User Manual

8/12 Bosch Rexroth AG
VAC Valve Control System
RE 95 350/03.06
VACB
• RC4-4/20 controller with AS/VACB application software
with 52-pin mating connector
• Maximum 3 controllable valves
• 1 digital output signal
• Input signals from maximum 3 joysticks
• 4 solenoid outputs for current-controlled PWM currents
• 2 solenoid outputs for open-loop controlled PWM currents
A total of 6 outputs for proportional solenoids for 3 axes in
two directions each
Figure 3: Typical configuration of the VACB valve control system
#
#
Joystick
Direction switches A/B
Compression factor
Safety switch 1
Switched input
Limit switches A/B
Variable or fi xed
displacement pump
Switched output
CAN-bus
interface
Safety
switch 2
RC4-4 controller
with VACB software
Error lamp
DRE A/B
Connections for each
movement axis
Control block
SB 12 LS or
SB 23 LS or
SP08 or
M4–12/15/22 with DRE02 or
M6–15/20/22 with DRE02 or
M7–20/22 with DRE04