FIELD: materials handling facilities. SUBSTANCE: system has boom lift angle sensor, boom length sensor, load mass sensor and digital computer. The latter is designed for calculating critical parameters, comparing them with tolerable data and providing the crane operator with current information basing on information received from input/output device. System has also sound information transmitter, control relay unit, decoder connected to indicator and information processing device. System has second information processing device, crane turnable slewing angle pickup and roll angle transmitter. Inhibit panel and inhibit signal interlock device are connected to input/output device. First information processing device has additional inlet to which temperature sensor is connected. Boom lift angle sensor, boom length sensor and crane turnable slewing angle pickup are connected to second information processing device. Roll angle transmitter is connected to analogue-to-digital converter. EFFECT: enlarged functional capabilities, increased reliability, safety and efficiency of control and convenience in servicing. 1 dwg
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