Danfoss PVED-CLS, User Manual

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96 | © Danfoss | August 2018 AQ00000211
ENGINEERING TOMORROW
11.1 BLOCK DIAGRAM
11.1.1 Open loop mini-wheel
Fast steer and EFU Anti jerk Soft-stop
Flow to spool
position conversion
SVC Filter
Figure 47
11.1.2 Open loop joystick
Anti jerk Soft-stop
Flow to spool
position conversion
SVC
Speed dependent
flow Scaling
Filter
Figure 48
11.1.3 Closed loop joystick
Speed dependent
WA limit
Speed dependent
closed loop control
Flow to spool
position conversion
SVC
Balancing joystick
position offset
Figure 49
11.2 AUX CONFIG
Since the AUX functionality contains both mini wheel functionalities and joystick functionalities, the appropriate AUX
functionality needs to be selected, by setting the parameter P3240.
When using auto-guidance functionality, a transition to AUX-program is performed by disengaging the auto-guidance
functionality if:
11.2.1 AUX Joystick Config – Open Loop Mode
If the parameter P3240 is set to Analogue Joystick or open loop joystick or Elobau Joystick i.e. to function in
open loop fashion. Then the PVED-CLS will perform a transition to AUX-program if the conditions specified in
section 3.6.2 for ‘
AUX open loop device’ are met and parameters for selected joystick type are configured
correctly ( Please see sections 11.8 and 11.9 for parameter configuration of analogue and open loop joystick and
section 11.12.4 for elobau joystick) .
Important
The system cannot contain two analogue sensors at the same time, meaning that WAS and Joystick cannot both be
analogue in the same system hence if analogue joystick is selected then P3244, i.e. WAS Interface, must not be set to
analogue.
11.2.2 AUX Joystick Config – Closed Loop Mode
To use the AUX steering device in close loop mode,
•
The auxiliary steering device shall be present in the system i.e. parameter P3239 is set to TRUE
and
•
The auxiliary steering device is a closed loop joystick i.e. the parameter P3240 must be set to 1
and
•
The auxiliary steering device is enabled in MMI messages (see PVED-CLS communication protocol
for more details on MMI message)
and
•
The enable flag available in the AUX message-byte 5 is set to 01 (see PVED-CLS communication
protocol for more details on AUX message)
and