Parker PQDXXA-Z10 - Pressure Sensor and Horse Power Settings

25
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
The Linearization is only active at TYPE P. Due to pressure valves hysteresis only ascending or
descending pressure functions can be optimized.
P_SENSOR (Pressure sensor end range):
Setting of pressure sensor end range in bar. This parameter is base for the scaling of the sensor with
the parameter P_NOMINAL.
P_SENSOR is by default set to 600 bar.
For the control options UDM, UDF, UDQ (old: UPM, UPF, UPQ) the 600 bar sensor
(PVACMS, SCP01-600-24-06) is used as standard.
P_NOMINAL (Pressure sensor scaling):
Setting of pressure sensor scaling in bar. This parameter determines the upper limit for the pressure
sensor signal.
 Changingthisparametermaycausenegativeeffectstoyoursystem.Anewadjustmentofthe
pressure valve solenoid limitation (Parameter CP:MINV and CP:MAXV) might be necessary!
In case of running the pump with a PVACRE***K42 as pilot pressure valve, this parameter has to
besetto420bar.Anewadjustmentofthepressurevalvesolenoidlimitation(ParameterCP:MINV
and CP:MAXV) might be necessary!
The parameter P:NOMINAL shall match the pressure pilots end range.
P_CORR (differential pressure setting, compensator):
Setting of the differential pressure in bar.
The factory standard setting of the compensator differential pressure is 15 bar.
 P_CORRneedstobeadjustedto0barincaseofinstallingthepressuretransducerinthepumps
outlet.
The differential pressure is a numerical constant, which is added to the sensor pressure signal all
of the time. If the pump acts in displacement control, the constant is added as well. The system
pressure equals in this case actual pressure (XP) minus P_CORR.