In mission-critical rotating machinery applications—such as gas turbines, steam turbines, high-speed compressors, and large-bore marine engines—control precision and system reliability are not optional; they are absolute prerequisites. The WOODWARD WIC5417-028 is a high-performance member of the renowned WIC5000 (Woodward Integrated Control) Series, a programmable, ruggedized automation platform engineered to deliver deterministic, high-speed control in the harshest industrial and maritime environments.
Designed as a drop-in replacement or a forward-looking upgrade for legacy Woodward systems (such as the 723PLUS or 505), the WIC5417-028 combines a powerful 32-bit processor, flexible multi-protocol communication, and a comprehensive I/O suite. It serves as the “brain” for prime movers and driven equipment, ensuring stable operation, fuel efficiency, and comprehensive safety management—all within a compact, panel-mountable chassis.
1. System Architecture & Core Positioning
The WIC5417-028 belongs to the WIC5000 family—a scalable, microprocessor-based control platform tailored specifically for speed, load, temperature, and pressure control loops. Unlike general-purpose PLCs, the WIC5417 is purpose-built with deterministic scan cycles (as fast as 2–5 ms) to handle the ultra-fast transient responses of turbo-machinery.
This specific model (“-028” configuration) features a pre-defined hardware build optimized for critical field inputs and outputs, typically including high-density analog measurement channels (thermocouple/RTD), high-speed magnetic pickup (MPU) inputs, and rugged PWM actuator drivers. It is equally at home in a ship’s engine room, a gas compression station, or a power-generation facility.
2. Key Technical Specifications (Model WIC5417-028)
| Parameter | Specification |
|---|---|
| Product Series | Woodward WIC5000 (Integrated Control) |
| Processor | 32-bit RISC microcontroller with floating-point unit (FPU) |
| Control Scan Rate | Configurable from 2 ms to 50 ms (deterministic) |
| Power Supply | 18 – 36 VDC (Nominal 24 VDC) with reverse polarity protection |
| Typical Power Consumption | < 40 W (depending on I/O load) |
| Speed Sensor Inputs | 2× MPU (Magnetic Pickup) channels: 0.5 – 120 VAC, 10 Hz – 15 kHz |
| Analog Inputs (Flexible) | 6× universal inputs: configurable for 4-20mA, 0-10V, RTD (Pt100), or Thermocouple (J/K/T/E) |
| Analog Outputs | 2× isolated 4-20mA outputs (for actuator position demand / setpoint) |
| Digital Inputs | 8× optically isolated (Start/Stop, Raise/Lower, Emergency Stop, Mode Select) |
| Digital Outputs | 4× relay outputs (Form A or C) – 2A @ 30VDC/250VAC |
| PWM Actuator Output | 1× high-current driver for proportional solenoid actuators (up to 3A) |
| Communication Ports | 1× Ethernet (Modbus TCP / TCP/IP); 2× Serial (RS-232/RS-485 with Modbus RTU); 1× CAN SAE J1939 |
| Real-Time Clock | Yes (battery-backed) for time-stamped event logs |
| Operating Temperature | –40°C to +70°C (–40°F to +158°F) |
| Storage Temperature | –55°C to +90°C |
| Enclosure / Mounting | IP20 rated; DIN-rail or chassis panel mount |
| Agency Approvals | CE, UL/cUL, ATEX Zone 2 / IECEx (for hazardous areas when properly enclosed), DNV-GL Marine Type Approval |
3. Core Functions & Competitive Advantages
3.1 High-Speed, Precision Control Algorithms
The WIC5417-028 utilizes Woodward’s advanced PID and state-space control algorithms with adaptive gain scheduling. It supports:
- Isochronous (droop-less) speed control for infinite bus loading.
- Droop control for parallel generator operation.
- Cascade control (Speed + Temperature, or Speed + Pressure) for optimized turbine efficiency.
- Fuel limiting (Torque, Temperature, or Surge protection) to ensure the prime mover operates within safe mechanical and thermal limits.
