Parker PQDXXA-Z10 - Page 27

27
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
Q:CORR (Correction of the pumps volumetric efficiency):
Thisparameterdescribesthecompensationofthepumpsvolumetricefciencyandbuildsalinearcor-
rection function vs. pressure which output is added to the Q-command signal. The Q-controls variable
limitation is thereby still 100%.
The usage of ramp functions (Parameter AQ:UP, AQ:DOWN) is recommended.
Recommended values for Q:CORR:
Druck p [bar]
Q:CORR [%]
Q:CORR
eta_vol
100
99
98
97
96
95
94
93
92
0 100 200 300
0
1
2
3
4
5
6
7
8
Pressure [bar]
Example Illustration Q:CORR, ηvol vs. p
Frame size Pump displacement
[cm
3
/rev.]
System pressure
[bar]
Q:CORR
[0,01%]
1 16 350 1223
1 20 350 933
1 23 350 770
1 28 350 710
2 32 350 877
2 40 350 610
2 46 350 593
3 63 350 887
3 80 350 733
3 92 350 453
4 140 350 693
4 180 350 530
5 270 350 350
6 360 350 303