Parker PQDXXA-Z10 - Page 34

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Digital Pump Control Module
Series PQDXXA-Z10
Installation and Setup Manual
Bulletin HY30-3255-INST/UK
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump&MotorDivisionEurope
Chemnitz, Germany
DFREQ:P (Dither Frequency)
Dither frequency of the pressure control valve in Hz.
DAMPL:P (Dither Amplitude)
Dither amplitude of the pressure control valve in 0,01% of the current.
The Dither can be set with Dither amplitude and Dither frequency.
The below mentioned value for Dither amplitude and frequency should not be changed
when using a PVACRE***K**!
DFREQ:p = 60
DFREQ:p = 400
PWM:Q (PWM Frequency)
PWM frequency of the displacement control valve in Hz.
PPWM:Q (P gain)
P gain of the solenoids control (displacement control valve).
IPWM:Q (I gain)
I gain of the solenoids control (displacement control valve).
PWM:P (PWM Frequency)
PWM frequency of the pressure valve solenoid in Hz.
PPWM:P (P gain)
P gain of the solenoids control (pressure control valve).
IPWM:P (I gain)
I gain of the solenoids control (pressure control valve).
ATTENTION!
PPWM and IPWM parameter are influencing the Dither settings. This parameter should not
be changed after the Dither optimization.
The solenoid control parameter are optimized for the usage of PVACRE***K** as pressure
valves or PVCMD1FB*** respectively PVCM*PV** as displacement valve. This parameter
should not be changed if using these valves!