Program Information Mobile Hydraulics, Mobile ... - ERGOVIAL

82 Mobile Electronics
6
Interfaces for Mobile Electronics
U Pumps, motors and valves
with proportional or switched
electrohydraulic control can be
controlled directly from the
outputs of the mobile electronic
units
U Integrated electronic units in
hydraulic components are
preferably controlled via the
CAN bus or analog voltages
U Such input devices as joysticks
and foot pedals deliver setpoints
in the form of input
signals which are processed
by control units, amplifiers or
integrated electronic units.
Hydraulics
Electronics
Here too, major advantages are
obtained by using the CAN bus
instead of analog voltages, such
as the reduced wiring effort
and extended diagnostic capabilities
U Other input signals for control
units or amplifiers are delivered
by a whole variety of sensors.
Signal transmission with
analog voltages or currents
frequently yields the advantage
of unlimited speed for real-time
control functions, although
the CAN bus can also be used
occasionally
Man – machine interface Mechatronics
Control
panels:
display
keypad
Pumps Motors Valves Integrated
electronics
Integrated
sensors
Setpoint
input
devices:
joystick
foot pedal
Amplifiers Control
units
ECU
System interface CAN bus
Sensors:
speed
pressure
force
position
angle
External
electronics:
diesel engine
PLC
Software Standard software and specific application programs
Application software
BODAS programming system
Parameterization with the PC software BODEM
Software development
Commissioning/service
U Control panels with display
and push-buttons are separate
digital computers communicating
with the control units
via CAN bus
U In addition, the CAN bus permits
communication between
several control units responsible
for different tasks in the
overall system (drive control,
working functions, diesel fuel
injection, PLC functions and
others)
Technical data of the CAN bus
ISO/DIN 11898 (high speed)
CAN specification 2.0 B active
Data rate 50 kbit/s – 1 Mbit/s
SAE J1939 protocol
Customized protocols