About tower crane torque limiter with 4 limit switches, each play a role, thank you
Lifting weight limiter: limit maximum lifting weight;Torque limiter: limit the maximum lifting torque;Height limiter: limits the maximum and minimum position of the hook lifting and lowering;Amplitude limiter: limit the lifting trolley in the boom on the outside, the inside position;Slewing limiter: limit of up to the number of rotating ring arm;
Hook top point control: when the hook to the high limit, limit action, do not continue to hook!Overload control: when the weight exceeds the overload point or amplitude exceeds the maximum amplitude or the loading rate is more than 105% when the output control, prohibit the hook lifting action and prohibit car distance to allow the car to increase the amplitude, amplitude can be damped near.
The maximum amplitude control: when the weight exceeds or prohibit increase load rate of more than 105% or greater than the maximum amplitude (amplitude limit) output control, allowing the car to be near range by car distance to increase amplitude is prohibited.Minimum range control: when the amplitude is less than the minimum amplitude (amplitude lower limit), the output control allows the car to move to a distant range, i.e., to increase
