Parker PQDXXA-Z10 - Page 31

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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
CQ:MINVA / CQ:MINVB (Dead band compensation – displacement control valve):
CQ:MINVA Dead band compensation solenoid A in mA.
CQ:MINVB Dead band compensation solenoid B in mA.
The dead band compensation is only reasonable for displacement valves with 2 solenoids.
The valves offset, parameter CQ:FF needs to be set to zero “0” when using a displacement control
valve with two solenoids.
The dead band compensation needs to be aligned to the parameter OFFSETQ.
CQ:MAX:VA / CQ:MAXVB (Nominal current –displacement control valve):
CQ:MAXVA Nominal current to solenoid A in mA.
CQ:MAXVB Nominal current to solenoid B in mA.
TRIGGER Q (Threshold for command signals):
The response delay describes a kind of dead band (in 0,01% of full scale) to compensate unwanted
command signal changes (e.g. ripple in the command signal) and command signal noise.
This parameter is only active with SOLENOID = 2.
OFFSETQ (Adjustment of Q-valves hydraulic neutral point)
AdjustmentoftheQ-valveshydraulicneutralpointin%.ApositiveinputisactstosolenoidA,anegative
acts to solenoid B.
Input
100%
10 V
Output
MAX
MIN
TRIGGER