Parker PQDXXA-Z10 - MODE - Offline (PARKER EXP)

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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
CP:MINV (Trigger threshold – pressure control valve):
Trigger threshold of pressure control valve in mA.
CP:MAXV (Nominal current - pressure control valve):
Nominal current of the pressure control valve in mA.
 ItmightbenecessarytonetunethetriggerthresholdCP:MINVandthenominalcurrentCP:MAXV
to get optimal results in open loop pressure control.
6.3 MODE – Offline (PARKER EXP)
TS (Sample Time)
The sample time (in 100 µs) describes how often the signals is processed internally. The parameter TS
represents the controls cycle time and therewith controls dynamic.
Changes should be performed only if enough knowledge about the dynamic system behaviour
is available. Changing TS requires that all time depended parameters need to be checked and
possiblyreadjusted.
PMODE (Closed Loop Control Functions)
The closed loop pressure control can be driven with the MR control or with the PID control.
Currently only the PID control is supported.
PL:EFF (Mechanical Pump Efficiency)
Mechanicalpumpefciencyin0,01%.
PL:EFF is used for the calculation of the corner power and therewith the maximum of parameter
PL:PL.
PL : PL
MAX
=
(PL : EFF) • 6
[0.1 kW]
(PVSEL) • (PL : RPM) • (P_NOMINAL)
CQ:FF (Offset - Displacement Control Valve)
Offsetparameter(in0,01%)toadjustthedisplacementscontrolvalveneutralpoint.
The Offset parameter is only needed for valves with one solenoid. The parameter needs to set to
0 in case of using a valve with two solenoids .
In a control situation, the solenoid should draw approx. 60 % of its nominal current (nominal current
1,3 A; current in control situation 780 mA). Under these conditions the solenoid provides approx.
50 % of its nominal force. That leads to a similar response for on- and off stroking.
CQ:I_LIM (Integrator Limitation)
Integrator limitation of the closed loop displacement control in 0,01%.
The integrator compensates the systems nonlinearities only. Therefore this parameter should be
chosen as small as possible.
Typical value = 2500 (25 %). Depending on systems linearity this value can also be higher.