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POS-123-*-2030
7.8.7
ACC (Current loop ato adjustment )
Command
Parameter
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.
7.8.8
PPWM (Solenoid current controller P element)
7.8.9
IPWM (Solenoid current controller I element)
Command
Parameters
Unit
Group
PPWM
x
IPWM
x
x= 0… 30
x= 4… 100
-
-
EXP
The PI current controller for the solenoids is parameterized with these commands.
CAUTION
: These parameters should not be changed without adequate measurement facilities and
experience.
Attention
, if the parameter ACC is set to ON, these adjustments are done automatically.
If the PWM frequency is < 250 Hz, the dynamic of the current controller has to be decreased.
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 chosen.
