Inverter Upgrade – Posco Steel Vietnam
- Project LocationKCN Phú Mỹ, TP. HCM (Bà Rịa - Vũng Tàu)
- Project NameRenovation and upgrade of the shore crane lifting control system
Project Information
The Cau Bo lifting system uses 2 ACS800 frequency converters (discontinued) to synchronously control the position of 2 winch motors. Song Nguyen has replaced the new model ACS880 frequency converter, reinstalled the control program and changed the PLC program communication address to connect to the frequency converter.
Other projects
The original system used DC motors with high maintenance costs, expensive and rare spare parts. Song Nguyen consulted and supported the conversion from DC motors to AC motors, helping the factory save on maintenance costs and spare parts for DC motors as well as DC drives.
The factory required the installation of an inverter for the overhead crane. Song Nguyen conducted a survey, provided consultation, and installed the Yaskawa GA700 inverter for the factory’s crane to enhance system efficiency and protect the motor.
The system using Bonfiglioli inverter often had problems during operation, Song Nguyen consulted and replaced it with Yaskawa inverter for the factory.
The factory needed to replace a damaged Fuji inverter. Song Nguyen conducted a survey, inspected the issue, and installed a Yaskawa E1000 inverter as a replacement. After the inverter replacement, the factory’s system operated smoothly and efficiently.
The system was using an old Danfoss VLT5000 inverter model that has been discontinued, leading to high maintenance costs and a shortage of replacement parts. Song Nguyen conducted a survey, provided consulting, and replaced it with a Yaskawa A1000 inverter, helping the system operate more stably, reduce costs, and improve operational efficiency.
The old pump system required an additional pump. Song Nguyen conducted a survey, provided consultation, and installed the additional pump system, including a new pressure alternating control panel and remote control. After the installation, the pump system operated smoothly and efficiently.
The factory is facing the problem of old HMI, no longer visible and temporarily stopped production. Song Nguyen came to survey and upgraded to the latest Mitsubishi HMI and edited the interface to be larger, clearer and easier to operate.
The old motor was running with a variable frequency drive at 35Hz. After Song Nguyen installed the Permanent Magnet (PM) motor and adjusted the speed accordingly, the result was a 24% reduction in electricity consumption.