彩涂机组电气设备有哪些特点

彩涂机组属于连续生产线，和其他连续生产线类似，彩涂机组电气设备包括供配电系统、传动系统、PLC 控制系统、计算机系统和检测仪表。

由于彩涂机组正常运行时有些电机工作在电动状态，有些工作在发电状态，所以通常传动系统采用整流(或整流回馈单元)+公共直流母线+逆变器方式，既简化线路，又有明显的节能效果。彩涂机组的PLC 控制除了完成常规的顺序、逻辑控制外，还完成全线的速度协调控制、张力控制、活套位置控制、涂层厚度控制、固化炉燃烧控制和固化炉内板带的垂度控制、板带尾部定位控制等。计算机系统包括具有远程控制、在线监视、故障诊断和报警等功能的 HMI 画面系统、工程师站、配置档次高些的彩涂机组还包括二级计算机系统，主要完成生产和质量的管理。彩涂机组的检测仪表除了工艺段的清洗和固化炉以及被压站的一些常规温度、压力、液位仪表外，还包括一些特殊专用仪表。

The color coating unit belongs to continuous production line, similar to other continuous production lines. The electrical equipment of color coating unit includes power supply and distribution system, transmission system, PLC control system, computer system and detection instrument.

Because some motors work in the electric state and some in the power generation state during the normal operation of the color coating unit, the drive system usually adopts the mode of rectifier (or rectifier feedback unit) + common DC bus + inverter, which not only simplifies the circuit, but also has obvious energy-saving effect. In addition to the conventional sequence and logic control, the PLC control of the color coating unit also completes the speed coordination control, tension control, looper position control, coating thickness control, curing furnace combustion control, strip sag control and strip tail positioning control of the whole line. The computer system includes HMI screen system with functions of remote control, online monitoring, fault diagnosis and alarm, engineer station, color coating unit with higher configuration level, and secondary computer system, which mainly completes the management of production and quality. In addition to the cleaning and curing furnace in the process section and some conventional temperature, pressure and liquid level instruments in the pressurized station, the detection instruments of the color coating unit also include some special instruments.