the CDQ engineering hoist inverter main terminal control

The 100t the CDQ engineering hoist inverter main terminal control, and communications functions as read drive data use. so I chose to use a rectifier the feedbacks unit RGU with feedback capability to supply power to the common DC bus, The inverter device control terminal control mode, the communication is only used as a way of reading frequency device status. Walk the line inverter default two speed, improve inverter default third gear speed, lifting and traveling at different speeds depending on the stage given select. The inverter starts, direction and speed selection signal is given by the relay.

the brake is controlled by the inverter itself. Lifting of the laptop battery running frequency conversion device vector control with speed sensor, speed control with good accuracy and stability. The start braking performance, reducing start braking time conducive to adapt to the requirements of the production rhythm. by the completion of the field devices exchange of data between the CPU and communication.The upper set one engineer station and operator station to communicate with the host computer via Ethernet and the next crew. Hoist part of the main program control sequence control and interlock control.

4 control system
Control system using ABB's Freelance 2000 distributed control system, which combines the advantages of distributed control systems and programmable controllers, both have good man-machine interface, fast sequential logic control functions. Configuration tool application is simple, flexible, simple operation on the screen, clear thinking, easy to operate control hardware installation and maintenance simple and quick. Notebook battery Freelance 2000 distributed control system can be divided into operating level and communication level, the process level and engineer level, a different part of a different role.

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