1, Load feature
(1) PID function is required.
(2) There is a pressure sensor in the system.
(3) In theory, if the running frequency is H1, then
Energy Saving = 1-(H1/50)3
2, Requests for frequency inverters (VFD)
(1) Soft start the motor, reduce the surge current.
(2) PID control should be stable and accurate.
3, Typical wiring diagram
Start / stop by external signal (If necessary)
PID target value set by F9-01
Set suitable value depend on system
F09.50 ~ F09.52
Set suitable dormancy and wake up parameters.
(1) select a suitable pressure sensor, the calculation of Fb-01 as below if the pressure sensor measure range is 16bar (1.6Mpa), and the target pressure is 5bar (0.5Mpa), then F10.01=5/16*100%=31.3%.
(2) Maintenance regularly, pay attention to dust and humidity prevention.