 |
| Brand | Woodward |
| Origin | USA |
| Weight | Not specified |
| Dimensions | 15.25 in W x 7.125 in H x 2.5 in D (~16 x 16 cm) |
| Operating Temp | -40 deg C to +85 deg C |
| Power Consumption / Input Voltage | 20-40 VDC (Low voltage), Power consumption <= 15 W |
| Product Type | Electronic Load Sharing and Speed Control Module |
| Compatible Series | 2301A Series |
| Control Modes | Isochronous (constant speed), Droop (proportional load sharing) |
| Input Signals | 4-20 mA, 1-5 VDC, Magnetic pickup speed sensor |
| Output Signal | 0-200 mA proportional actuator output |
| Speed Range | 500-1500 Hz, 1000-3000 Hz, 2000-6000 Hz, 4000-12000 Hz |
| Accuracy / Repeatability | Accuracy: +-0.2% of full scale; Repeatability: +-0.1% of full scale |
| Humidity Range | 5%-95% non-condensing |
| Enclosure Type | Metal housing, single PCB design |
| Front Panel Adjustments | Potentiometers for tuning and calibration |
| Certifications | CE marked (EU Low Voltage & EMC), CSA certified |
Actuator Loop Feedback Response
The Woodward 9907-018 delivers high-speed actuator loop feedback response by processing magnetic pickup speed signals across configurable frequency bands up to 12000 Hz. The internal high-gain processing circuit calculates the deviation between measured engine frequency and the setpoint, adjusting the 0-200 mA current loop output to modify actuator fuel rack positioning. During paralleled load sharing, the control circuitry dynamically balances prime mover kilowatt output via the load sharing lines, preventing fuel rack hunting and suppressing power swings during sudden electrical load step changes.
Frequently Asked Questions
Q: How does the Woodward 9907-018 handle speed feedback processing during start-up?
A: The module evaluates input pulse frequency from a magnetic pickup mounted near the flywheel gear teeth. Internal filtering logic validates speed signal integrity within configured frequency ranges (such as 500-1500 Hz or up to 4000-12000 Hz) to maintain linear 0-200 mA actuator driver output without speed jitter.
Q: What power input constraints apply to the low-voltage 9907-018 variant?
A: The 9907-018 requires a regulated nominal 20-40 VDC power supply drawing 15 W or less. Operating outside these DC voltage limits can result in control instability or trigger internal supply protection shutdown.
Q: How should signal lines be wired to minimize electromagnetic interference on the magnetic pickup and analog inputs?
A: Installers must use twisted-pair shielded cabling for all magnetic pickup and analog input channels (4-20 mA / 1-5 VDC). Ground the cable shields at a single chassis ground connection point inside the control cabinet to eliminate ground loops and induced noise.
Field Installation Guidelines
Mount the metal chassis enclosure vertically inside a rated control cabinet using standard mounting hardware to protect against excessive vibration and thermal build-up. Route low-voltage 20-40 VDC power conductors separately from high-voltage AC lines and current transformer leads to prevent inductive noise coupling into sensitive control circuits. Connect all cable shields to a common earth ground terminal stud located near the module chassis. Verify that potentiometer settings on the front panel match system speed and droop specifications before applying DC power to the unit.