Moog ACV with CANopen bus interface
7 Servo valve functions
Control modes
B99224-DV018-D-211, Rev. A, October 2018
129
7.1.3 Spool position control open loop for single stage valves
The spool position open loop mode is selected by setting the parameter <ControlMode> (0x6043) to 1 (spool
position control open loop).
Figure 46: Spool position control open loop for single stage valves
Chapter "7.1.1 Object 0x6043: Control mode", page 128
Chapter "7.2.1 Object 0x6310: Demand value", page 136
7.1.4 Spool position control open loop for dual stage valves
The spool position closed loop mode is selected by setting the parameter <ControlMode> (0x6043) to 2 (spool
position control closed loop). This open loop setting only affects the main stage. The pilot valve remains in
spool position closed loop at all time.
Figure 47: Spool position control open loop for dual stage valves
Chapter "7.1.1 Object 0x6043: Control mode", page 128
Chapter "7.2.1 Object 0x6310: Demand value", page 136
u
T
P
B
A
<ActualValue1...4>
(0x6110...0x6113)
<
P
rs
D
em
a
nd
V
al
ue
>
(0
x639
0)
<
S
p
lDe
m
andV
alue>
(0x63
10)
<Dem
a
ndV
a
lu
eP
ilot>
(0x3
300
)
S
pool pos
ition (Q) /
pres
sur
e (p
)
sw
itc
ho
ver
s
u
Pressure actual
value path
Pressure
demand value
generator
#P
re
ss
ureS
et
point#
Spool position
demand value
generator
#S
po
olP
os
iti
on
S
e
tpoint
#
Pressure
controller
<C
on
tr
ol
le
rO
ut
pu
t>
(0x24
18)
Pressure
demand sign
Spool position
controller
p
u
p
p
u
Analog inputs
This control mode is meant to be used only for commissioning or diagnostic purposes.
The signal #SpoolpositionSetpoint# is an internal signal only. It links the signal from the spool po-
sition setpoint value path to the spool position demand value generator.
Chapter "6.2.3 Spool position setpoint value path", page 59
T
P
B
A
<ActualValue1...4>
(0x6110...0x6113)
<P
rsD
em
andV
al
ue>
(0x63
90)
<
S
pl
Dem
andValue
>
(0
x6
310)
<De
m
andV
al
ueP
ilot
>
(0x33
00)
Spool po
sition (
Q
)
/
pressu
re
(
p)
swi
tchove
r
s
u
Pressure actual
value path
Pressure
demand value
generator
#P
ressu
re
S
etp
oin
t#
Spool position
demand value
generator
#Spo
olPos
iti
on
S
etp
oin
t#
Pressure
controller
<Co
nt
ro
ller
O
ut
put>
(0x2
41
8
)
Pressure
demand sign
Spool position
controller
u
p
u
p
p
u
Analog inputs
This control mode is meant to be used only for commissioning or diagnostic purposes.
The signal #SpoolpositionSetpoint# is an internal signal only. It links the signal from the spool po-
sition setpoint value path to the spool position demand value generator.
