RE 30232-01-B, Edition 04.2020, Bosch Rexroth AG
Commissioning |
Valve amplifier VT-MSPA2-2X
19 | 36
8.1
BLOCK CIRCUIT DIAGRAM OF VT-MSPA2-2X
Fig. 4: Block diagram
1
Mains ad
ap
ter
2
Dif
fer
ent
ial am
plifier
3
C
ommand v
alue
summa
tor
4
Zer
o point ad
jus
tment
5
In
version
6
S
im
ple r
am
p
7
4-q
uadr
ant r
am
p
8
C
ommand v
alue a
tt
enua
tor
9
Char
ac
ter
is
tic c
ur
ve
gener
at
or
10
Cur
rent r
egula
tor
11
Cloc
k pulse g
ener
at
or
12
Out
put s
ta
ge
13
Enable or in
version or r
am
p of
f or 4Q r
am
p
14
S
w
it
chin
g lo
gic/er
ror de
tec
tion
15
Di
git
al out
put
16
Monit
or
in
g module V
T-MU
X
A2-2 (separ
at
e or
der)
17
Tw
o f
er
rit
e slee
ve
s (inc
luded onl
y in t
he sc
ope of de
liv
er
y of
the monit
or
in
g module)
XH1
XH2
X2A
XH2
A
B
XH1
V
1
2
10
9
5
6
12
11
Zw
-1
(1)
(2)
(5)
(11)
(12)
(10)
(12)
(10)
(9)
(9)
(7)
(6)
(8)
(14)
(13)
(15)
(4)
(3)
8
4
3
7
U
U
0
V
+24
V
(+IN) ±10
V
(–IN) 0
V
+U
KB
A
tt
tt
t
tt
tt
I
A
I
A –
I
B
I
B
t
KBB
KB
A
KBB
MO -U
U
U(I)
U
U
U
U
a
b
U
U
U
U
DI
-Out
+Out
G
x
y
B
S
G
PWM
PID
PWM
PID
B
S
G
15
14
13
16
11 12
9 10
(16)
(17)
(16)
5
6
2
1
VT
-MUXA2-2
VT
-MUXA2-2
Enable
Logic
Ac
tual v
alue
Suppl
y
volt
ag
e
Di
git
al in
put
Te
st
jac
k
br
ok
en
w
ir
e
br
ok
en
w
ir
e
Enable
Enable
Re
ad
y f
or
oper
at
ion
