1756-L61A Servo Motor

1756-L61A Servo Motor

1756-L61A According to the operation mode of hoist and the inherent characteristics of coal mining enterprises, the application of plc in the control system of domestic mine hoisting machinery and electronics is also developing rapidly. However, from the point of view of on-site use, at present, plc is mainly used to deal with switching quantities in the control system of domestic coal mine hoist to replace the numerous relays, contactors, complicated wiring and signal display system in the old hoist control system, and the analog quantity and automatic adjustment process in the braking system involving the safe operation of the hoist.

1756-L61A involved in the safe operation of the hoist braking system in the analog and automatic regulation process, mostly still through the use of semiconductor devices, operational amplifiers, such as adjustable gate and silicon controlled power braking of the ordinary electronic mode to deal with, the main control unit programmable controller (plc) design, by a cpu226 host and two pieces of i/o expansion module em223 and em222 Composed of a cpu226 host and two i/o expansion modules em223 and em222, the design contains 40 input points and 40 output points.

1756-L61A often appear in the process of using zero drift, electronic component damage, and there are maintenance and re-commissioning is difficult, poor reliability and other shortcomings, thus making the reliability of the elevator electronic control system is reduced. In view of the above problems, in-depth study of coal mine hoist control system with plc control is very necessary.