d26
z22
z24
z26
z28
f2
b30
b32
d22
d20
U/I
U
U
U/I
U
U/I
U
b10
b6
b2
b14
b12
b8
b4
b16
U/I
d18
z10
z20
f4
f6
f8
f10
DC
DC
z30
z32
Ua1
/Ua2
f8
f10
f12
f14
/Ua1
Ua2
/Ua0
f16
Ua0
f18
d6 d8
d10 d12
d14
d16
d4
d2
U/I
U
d30
U
U
d32
X2
X1
U
U
b26
OUT3
U/I
U
b18 b20
U/I
U
b22 b24
GND
-10V
OK
+10V
CLK +
DATA –
CLK –
DATA +
+U
0 V
B
2a
2b
1
4
6
7
7
7
8
9
9
9
3
3
5
11
12
10
10
f30
f28
f32
CAN Gnd
CAN L
CAN H
CAN
Data +
Data –
d24
d28
6/10
VT-HACD-DPQ
| Digital control electronics
Bosch Rexroth AG
, RE 30146, edition: 2013-10
Block diagram
SSI
encoder
IN
CR
encoder
F
eedbac
k selection
P
osition f
eedbac
k
SSI
IN
CR
IN 5
Pr
essur
e f
eedbac
k
IN 2
IN 3
IN 4
IN 5
V
elocity command value
IN 6
Jog mode
K
eep injection
Holding pr
essur
e and
bac
k pr
essur
e
Decom
pr
ession
V
elocity
contr
oller
P
Pr
essur
e
contr
oller
PID
O
VERRIDE
Digital
output contr
ol
Er
ror
de
tection
Measuring
soc
ke
t
L
imits
Contr
ol spool
confi
guration
Gain
L
imit +
L
imit –
Off
se
t
A
O1 val
ve output 1
A
O2 (pr
ocess / diagnosis)
A
O3 (diagnosis)
Analog actual posi-
tion value AI5
Pr
essur
e command
value AI1
Actual pr
essur
e value
FB 1 AI 2
Int
er
nal mold pr
essur
e
FB AI3
Actual pr
essur
e value
FB 2 AI4
V
elocity command
value AI6
Bac
k pr
essur
e DI1
Aut
o DI2
S
tar
t holding pr
essur
e DI3
Injection/jog+ DI4
Incr
emental home DI5
P
o
st-r
e
traction/jog- DI6
Analog injection DI7
Analog: Command value DI8
Enable
Shield
Sy
st
em GND
1
Analog in
puts,
voltage or cur
rent
2a
SSI encoder
2b
Incr
emental encoder
3
Enable and digital in
put
4
Se
tting analog in
puts
5
Int
er
nal pr
ofi
le
6
F
eedbac
k selection
7
Contr
oller
8
Contr
ol spool confi
guration
9
Analog outputs (v
oltage or cur
rent)
10
OK output and digital outputs
11
CAN int
er
face, op
tional
12
L
ocal bus
DO1 A
CTU
AL v
elocity pr
ofi
le
DO2 signal er
ro
r
DO3 bac
k pr
essur
e
DO4 injection
DO5 r
e
traction com
ple
te
d
DO6 injection pos. r
eac
hed
DO7 pr
essur
e r
eac
hed
Int
er
nal pr
ofi
le
selection
