Auto-Calibration - Danfoss PVED-CLS User Manual

ENGINEERING TOMORROW
When using the Direct Output Control function in the PVED-CLS, all safety functions are disabled. The user
has to be a skilled operator and must be aware that using this functionality can lead to sudden steering
movements!
9.3

AUTO-CALIBRATION

If an OEM does not want to develop their own auto-calibration routine, the PVED-CLS offers a build-in auto-calibration
function, which can be invoked from the PLUS+1 SERVICE TOOL or an external tool by using the service CAN messages.
The auto-calibration is divided into two separate calibration routines; one for the WAS and one for the spool.
As per default, the PVED-CLS will boot up in WAS calibration service mode if, depending on the WAS interface type
(P3244), the corresponding counter-parameter and bit inverted counter-parameter are set to 0 and 255, respectively.
Name
WAS interface type P3244 U8
Spool dead-band
P3771 U8
Calibration counter
Bit inverted value for
Spool dead-band P3772 U8
Calibration counter
Analogue WAS
P3773 U8
calibration counter
Bit inverted value
Analogue WAS P3774 U8
calibration counter
CAN based WAS
P3775 U8
calibration counter
Bit inverted value for
CAN based WAS P3776 U8
calibration counter
Prioritization is as follows:
1. A. If P3244 is set to 0, P3773 is set to 0 and P3774 is set to 255, the PVED-CLS will boot into WAS calibration
1. B. If P3244 is set to 1, P3775 is set to 0 and P3776 is set to 255, the PVED-CLS will boot into WAS calibration
service mode.
2. If the conditions of 1A and 1B are not fulfilled and P3771 is set to 0 and P3772 is set to 255, the PVED-CLS will
go into spool calibration service mode.
3. If the conditions of 2 are not fulfilled the PVED-
Description of parameter
Wheel Angle Sensor Interface Type
dec
Valid Values: 0 (ANALOGUE); 1 (CAN)
dec Spool dead-band Calibration counter
dec Bit inverted value for Spool dead-band Calibration counter
dec Analogue WAS calibration counter
dec Bit inverted value Analogue WAS calibration counter
dec CAN based WAS calibration counter
dec Bit inverted value for CAN based WAS calibration counter
Table 28
Range
OEM 0 1
OEM 0 255
OEM 0 255
OEM 0 255
OEM 0 255
OEM 0 255
OEM 0 255
.
0
0
255
0
255
0
255