The PLC in this electrical control system is from the Siemens S7 – 200 series for control.
The hoisting mechanism uses an ATV71 frequency converter for speed regulation, with digital control and closed – loop vector control. The gantry mechanism and slewing mechanism adopt resistor – in – series speed regulation.
The MQ600A elevated gantry crane in Caofeidian
Electrical control system for the JMG3540 container gantry crane in Guangdong
This system employs a full variable – frequency control method. Hoisting mechanism: It uses the closed – loop vector control mode for speed regulation, with a Yaskawa CIMR – G7A4160 frequency converter. Trolley mechanism: The open – loop V/F control…
Electrical control system for the MQ4035 portal crane in Daxie, Ningbo
This electrical control system is controlled by the C200H series PLC from Omron (Note: The correct spelling is Omron) Corporation in Japan. The hoisting mechanism is driven by two wound – rotor asynchronous motors. The transmission solution involves connecting resistors…
The JMG3540 container gantry crane at the Old Huangpu Port Terminal
This system adopts a full variable – frequency control method. The hoisting mechanism is driven by a CIMR – G5A4300 frequency converter, using speed and torque control with vector technology. The gantry mechanism is driven by a CIMR – G5A4055…
Electrical control system for the 750t/h overhead grab ship unloader at the industrial port of Wuhan Iron and Steel Group
There are a total of eight ship unloaders in this project. The entire machines are equipped with Siemens 6SE70 multi – drive systems, which adopt an energy feedback mode, eliminating the need for braking resistors. Two parallel rectifier/feedback units are…
Design, manufacturing and commissioning of the electrical control system for the 600T fixed crane of Shanghai Fuxing Shipping Co., Ltd.
This system mainly consists of the main hoisting mechanism, auxiliary hoisting mechanism, and luffing mechanism. The ABB ACC600 series frequency converters are used for driving, and the frequency converters are shared by the dual – main hoisting and luffing mechanisms.…
Design, manufacturing and commissioning of the electrical control system for the 600T ship unloader of Huasheng Tianyuan
The electrical control of this machine adopts the ABB ACS800 series full – variable – frequency system. This machine is equipped with two sets of mechanisms: the support mechanism and the opening – closing mechanism. Each set of mechanism consists…
Electrical control system for the 40.5t – 40m gantry crane in Guangdong
This system adopts a full variable – frequency control method. For the hoisting mechanism, the closed – loop vector control mode is selected for speed regulation, and the Yaskawa CIMR – G7A4160 frequency converter is used. For the trolley mechanism,…