User Manual

Mobile Hydraulics Bosch Rexroth AG
Dual Path Control DPC
RE 95 325/03.04
5/16
Safety Functions
Various options are available for monitoring travel behavior:
• Start condition and safety switch
The start condition is used to prevent the drive from starting
unintentionally.
After the control unit is switched on (ignition switch turned
on), the joystick must be in the neutral position in order for
the drive to be started.
To acknowledge faults, the joystick must be placed in the
neutral position.
An additional, external safety switch must be operated in
order to travel.
• Monitoring of inputs and outputs
The wires for the setpoint inputs and proportional solenoid
outputs are monitored for cable breaks and short-circuit.
In the event of a fault, or if the emergency stop switch is
operated, the drive is turned off immediately.
During backwards travel, a warning device is actuated via a
switching output.
Important Features
• The setpoints for travel speed, travel direction and steering
are defined by means of a joystick.
• An integrated synchronization control for controlled straight
line driving keeps the speed ratio of the left and right drives
constant.
• An integrated load limiting control prevents overload of the
diesel engine when the hydraulic power is increased.
• There is an integral operating hours meter.
• During backwards travel, a reverse travel warning device is
actuated.
• A brake control is integrated.
• The travel behavior is monitored by safety functions such as
start condition and an external safety switch.
• The inputs and outputs of the control units (such as the joy-
stick and accelerator pedal) are monitored (for cable breaks,
short circuit). In the event of a fault, or if the emergency stop
switch is operated, the drive is stopped immediately.
• Any faults that occur are logged in the control unit and can
be read later using the BODEM diagnostic tool or BB-3 in
plain text.
Main Parameters
• Diesel engine data (set speed and actual speed via sensor,
number of teeth on starter ring gear)
• Potentiometer for set speed of diesel engine
• Joystick for travel direction and steering (dead band, accel-
eration behavior, steering behavior, braking parameters)
• Configuration (load limiting control, synchronization control,
setpoint repeat function)
• Minimum and maximum magnet current for pumps forwards
and backwards as well as hydraulic motors