3.2 IEC 61131-3 Programmable Flexibility
Unlike fixed-function governors, the WIC5417-028 is fully user-programmable via Woodward’s Control Assistant or ToolKit software. Users can choose from all five standard languages:
- Ladder Diagram (LD)
- Function Block Diagram (FBD)
- Structured Text (ST)
- Instruction List (IL)
- Sequential Function Chart (SFC)
This allows integrators to design custom logic sequences, such as auto-start sequences, load-shedding schemes, or emergency shutdown (ESD) interlocks, directly within the same chassis.
3.3 Rugged Actuator Driving Capability
The integrated high-current PWM driver is specifically tuned for Woodward’s industry-standard proportional actuators (e.g., 8290 series) and can be software-configured for frequency (20 Hz – 10 kHz) and dead-band compensation, ensuring ultra-smooth fuel rack positioning with zero oscillation.
3.4 Comprehensive Redundancy & Safety
The hardware supports redundant power supply connections and offers built-in hardware watchdog timers. In the event of a CPU fault or sensor loss, the unit defaults to a programmable “safe-state” (e.g., fuel shut-off or hold-last-position). Additionally, dual MPU inputs allow for a “voting” logic, preventing false overspeed trips caused by sensor noise.
3.5 Rich Diagnostic & Data Logging
The unit features an onboard data historian capable of logging critical parameters (speed, exhaust temp, vibration) at configurable intervals. The Ethernet port enables remote monitoring via standard SCADA systems, significantly reducing the mean time to repair (MTTR) by allowing technicians to diagnose faults without physically accessing the engine room.
4. Typical Application Scenarios
The WOODWARD WIC5417-028 is the solution of choice for high-value rotating assets across multiple verticals:
- Marine & Offshore – Main propulsion control for LNG carriers, DP-2/DP-3 vessels, tugboats, and ferries. Certified by major classification societies for continuous bridge and engine-room duty.
- Power Generation – Prime mover control for gas-turbine generator sets (GTGs) and diesel gen-sets operating in island mode or parallel with utility grids.
- Oil & Gas – Compressor anti-surge control and speed management for pipeline transmission, gas gathering stations, and refinery process units.
- Hybrid Propulsion Systems – Integrating diesel engines with shaft generators and battery packs for fuel-saving, low-emission marine operations.
5. Environmental Robustness & Certification
Designed to perform under the most extreme conditions, the WIC5417-028 features a conformal-coated printed circuit board assembly (PCBA) to resist salt spray, humidity, and airborne contaminants.
- Vibration & Shock: Compliant with IEC 60068-2-6 (5g at 10-500Hz) and IEC 60068-2-27 (15g shock).
- EMC: Meets stringent maritime and industrial immunity standards (EN 61000-6-2, EN 61000-6-4).
- DNV-GL Approval: Carries type-approval for marine applications, covering temperature, humidity, vibration, and electromagnetic compatibility requirements.
6. Product Status & Lifecycle Support
Please note: The WIC5417-028 is an active, fully supported product within the Woodward portfolio. Woodward continues to provide long-term lifecycle support, firmware updates, and field services for this model. It offers a clear migration path for older legacy systems (such as the 505 or 723PLUS), delivering modern connectivity and performance without requiring a complete overhaul of the existing actuator and sensor infrastructure.
7. Conclusion
The WOODWARD WIC5417-028 is far more than a standard engine governor—it is a fully featured, high-speed integrated control system that brings the power of modern industrial automation to the world of rotating machinery. Its unmatched combination of deterministic processing, rugged environmental tolerance, flexible programmability, and comprehensive communication protocols makes it the definitive choice for operators and integrators seeking to maximize uptime, enhance safety, and reduce fuel consumption on critical assets.
Whether you are building a new-generation DP vessel, upgrading a gas compression train, or modernizing a power plant, the WIC5417-028 delivers the intelligence and endurance your operations demand.
