W.E.S.T. Elektronik POS-123-P-PFN, Техническая документация инструкция

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Page 32 of 53 POS-123-P-PFN 31.03.2021
5.6.5 ACC (Current loop auto adjustment)
Command Parameter Unit Group
ACC X x= ON|OFF -
POWERSTAGE
Operation mode of the closed loop current control.
ON : In automatic mode PPWM and IPWM are calculated depending on the PWM-frequency.
OFF : Manual adaption by the user is necessary.
5.6.6 PPWM (P gain of the current loop)
5.6.7 IPWM (I gain of the current loop)
Command Parameter Unit Group
PPWM X
IPWM X
x= 0… 30
x= 1 … 100
-
-
POWERSTAGE
The PI current controller for the solenoid control is parameterized with these commands.
A higher P-gain increases the dynamic of the closed current loop and so its influence on the dither. The I-gain
should only be changed if having detailed knowledge about the current control.
CAUTION : These parameters should not be changed without adequate measurement facilities and
experience. Changes are only possible if ACC is set to OFF.
If the PWM frequency is < 250 Hz, the current controller dynamics must be reduced.
Typical values are: PPWM = 1... 3 and IPWM = 40... 80.
If the PWM frequency is > 1000 Hz, the default values of PPWM = 7 and IPWM = 40 should be selected.