Prerequisites
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The SU90 system is turned off. |
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The circuit breaker for the 3-phase AC power is closed. AC power is connected. |
You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electronic and electromechanical tasks. This includes different screwdriver types, pliers, spanners, a cable stripper, a soldering iron, etc. Each tool must be provided in various sizes. We recommend that all tools are demagnetized to protect your equipment.
Context
The Phase Watch Relay K303 is located at the right side of the Motor Control Unit. LED L1 indicates that the Phase Watch Relay K303 is activated. This mean that the 3-phase voltage is applied, and that the three phases are correctly connected with regard to the rotation
direction of the hoisting motor.
WARNINGHigh voltages are used. This equipment must be serviced only by qualified personnel familiar with high-voltage equipment and the potential hazards
involved. Failure to observe this precaution could result in bodily injury.