140CRA93200 Frequency Conversion Technology

140CRA93200 Frequency Conversion Technology

140CRA93200 process professional set compressor network normal outlet pressure for P1, and the actual measured pressure on the scene for P2, according to the ΔP (= P2 – P1) value size by the PLC within the PID function module to carry out PID operations, control the frequency converter to change the motor speed, to achieve the required pressure. When ΔP>0, the site pressure is high, then increase the frequency converter output frequency, so that the motor speed to speed up, increase the actual wind pressure; when ΔP <0, the site pressure is low, then make the speed down, ΔP decrease. This constant adjustment, so that ΔP tends to 0, the actual pressure at the scene fluctuations in the vicinity of the set pressure, to ensure pressure stability.

140CRA93200 compressor running for a long time, resulting in the gap between the components become larger, which causes vibration will become larger and larger, easy to cause damage to the components of the compressor. By PLC on the vibration of the scene to judge and analyze the situation, the compressor can be planned maintenance in advance, which can greatly extend the service life of the equipment, improve the feasibility of equipment operation, reduce equipment failure caused by unscheduled stop.

140CRA93200 process requirements
(1) In the normal production process, 2 compressors should be at least 1 running, even when switching between each other, do not allow the phenomenon of two machines all stop.
(2) Keep the compressor outlet pressure at a predetermined value.
(3) Enable analysis of compressor operating status for predictive maintenance.