Bosch Rexroth VT-VSPA2-1-2X/V0/T5 - Page 57

4/10 Bosch Rexroth AG Hydraulics
Additional information RE 30110-Z/10.12
Block diagram / pinout VT 3000, VT 3013, VT 3014, VT 3026
i
u
u
K5
10c 10a
8a
12a 12c
K1.1
K2.1
K3.1
K4.1
R4
R3
R2
R1
+
K6
H1
H2
K3
K2
K1
H4
H3
K4
K5
K6
16a
26c
20c
2a
18a
16c
6c 6a
4a
8c
4c
18c
30a
24a
22a
28a
32a
+ U
B
26a
J5, J6
u
2,5 A T
20a
I
B
32c
X1
0 V
2200 µF
28c

10
I
A
w
8
7
7
7
6
5
43
2
S
1
=
14c
14a
t
1
+ 9 V
M0
 9 V
9
H12
H11
F F F F
1
F
S
F
F
F
F
F
X1
S
S
7
i
u
F F F F
H1 to H4 Display of the command value call-ups
H11 "power on" H12 "Ready for operation"
Ramp external
Positive command value controls solenoid "B". Negative command value controls solenoid "A".
1 Command values 2 Differential input 3; 6 Summing device 4 Ramp generator 5 Step function generator 7 Power output stage 8 Clock generator 9 Monitoring 10 Power supply
K1 to K6 Call-up relay R1 to R4 Command values t Ramp time
Command value 5 ±6 V Command value 4 ±9 V Command value 3 ±9 V Command value 2 ±9 V Command value 1 ±9 V
Differential input
Command value 6
Reference potential
Auxiliary voltage ±9 V
Measurement null (M0) is
increased by 9 V as compared
to the operating voltage!
Call-up command value 1 Call-up command value 2 Call-up command value 3 Call-up command value 4
Call-up "Ramp off"
Call-up "Switch-over auxiliary voltage"
Relay call-up voltage (+24 V)
Current command value at "w" 0 to +6 V for solenoid "A" 0 to –6 V for solenoid "B" Actual current value I
A
at "I
A
"
Actual current value I
B
at "I
B
"
Bias current
Solenoid "A"
Solenoid "A"
Solenoid "B"
Operating voltage
Bias current
Solenoid "B"
F = On front plate
Command value after ramp