Danfoss PVG 100, Техническая информация

Страница: 29 / 76

Flow vs. LS margin @ maximum spool shift
0
50
100
150
200
250
300
350
l/min
5 10 15 20 25 bar
W
ork
P
or
t F
lo
w
LS Margin
P301 788
"F" Spool
"E" Spool
"H" Spool*
"G" Spool*
"D" Spool
"C" Spool
"B" Spool
"A" Spool
90
75
60
45
30
15
0
US gal/min
50 100 150 200 250 300 350
[psi]
*With PVG100 High Flow body and spool
C
Caution
Because of flow forces, cylinder differential areas, Danfoss recommends LS margins under 25 bar [360
psi].
As noted above, work port flow is dependent upon the LS margin set on the pump. PC pumps maintain a
constant discharge pressure which is equal to the PC setting on the pump. Hence the LS margin for PC
pumps can be thought of as the difference between the PC setting and the load pressure. Therefore work
port flow will change with load pressure, thus, pressure compensated flow will not be obtained.
PVG 100 pressure drop for PVB, basic module
Pressure drop PVB at max. main spool travel
l/min
A/B
Q
V310 203.C
US gal/min
Q
A/B
psi bar
0
p p
100
200
300
400
500
600
700
800
900
D D
A/B T max spool travel
40 80 120 160 200 240 280 320 360 400 440
PVG 100
30
0
10
20
40
50
60
60 0 30 105 45 75 15 90
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A = 40
B = 65
C = 100
D = 130
E = 150
F = 180
G = 210
H = 240
A
B
C
E
D
F
G
H
Technical Information
PVG 100 Proportional Valve Group
Technical characteristics
© Danfoss | May 2018 520L0720 | BC00000039en-US0502 | 29