User Manual

2/12 Bosch Rexroth AG
VAC Valve Control System
RE 95 350/03.06
Ordering code
Type
Application software
AS/
Software
Electronic valve control system
VAC
Variant A
Valve control system of 1 axis (only in combination with RC2-2/20)
A
Variant B
Valve control system of up to 3 axes (only in combination with RC4-4/20)
B
Variant C
Valve control system of up to 4 axes (only in combination with RC6-9/20)
C
Version
10
AS/ VAC 10
Ordering Information
The AS/VAC application software must only be operated with
the RC2-2/20, RC4-4/20 or RC9-9/20 controllers and other
add-on components (see page 5). When placing an order, the
hardware and software ordering codes should be linked by a
“+”.
Example: RC2-2/20+AS/VACA
Note
A description of variants A, B and C can be found beginning
on page 6.
Method of operation
The electronic valve control system (Valve Control, VAC) is a
fl exible software and hardware package for controlling valves in
a control block.
The hydraulic system consists of a fi xed or variable displace-
ment pump, a control block and the actuators in the form of
hydraulic motors or hydraulic cylinders.
The control block controls the speed at which machine parts
move in working hydraulics. In the control block, valves de-
termine the speed and direction of the movement. Up to four
valves in a control block can be controlled independently of
each other. Each valve controls one movement axis and two
movement directions.
The electronic valve control system is designed to actuate up
to four valves in the open hydraulic circuit with electro-propor-
tional control.
The following control blocks are supported:
• Directional valve SB 12 LS (see catalog 1 987 760 512)
• Directional valve SB 23 LS (see catalog 1 987 760 513)
• Mobile control block SP08 (see catalog RD 64 139)
• High-pressure LS-control blocks M4 in sizes
– 12 (see catalog RE 64 278)
– 15 (see catalog RE 64 282)
– 22 (see catalog RE 64 279)
each with proportional pressure reduction valve DRE02 (see
catalog RE 58 032)
• High-pressure LUDV control blocks M6 in sizes
– 15 (see catalog RE 64 284)
– 20 (catalog on request)
– 22 (see catalog RE 64 286)
each with proportional pressure reduction valve DRE02 (see
catalog RE 58 032)
• LUDV control block M7 in sizes
– 20 (catalog on request)
– 22 (see catalog RE 64 295)
each with one proportional pressure reduction valve DRE04
(see catalog RE 58 038)
The analog valves are controlled via the proportional outputs of
the controller.
The CAN valves (SB 12 LS and SB 23 LS) are controlled via
the controller's CAN-bus interface.