Protection System for Engine Propulsion Control Lever

Triple protection – physical, operational, electrical – ensures lever reliability in harsh sea states.

1. Physical Environmental Protection (against harsh marine environment)
1）Water and dust ingress protection: Products typically achieve IP56 protection rating.
2）Corrosion resistance: The housing is made of aluminium alloy or stainless steel with surface treatment such as plastic spraying or polyester powder coating.
3）Vibration and shock resistance: Internal structure is reinforced and designed to comply with IEC 60945 and other applicable standards.
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2. Operational Safety Protection (to prevent misoperation and accidents)
1）Anti‑misoperation design: Detents and damping are provided to give clear tactile feedback.
2）Logic interlocking protection: Interlocking between multiple levers prevents conflicting commands.
3）Emergency and redundancy design: Critical sensors employ a dual‑channel independent scheme, so that one channel can still function in the event of failure.
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3. Electrical and Signal Protection (to ensure stable signal transmission)
1）Electromagnetic compatibility (EMC): A metal shielding enclosure is used to resist complex electromagnetic interference onboard.
2）Communication reliability: CAN bus digital communication is preferred, offering better anti‑interference performance than analogue signals.
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4. Applicable Standards
1）IEC 60945 – General requirements for maritime navigation and radio‑communication equipment.
2）Classification society certifications – ABS, BV, CCS, DNV, etc.