Description
Technical Specifications
- Product Model: KDU‑210
- Brand: KYMA
- Series: Marine Main Engine Speed Control Unit
- Warranty: One Year
- Input Voltage: 24 VDC nominal (18‑32 VDC marine supply)
- Operating Temperature: ‑10 °C to +60 °C
- Storage Temperature: ‑40 °C to +85 °C
- Response Time: Fast closed‑loop speed regulation <50 ms
- Protection Class: IP20 cabinet mounting, conforms to marine environmental standards
- Accuracy Class: Speed control accuracy ±0.2% full scale
- Output Frequency: Adapt to 50/60 Hz tacho‑pulse signals
- Rated Current Range: Actuator drive output 0‑200 mA
- Communication Interface: Terminal block for tacho input, actuator output, alarm relay outputs
- Supported Signal: Magnetic pickup tachometer pulse input, analogue actuator control
- Overload Capacity: Over‑voltage, reverse‑polarity protection; built‑in overspeed alarm and fault relay output
- Dimensions: 235 mm × 135 mm × 55 mm
Product Overview
The KDU‑210 is a legacy mixed analogue‑digital marine shaft speed governor controller for vessel main diesel propulsion engines. It receives pulse signals from magnetic pickup tachometers measuring crankshaft or propeller‑shaft rotation speed, performs closed‑loop regulation and outputs analogue drive signals to the fuel‑rack actuator to stabilise engine RPM under varying load conditions. It provides overspeed alarm, loss‑of‑tacho signal detection and fault relay outputs for ship alarm monitoring systems. Designed for harsh marine engine‑room environments, the unit features strong electromagnetic interference resistance and low temperature drift performance. Ship‑yard and vessel‑maintenance teams stock this spare module to restore propulsion control function for older fleets, preventing unstable speed, hunting and unexpected engine trips during navigation.
Application Scenarios
‑ Ocean‑Going Cargo Vessels: Main engine closed‑loop speed control for medium‑speed diesel propulsion plants. Maintains steady shaft speed amid wave‑induced propeller‑load fluctuations.
‑ Fishing Vessels & Tugboats: Handles highly variable load conditions during towing and trawling operations. Anti‑hunting control prevents fuel‑rack oscillation under rapidly changing torque demand.
‑ Retrofit & Refit Projects: Direct replacement for ageing original governor units on legacy vessels. Compatible with existing magnetic tacho pickups and fuel‑actuator hardware without large‑scale rewiring.
‑ Coastal Work‑Boats: Delivers reliable speed regulation in high‑vibration, high‑humidity engine‑room conditions. Fault relay outputs feed vessel central alarm monitoring systems for early fault notification.
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