Abstract
This design introduced the operation process of the lift. In accordance with the requirements of energy conservation design teaching building Mingde building automatic control of the lift. By setting the TDD slope integration time Siemens MM440 transducer to control the elevator has the speed, and by j1.1 jv tractors to carry and transfer power make the elevator running. The Siemens S7-200 series PLC as control host CPU226, and extends the S7-200 series of I/O extension module (EM223) to control the input and output, complete the elevator traction motor and frequency converter, direction, floor, according to the layer station call, capsules in operation, the safety protection command signal for management and control functions. From inside the elevator running status signals, hall, driving direction, traffic location floor integrated PLC program control internal rule.
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