The hoisting mechanism is driven by two wound – rotor asynchronous motors. The transmission scheme involves connecting resistors in series with the rotor and using eddy – current braking for speed regulation.
The luffing, slewing, and traveling mechanisms adopt variable – frequency control. The luffing and traveling mechanisms share the C1MR – G5A4037 frequency converter from Yaskawa in Japan, while the slewing mechanism uses the CIMR – G5A4075 frequency converter from the same company.
The PLC used is from the C200H series of Omron in Japan. The fault monitoring system consists of the PLC and a GP – 2500S touch screen, creating a user – friendly human – machine interface.
Note: There might be a typo in “C1MR – G5A4037”. It’s likely supposed to be “CIMR – G5A4037” like the other frequency converter model references.
Design, manufacturing and commissioning of the electrical control system for the MQ4025CZ portal crane at Chizhou Port
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,…