9907-028 Woodward 2301A Series Datasheet & Technical Manual

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Woodward 9907-028 2301A Series Reverse-Acting Module The Woodward 9907-028, also cataloged as the 9907-028 Speed Control Module, operates as a...

SKU: 9907-028

Manufacturer: Woodward
Product No.: 9907-028
Product Type: Digital Speed Control Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 1710g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Woodward 9907-028 2301A Series Reverse-Acting Module

The Woodward 9907-028, also cataloged as the 9907-028 Speed Control Module, operates as a dedicated hardware component for prime mover frequency matching and phase locking within Woodward 2301A and Caterpillar 144-5572 network architectures.

Hardware Specifications

Parameter	Specification
Model	9907-028 (Caterpillar Cross-Ref: 144-5572)
Brand	Woodward
Origin	United States
Weight	1.71 kg
Dimensions	387 mm x 181 mm x 64 mm
Operating Temp	-40 to +85 deg C
Power Consumption	115/230 VAC (Field selectable, 50/60 Hz)
Control Mode	Reverse-Acting (Signal output inversely proportional to speed error)
Speed Sensing Input	Magnetic Pickup (MPU) or Variable Reluctance Sensor (VRS)
Speed Range	Adjustable up to 40,000 RPM
Response Time	< 2 ms for a 90% step change in load or speed
Signal Accuracy	+-0.1% of actual reading
Analog Output	4-20 mA (Isolating)
Digital Communication	RS-485 Modbus protocol
Safety Rating	SIL 3 Certified according to IEC 61508
Vibration Resistance	Rated for 20g (per IEC 60068-2-6)

Industrial Drives & Governors Properties

The Woodward 9907-028 integrates specific internal thermal heat sink dissipation profiles to stabilize the internal reverse-proportional fuel logic circuits during extended high-temperature operations. The control module executes a rapid actuator loop feedback response, resolving 90% step changes in load or speed within a 2 ms window. By adjusting the physical internal circuitry parameters, the controller ensures that the isolated 4-20 mA driver output decreases proportionally as speed error deviates upward, enforcing deterministic speed control behavior over a total speed range extending up to 40,000 RPM via the magnetic pickup interface.

Frequently Asked Questions

Q: What are the electrical isolation and safety parameters concerning backplane and switching current?

A: The module maintains distinct galvanic isolation for its 4-20 mA output channel and satisfies IEC 61508 standards for SIL 3 functional safety loops. Current draw varies based on whether the 115 VAC or 230 VAC terminal link is jumped, requiring proper external overcurrent fusing to prevent internal logic disruptions during transient grid shifts.

Q: How is the hardware power configuration shifted between 115 VAC and 230 VAC?

A: Input voltage selection is determined purely via physical terminal jumper wiring combinations on the termination block. The user must configure the terminal links prior to energizing the module to prevent overvoltage damage to the internal transformer circuit.

Q: Can the 9907-028 execute automatic load sharing functions without an external processing unit?

A: Yes, the integrated SPM-A synchronizer core includes active hardware circuits designed to handle frequency matching, phase locking, and proportional load sharing directly when linked in parallel across multiple generator networks.

Field Installation Guidelines

Enclosure Orientation: Mount the unit vertically onto a rigid cabinet structural backplate. Secure the frame using four mounting bolts through the factory-drilled enclosure chassis holes to distribute physical weight and resist the rated 20g vibration limits.
Speed Sensing Input Routing: Route the Magnetic Pickup (MPU) or Variable Reluctance Sensor (VRS) coaxial cables using independent, twisted-shielded conductors. Ground the outer braid at the control chassis end only to prevent potential signal attenuation from induced electromagnetic noise fields.
AC Voltage Terminal Jumpering: Verify that the field jumper matches the local utility grid potential (115 VAC or 230 VAC) before applying power. Ensure all connections on the main terminal bar are torqued properly to maintain low contact resistance.
Signal Line Clearance: Keep all low-level analog 4-20 mA lines and RS-485 Modbus communication lines at a minimum distance of 30 cm from high-power distribution lines, engine ignition loops, or inductive relay banks.

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Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.