Calibrating Analogue Wheel Angle Sensor - Danfoss PVED-CLS User Manual

ENGINEERING TOMORROW
Calibration counter -
P3771 U8
Spool calibration
Bit inverted value for
"Calibration counter - P3772 U8
Spool calibration"
Calibration counter -
Analogue WAS P3773 U8
calibration
Bit inverted value for
"Calibration counter -
P3774 U8
Analogue WAS
calibration"
Calibration counter -
P3775 U8
CAN WAS calibration
Bit inverted value for
"Calibration counter - P3776 U8
CAN WAS calibration"

16.5.2 Calibrating analogue wheel angle sensor

The following description explains how to manually calibrate analogue wheel angle sensors. The procedure consists
of three main steps:
1. Read sensor values and sensor supply voltage
2. Data sector preparation
3. Write parameters to PVED-
Procedure:
Read sensor values and sensor supply voltage

Put PVED-

Start ADC readout on CAN bus
o
For MAIN- and SAFETY-controller, start status message 1 @ 100ms
o
For MAIN- and SAFETY-controller, start status message 3 @ 100ms

Turn wheels into far left angle position
o
For MAIN- and SAFETY-controller, read AD1 and AD2 and temporarily store the two values

Turn wheels into neutral/straight position
o
For MAIN- and SAFETY-controller, read AD1 and AD2 and temporarily store the two values

Measure sensor supply voltage (only needed if the 5V Sensor supply compensation is enabled (P3217 set to
255 and P3219 set to 255)

Turn wheels into far right angle position
o
For MAIN- and SAFETY-controller, read AD1 and AD2 and temporarily store the two values
dec Calibration counter - Spool calibration
dec Bit inverted value for "Calibration counter - Spool calibration"
dec Calibration counter - Analogue WAS
dec Bit inverted value for "Calibration counter - Analogue WAS"
dec Calibration counter - CAN WAS
dec Bit inverted value for "Calibration counter - CAN WAS"
Table 74
OEM 0 255
OEM 0 255
OEM 0 255
OEM 0 255
OEM 0 255
OEM 0 255
0
255
0
255
0
255