Operator’s Manual
18
6. SYSTEM FUNCTIONS
6.1 Warning
Under any below conditions, HC3901 LMI system will light up and send out alarm for warning.
The crane is overload
The hook approaching height limitation
System error
6.2 Prohibition
Cooperating with crane electrics system, the LMI system will send alarm warning and any of the
following crane’s movements will be prohibited:
Boom luffing down
Hoisting up
At this moment, only the movements toward safe direction are allowed:
Boom luffing up
Hoisting down
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