WOODWARD 9907-147 is a specialized controller for managing and protecting engines running on heavy fuels (fuel oil, heavy diesel) by Woodward, designed for large industrial and energy installations. This model WOODWARD 9907-147 combines high resistance to aggressive fuel components with precise regulation, making it ideal for thermal power plants, metallurgical factories, and marine power systems with engines ranging from 500 kW to 10 MW. WOODWARD 9907-147 ensures stable operation under high fuel temperatures and variable loads, minimizing operational costs and preventing emergency modes. WOODWARD 9907-147 easily integrates with DCS systems via industrial protocols, simplifying centralized control. WOODWARD 9907-147 is certified to ISO 8217 and IMO MARPOL standards, confirming compliance with requirements for heavy fuels in the energy and maritime sectors. [Insert product link here, enwrapping it in brand and model: WOODWARD 9907-147]
- Device Type: Controller for heavy fuel engines with regulation, fuel heating, and comprehensive protection functions.
- Functional Parameters:
- Speed regulation range: 500–2000 rpm (configurable) — suitable for large marine and stationary installation engines.
- Regulation accuracy: ±0.1% of nominal speed — stability under variable fuel parameters (viscosity, temperature).
- Operating modes: Automatic fuel supply regulation, fuel heating system control (up to 150°C), grid synchronization, manual mode — adaptability to heavy fuels.
- Protection types: Overspeed (2 independent channels), engine overheating, low oil pressure, fuel filter clogging, heating system failure — protection against engine-damaging and environmentally hazardous conditions.
- Supported sensors: Fuel temperature sensors (4–20 mA), viscometers, magnetic speed sensors (20–100 teeth), K-type thermocouples — monitoring of fuel and engine status.
- Supported protocols: Modbus TCP/IP, PROFIBUS DP — integration with DCS systems (e.g., Siemens S7, ABB 800xA).
- Electrical Parameters:
- Power supply: 24 VDC (redundant, dual-source) — protection against power loss in critical systems.
- Current consumption: ≤300 mA — moderate energy usage, considering heating system control.
- Control outputs: 4 analog outputs 4–20 mA (fuel supply regulation, heating power), 8 relay outputs (NC/NO, 10 A, 250 VAC) — control of valves, filters, signal lamps.
- Mechanical Characteristics:
- Housing material: Aluminum with heat-resistant and anti-corrosive coating — resistance to high temperatures and aggressive fuel components.
- Protection class: IP20 — installation in engine control cabinets.
- Temperature range: -30°C – 75°C (operating); -40°C – 90°C (storage) — operation in engine room-like environments.
- Dimensions: 140 × 200 × 60 mm (width × depth × height) — compact design for dense mounting with other modules.
- Heavy fuel heating control: WOODWARD 9907-147 automatically adjusts heavy fuel (fuel oil, heavy diesel) temperature based on viscosity, ensuring uniform injection and reducing injector wear by 30–40% compared to controllers without this function.
- Filter clogging protection: Built-in fuel filter condition sensors allow WOODWARD 9907-147 to warn of replacement needs, preventing fuel shortages and engine failures.
- Resistance to aggressive environments: The housing and internal components of WOODWARD 9907-147 are protected against corrosion and harsh substances in heavy fuels, doubling service life compared to standard models.
- Flexible integration with marine power systems: Support for maritime protocols (e.g., IMO-compliant) makes WOODWARD 9907-147 ideal for engines in cargo liners and tankers.
- Fuel oil-fired thermal power plants:
- Controlling large diesel generators: WOODWARD 9907-147 regulates fuel oil supply and heating, ensuring stable power generation and preventing clogs.
- Marine vessels:
- Managing main engines of tankers and cargo ships: The controller optimizes heavy fuel consumption and prevents failures during long-term maritime operation.
- Metallurgical factories:
- Controlling engines for power supply (e.g., steam generators): WOODWARD 9907-147 operates in high-temperature environments, ensuring stable production processes.
Compared to similar heavy fuel controllers (MAN Energy Solutions Engine Control, Wärtsilä Engine Control Unit), WOODWARD 9907-147 offers:
- More precise fuel heating regulation: Temperature control with ±1°C error vs. ±3°C in competitors — critical for heavy fuels with narrow viscosity ranges.
- Wider protocol support: Includes Modbus TCP/IP as standard, while competitors require additional options — simplifying integration with diverse systems.
- Lower maintenance costs: Replacement of consumables (filters, capacitors) costs 20–25% less than proprietary competitor solutions.
- Selection: Recommended for heavy fuel engines with 500 kW – 10 MW capacity in thermal power plants, maritime sectors, and metallurgy. Fully compatible with MAN, Wärtsilä, and Caterpillar Marine engines.
- Precautions:
- For WOODWARD 9907-147, regularly inspect fuel heating systems and calibrate viscometers (every 3 months) — inaccurate data will lead to suboptimal engine performance.
- Use only original high-temperature rated cables (≥125°C) — protection against overheating near engines.
- Update firmware via Woodward HeavyFuel Pro software — new versions include algorithm improvements for low-sulfur heavy fuel variants.
- Mount the controller in forced-ventilation areas when engine room temperatures exceed 60°C — preventing electronic component overheating.
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