WOODWARD 9907-018 – Load Sharing & Speed Control Module | Governor Control Platform
工程背景 / Engineering Background
The WOODWARD 9907-018 is a dedicated load sharing and speed control module engineered for parallel operation of generator sets and prime movers. Designed within WOODWARD’s proven governor control platform, this unit enables precise isochronous load sharing across multiple generating units, ensuring stable frequency and equitable load distribution in island-mode or grid-parallel applications. For procurement engineers specifying critical power infrastructure, the 9907-018 represents a field-proven solution with decades of deployment in industrial, marine, and utility environments.
产品定位 / Product Positioning
This module is the control intelligence layer between the speed governor actuator and the plant-level load management system. It accepts speed and load feedback signals, computes the required droop or isochronous correction, and outputs a bias signal to the governor actuator. It is the standard choice for engineers requiring deterministic load sharing without PLC programming overhead.
Complete Technical Specifications
- Part Number: 9907-018
- Manufacturer: WOODWARD
- Function: Load Sharing & Speed Control
- Control Mode: Isochronous Load Sharing / Droop Speed Control (selectable)
- Input Signal: Speed pickup (magnetic), load current transformer (CT) input
- Output: Analog bias signal to governor actuator
- Power Supply: 12–32 VDC (typical WOODWARD governor auxiliary range)
- Operating Temperature: -40°C to +70°C
- Enclosure: DIN-rail or panel-mount compatible module
- Weight: 1,800 g (as configured)
- Communication: Analog I/O; compatible with WOODWARD 2301 and 505 governor families
- Standards Compliance: Designed to meet IEC 61000 EMC requirements for industrial environments
- SKU / Order Code: 9907-018
Proven Application Environments
- Parallel Generator Sets: Diesel, gas, and dual-fuel gensets operating in island-mode microgrids requiring isochronous load sharing
- Marine Power Plants: Shipboard generator paralleling where load swings demand fast, stable governor response
- Industrial Cogeneration: CHP plants with multiple prime movers sharing base load and peak shaving duties
- Utility Standby Systems: Critical facility backup power with N+1 redundancy configurations
- Oil & Gas Facilities: Offshore platform power management with strict frequency tolerance requirements
- Data Center UPS Integration: Generator paralleling for tier III/IV data center power infrastructure
Engineering Advantages
- True Isochronous Load Sharing: Maintains rated frequency (50/60 Hz) while equalizing kW load across all paralleled units — no frequency droop penalty
- Plug-Compatible with WOODWARD Ecosystem: Direct interface with 2301A, 2301D, 505, and EG actuator families — no signal conditioning adapters required
- Deterministic Analog Control: Hardware-based control loop eliminates PLC scan-time latency, critical for fast transient response (<100 ms load step)
- Wide DC Supply Range: Operates across 12–32 VDC, tolerating battery float voltage variations in genset applications
- Minimal Commissioning Time: Potentiometer-based gain and droop adjustments allow field calibration without software tools
- Proven MTBF: WOODWARD governor modules are rated for >100,000 hours MTBF in controlled industrial environments
System Architecture & Signal Flow
The 9907-018 operates as a closed-loop controller within the governor system architecture:
- Speed Reference Input → Magnetic pickup from engine flywheel ring gear
- Load Feedback Input → CT-derived kW signal from generator output bus
- Load Sharing Bus → Interconnect with identical modules on paralleled units (common load sharing line)
- Bias Output → ±mA or voltage signal to governor actuator (EG, UG, or electronic actuator)
- Droop/Isochronous Select → Hardware switch or external contact for mode selection
In isochronous mode, all paralleled 9907-018 modules communicate via the load sharing bus to continuously equalize load. In droop mode, each unit operates independently with a configurable speed droop (typically 3–5%) for stable grid-parallel operation.
Sourcing & Quality Verification
- Source: Konmask.com sources WOODWARD modules from authorized distributors and verified OEM surplus channels
- Inspection Protocol: Each unit undergoes visual inspection, label verification (part number, date code, revision level), and functional continuity check prior to dispatch
- Authenticity: WOODWARD genuine parts carry holographic labels and traceable serial numbers — we verify these before listing
- Condition: New-in-box (NIB) or factory-refurbished units available; condition stated explicitly on order confirmation
- Warranty: 12-month replacement warranty against manufacturing defects; DOA policy within 7 days of receipt
- Export Compliance: ECCN classification confirmed; export documentation available upon request for international shipments
Procurement Process
- Step 1 — Inquiry: Submit RFQ via Konmask.com product page or email support@konmask.com with quantity and required delivery date
- Step 2 — Quotation: Receive formal quotation with unit price (HKD/USD), lead time, and shipping options within 1 business day
- Step 3 — Order Confirmation: Purchase order accepted via email or online checkout; proforma invoice issued for T/T wire transfer or credit card payment
- Step 4 — Inspection & Dispatch: Unit inspected, photographed, and packed with anti-static protection; tracking number provided within 24–48 hours of payment clearance
- Step 5 — Delivery: DHL / FedEx express (3–5 business days international) or sea freight for bulk orders; customs documentation included
- Step 6 — After-Sales: Technical support available via email and WhatsApp; replacement RMA process initiated within 24 hours of defect report
Technical FAQ
Q: Is the 9907-018 compatible with my existing WOODWARD 2301A governor?
A: Yes. The 9907-018 is designed to interface directly with the 2301A and 2301D series governors via the load sharing terminal block. No additional signal conditioning is required.
Q: Can this module be used for single-unit (non-parallel) operation?
A: Yes. In droop mode, the 9907-018 functions as a standalone speed control bias module. The load sharing bus terminals are simply left unconnected.
Q: What CT ratio is required for the load feedback input?
A: The module accepts standard 5A secondary CT output. A burden resistor may be required depending on CT secondary current — refer to WOODWARD manual 82510 for wiring details.
Q: Is a WOODWARD service manual available?
A: Yes. Konmask can provide the relevant WOODWARD technical manual (PDF) upon order confirmation. Contact support@konmask.com to request documentation.
Q: What is the lead time for this part?
A: In-stock units ship within 48 hours. If sourcing is required, typical lead time is 5–15 business days. Contact us for real-time stock status.
Q: Do you provide a certificate of conformance (CoC)?
A: Yes. A CoC is available upon request for all new-in-box units. Refurbished units include a Konmask inspection report.
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