The frequency conversion of 4.4 loops fan is controlled

In anneal process, the atmosphere inside furnace differs along with process and differ. The rotate speed that plays circular fan in different medium and different temperature circumstance realizes gearshift control by Japanese Fuji transducer. Try check and test and verify through relapsing, this frequency conversion controls means to satisfy the craft requirement of anneal process.

The interference rejection in 4.5 data processing

The electromagnetism interference that the frequency conversion control that wait causes fan of the high-power in industrial spot environment is stronger, can bring about the instantaneous that measures signal to be not true wave motion, may be aiguille even pulsatile, cause control system to be not stabilized. Be necessary so to the measurement of process signal undertakes interference rejection is handled. Hardware respect, the signal that uses interference rejection inputs pattern plate, use the wiring means of interference rejection; The defer when those who control software to undertake signal of out of tolerance to collecting the real time signal that come is short handles ground of utmost of in an attempt to to eliminate all sorts of interference signal.

5 Last word

Since steel wire tall hydrogen overspreads equipment of type annealing furnace and control system to be used at was being thrown in June 2003, equipment performance is reliable, use convenient, moving stability, control effect is good, gained better economic benefits and social benefit, each function index achieves steel wire giving heat manufacturing level, satisfy user requirement.