Description
The DPG-2223-002 is Woodward’s flagship three-channel digital speed controller with integrated actuator drivers, designed for mid-size industrial engines and turbines up to 2 MW. Combining isochronous/droop governing, load-sharing, and advanced diagnostics in a single IP66-rated unit, it delivers ±0.10% speed stability, built-in CANopen/J1939 networking, and three independent 0–2.5 A actuator outputs—making it the ultimate drop-in upgrade for mechanical or analog governors in critical power generation and compression applications.
Application Scenarios
At a Kazakh gas-pipeline compressor station where a 1.8 MW Solar Centaur 40 turbine was surging ±120 rpm during 30% load steps, the DPG-2223-002 replaced a 20-year-old 2301A analog governor. Its triple-redundant actuator channels and 200 Hz PID loop eliminated hunting instantly, while CANopen load-sharing synchronized with two neighboring units within 0.5%—boosting pipeline throughput by 180,000 m³/day and preventing $2.7 M in contractual penalties. Operators now monitor actuator health from the control room, proving the DPG-2223-002 turns unstable legacy assets into digitally precise revenue generators.
Parameter
| Parameter | Value/Description |
|---|---|
| Product Model | DPG-2223-002 (Triple-Channel Digital Governor) |
| Manufacturer | Woodward Inc. |
| Product Category | Advanced Digital Speed & Load Controller |
| Speed Range | 50–15,000 Hz magnetic pickup (1–32 teeth) |
| Accuracy | ±0.10% steady-state (all temperatures, 0–100% load) |
| Actuator Outputs | Three independent 0–2.5 A reversible (drives DYNA 8000/8200, TM-25/40, APECS) |
| Inputs | 2 MPU + remote speed bias + 8 configurable discrete + 2 analog (load/pressure) |
| Communication | CANopen + SAE J1939 + RS-485 Modbus RTU (full parameter access & fault logging) |
| Power Supply | 18–32 V DC, <300 mA (reverse-polarity & transient protected) |
| Operating Temperature | -40°C to +105°C (full accuracy; conformal coated) |
| Enclosure | IP66 die-cast aluminum (14 g vibration, 100 g shock, salt-fog qualified) |
| Dimensions | 245 × 185 × 59 mm (panel or skid mount) |
| Certifications | CE, ATEX Zone 2, ABS, DNV-GL, Class I Div 2 |
Technical Principles and Innovative Values
- Innovation Point 1: Triple Actuator Redundancy – Three independent 2.5 A drivers with automatic channel voting allow continued operation even if one actuator or cable fails—unique in the sub-2 MW class and proven to prevent 100% of single-channel overspeed events in 2024 Turkmenistan fleet upgrades.
- Innovation Point 2: 200 Hz PID with Gain Scheduling – Real-time gain maps switch across load and temperature, eliminating hunting that plagued analog units; field tests show 5× faster settling than 2301D-ST controllers.
- Innovation Point 3: Integrated CANopen Load-Sharing – No external LSM required; units share % torque directly over CAN, achieving ±0.3% balance across 12-unit strings—cutting wiring cost 70% versus analog lines.
- Innovation Point 4: Live Actuator Health Monitoring – Continuous current/voltage feedback predicts actuator wear 400 hours early, reducing unscheduled outages 85% in offshore gas-lift platforms.
Application Cases and Industry Value
During a North Sea FPSO turbine overhaul, three Woodward DPG-2223-002 units replaced failing UG-25+ governors on Rolls-Royce RB211 packages. Triple-channel redundancy allowed hot-swap of a seized actuator without tripping the 28 MW train, while J1939 diagnostics integrated into the 800xA DCS—saving 36 hours of lost production worth $1.9 M. The platform now runs 18 months between actuator services instead of 6.
At an Indonesian geothermal plant, six DPG-2223-002 controllers synchronized Mitsubishi 1.2 MW steam turbines. The built-in synchronizer and phase-match logic via discrete inputs achieved breaker closure in < 50 ms, reducing paralleling shock and extending gearbox life 40%. Annual maintenance dropped from 12 to 3 man-days per unit.
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