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最近,兖州煤矿机械厂采用PLC程序通过变频器内置功能对多台链斗式提升机进行控制,实现了无级调速。该控制装置主要包括3台ABB公司的变频器、三菱公司的基本单元和接触器、继电器、速度传感器、仪表等,主要功能是在现场随时调节速度值并保持3台链斗机速度一致,利用变频器内部的多种保护功能实现故障保护,发生故障时发出声光报
Recently, Yanzhou Coal Mine Machinery Factory adopted PLC program to control multiple chain bucket elevator through built-in inverter function, realizing stepless speed regulation. The control device mainly includes 3 ABB frequency changers, Mitsubishi basic units and contactors, relays, speed sensors, meters, etc., the main function is to adjust the speed value at any time and keep the speed of the three chain fighters, the use of A variety of protection functions within the inverter to achieve fault protection, audible and visual alarm occurs when a fault occurs