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PAM-199-P-PFN
5.6.4 PWM (PWM frequency)
Command
Parameters
Unit
Group
PWM
X
x= 60… 2941
Hz
STD 195
PWM:I
X
i= A|B
x= 60… 2941
Hz
STD 196
The frequency can be selected out of the following defined steps (60 Hz, 70 Hz, 80 Hz, 90 Hz, 100 Hz, 110
Hz, 120 Hz, 130 Hz, 150 Hz, 199 Hz, 230 Hz, 280 Hz, 336 Hz, 405 Hz, 511 Hz, 1069 Hz, 1470 Hz, 1960 Hz,
2352 Hz, 2941 Hz). The optimum frequency depends on the valve.
Attention: The PPWM and IPWM parameters should be adapted when using low PWM frequencies
because of the longer dead times which forces a reduced stability of the closed loop control.
5.6.5 ACC (Auto adaptation of the closed loop current controller)
Command
Parameters
Unit
Group
ACC
x
x= ON|OFF
-
EXP
Operation mode of the closed loop current control.
ON
:
In automatic mode PPWM and IPWM are calculated depending on the preset PWM-frequency.
OFF
:
Manual adjustment.
