Bosch Rexroth VT-MSPA -2X Series - Block Circuit Diagram VT-MSPA2-2 X

20/36 Commissioning
Bosch Rexroth AG, Valve amplifier VT-MSPA, RE 30232-B/08.2020
8.2 Block circuit diagram VT-MSPA2-2X
XH1
X2A
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
0V
+24V
+U
KBA
tt
tt
t
tt
tt
I
A
I
A –
I
B
I
B
t
KBB
KBA KBB
MO
-U
U
U(I)
U
U
U
U
ab
U
U
U
U
+In
-In
DI
-Out
+Out
G
x
y
B
S
G
PWM
PID
PWM
PID
B
S
G
Enable
Enable
Logic
Actual
value
Supply
voltage
Command
value
Digital input
Ready for
operation
Test jack
Cable break
Cable break
Enable
1 Power supply unit 2 Differential amplifier 3 Command value summator
4 Zero point adjustment 5 Inversion 6 Simple ramp
7 4-quadrant ramp 8 Command value attenuator 9 Characteristic curve generator
10 Current regulator
11 Clock pulse generator 12 Output stage
13 Enable or inversion or ramp off or
4Q ramp
14 Switching logic/error detection 15 Digital output