User Manual

Mobile Hydraulics Bosch Rexroth AG
Dual Path Control DPC
RE 95 325/03.04
7/16
Parameter Setting and Diagnostics
The parameters which have to be set for commissioning the
DPCA dual path control system can easily be adjusted with the
BODEM PC software.
For fault diagnosis and troubleshooting, the main process vari
-
ables and error messages can be displayed with BODEM.
Instead of BODEM, you can also use the BB-3 control panel
for defining parameters and diagnostics.
Components Required
The following electronic components are are required:
• RC6-9/20 control unit with mating connector (RE 95200)
• AS/DPCA software, Version 10
• HG405GF/11-S joystick
• IDR speed sensor (RE 95130) with mating connector
• HDD speed sensors (RE 95135) with mating connectors
• WS1 angle sensor (RE 95140) with mating connector
• Switch for external start release
The following hydraulic components are required:
• Variable displacement pumps with appropriate control unit
A4VG…EP (RE 92003) or
A10VG…EP (RE 92750)
• Variable displacement motors with appropriate control unit
A6VM…EP (RE 91604) or
A6VE…EP (RE 91606) or
A10VM…EP (RE 91703)
The following items are required for commissioning and
service:
• Diagnostics socket (RE 95085)
• BODEM PC software with BODEM connecting cable
(RE 95085), or
• BB-3 control panel with BB-3 connecting cable (RE 29798
and RE 95080)
Variant DPCB/C
The electronic dual path control system DPCB/C allows you to
control the driving and steering behavior of hydraulic dual path
drives of pavers.
Variants B
and C use the same hydraulic configuration for
controlling.
Variant B
:
• Two variable displacement pumps A4VG or A10VG with
electro-proportional (EP) control, combined with two variable
displacement motors A6VM, A6VE or A10VM with electrical
two-point actuation (EZ) for the travel drive
Variant C
:
• Two variable displacement pumps A4VG or A10VG with
electro-proportional (EP) control, combined with two variable
displacement motors A6VM, A6VE or A10VM with electrical
two-point actuation (EZ) for the travel drive
• Two variable displacement pumps A4VG or A10VG with
electro-proportional (EP) control for the additional functions
The following diesel engine configuration can be used:
• Diesel engine with or without CAN bus interface
The dual path control system receives the actual speed from
the speed sensors of the two hydraulic motors and the set
speed from the speed potentiometer (diesel engine speed
is not detected). The DPCB and DPCC variants do not
evaluate the CAN bus.
Functional Description
The swivel angles of two hydraulic variable displacement
pumps and two hydraulic variable displacement motors in the
closed circuit are varied in order to control the driving and
steering behavior.
One pump and one motor are assigned to each side of the ve
-
hicle. Steering is achieved by controlling the pumps differently.
Either transport or working speed can be selected by switching
the displacement of the variable displacement motors to one of
two values (minimum and maximum).
With variant B,
the dual path control system offers automatic
steering.
With
variant C, two additional functions, tamper and vibration,
are available. Two additional variable displacement pumps are
actuated for this purpose.
Speed and steering regulation are available for controlling the
driving and steering behavior.