What does the crane main make the controller do?
The main controller is the control unit that crane operator (commonly known as a crane driver) is used to operate manually in the driver's room. The main controller is installed on the platform, the handle part is exposed on the table, the control component parts are in the interlocking box body (prevent the operator's electric shock). Is the role of the main controller driver signal the running speed of the corresponding institutions, through a cable to the agency's control cabinet (or control panel), by the controller to control motor speed corresponding mechanism, thus the purpose of the complete crane control. Most of the main controllers have a set of gear (using CAM assembly principles), and they have a gear (for example, sliding resistance type and photoelectric code type etc.). According to the specification, the control must have a self-locking function to prevent the wrong operation. The master controller has a variety of specifications and types, so I won't go into that.
The crane main makes the controller action: make the action instruction to operate the crane. Orders of crane main controller is the use of the main controller action instruction, make the magnetic force to control panel of each corresponding contactor action, to change the circuit, the control motor hoist according to the running state of the corresponding to complete various crane lifting work, as the main controller and the control circuit of the magnetic force to control panel is complex, use components, cost is high, so generally used in the following circumstances:
The motor capacity is large and the CAM controller is not enough. (2) the frequency of operation is high, and the number of passes per hour is close to or more than 600 times. (3) the crane is heavy and the operation is very frequent, and the requirement of reducing the driver's labor intensity requires the higher life of the electrical equipment. (4) the crane requires better speed adjustment, point motion and other operation performance.
