FIELD: transport.
SUBSTANCE: invention relates to electrical engineering and can be used in hoisting crane control and safety systems. Cable combined line of communication between hoisting crane modules of control and safety comprises two-wire data exchange line and two-wire power supply line. Said communication line incorporates at least one galvanic isolation unit. The latter comprises digital isolator built in data exchange line and isolating DC voltage-to-DC voltage converter built in power supply line. Said galvanic isolation unit features separate supply of digital isolator from isolated power supplies of said isolated converter.
EFFECT: higher noise immunity and protection against atmospheric and static electricity.
3 cl, 3 dwg
