The actual application case of the Knapsack frequency converter in air compressor
1、The actual application case of the Knapsack frequency converter in air compressor
Client ：Kuangzhou××Machinery Co., Ltd.
Model of the frequency converter：NZS0075T4B ( 7.5 kW, 380V)
The control system takes output pressure as control object. The
closed loop constant pressure control system consists of inverter,
pressure sensor and motor. The pressure value can be set directly by the
operating panel. The field pressure is detected by a sensor, converted
to 4 ~ 20mA current signal and then feed back to inverter. The inverter
performs PID calculation to adjusting its output frequency for the
purpose of constant pressure control and energy-saving of air
compressor.
2、Basic function code setting:
P101=2，P104=0,P106=25，P107=12，P108=12，P212=2940，P300=1，P301=5，P317=29，P320=30，P325=30，P600=1，P604=5，P605=10，P606=3，P611=40，P612=30，P613=80，P619=1,P621=2,P629=16,P000=7
Our products have the following characteristics: Waterproof,
dustproof, PID inset, constant pressure water supply, very suitable used
in the working conditions of the air compressor, by the change of the
converter software, we can remove the converter Controller and save the
cost.
3、Application examples as shown in figure:
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