Moog D680 Series - Page 39

39Rev. C, April 2017
TECHNICAL DATA Moog D680 Series Proportional Control Valves
SIZE 10 - D685 PROPORTIONAL VALVE
39
TECHNICAL DATA
Rev. C, April 2017
Moog D680 Series Proportional Control Valves
SIZE 10 - D685 PROPORTIONAL VALVE
Typical Characteristic Curves
Flow signal curves at Δp
N
= 5 bar(75 psi) per land, rated
flow 1,500 l/min (394.7 gpm)
B T
A
Y
D
V
P15
20 40 80 1000
0
1,600 (423)
1,400 (370)
1,200 (317)
1,000 (264)
400 (106)
200 (52.8)
800 (211)
600 (159)
Signal [%]
Flow rate [l/min (gpm)]
60
Spool version A: <±3 % overlap, linear flow characteristic
Spool version D: ±10 % overlap, linear flow characteristic
Spool version Y: <±3 % overlap, dual gain flow characteristic
Spool version V: ~20 % overlap, dual gain flow characteristic
Step Response Frequency Response
With pilot valve D633, rated flow 1,500 l/min (394.7 gpm)
100
75
0 30 4010 605020 70
50
25
0
Time [ms]
Stroke [%]
70 bar
(1,000 psi)
140 bar
(2,000 psi)
With pilot valve D633, rated flow1,500 l/min (394.7 gpm)
10 %
25 %
90 %
0
3
0
-30
-60
-90
-120
-150
-12
-9
-6
-3
Amplitude ratio [db]
Phase lag [degree]
Frequency [Hz]
1 2 3 54 10 20
30 50