Initial Setup - Danfoss PVED-CLS User Manual

ENGINEERING TOMORROW
9.3.1

Initial setup

WAS:
The function works by having the operator capture the leftmost, rightmost and straight ahead position of the wheels.
The function will learn the relationship between the AD/CAN values of the WAS for the whole steering band (from
leftmost position to rightmost position) and scale this into an internal resolution in steps of 0.1% for the steering
(leftmost to straight ahead and straight ahead to rightmost).
Spool:
This function allows the determination of the spool dead-band based on inputs and demands from the operator.The
spool dead-band is determined (within given inputs from the operator) by measuring the duration of moving the
spool continuously from left to right.
The function is intended to be an alternative solution for spool calibration for mass production environments where
a large number of vehicles is produced and a quick automated spool calibration is needed. The function can provide
a precise dead-band calibration of the spool in a relatively short time (depending on the parameter setup) without
having an operator directly involved.
Before starting any auto-calibration, the operator should
as these are important to get the desired setup on the vehicle.
Auto Calibration Config
Name
Max allowable WAS
signal to be captured in P3791 U16
Neutral
Min voltage needed in
between the captured P3793 U16
WAS values
Min allowable WAS
signal to be captured in P3795 U16
Neutral
Max closed loop dead-
P3797 U16
band edge
Min closed loop dead-
P3799 U16
band edge
Spool calib activation
P3801 U8
timeout
Spool calib initial spool
P3802 U16
position
Spool calib +/- turn
P3804 U16
range sweep
Description of parameter
Maximum allowed signal to be captured for WAS neutral position during
mVolts
WAS auto-calibration
Determines the minimum voltage needed in between the captured WAS
mVolts values (minimum, neutral and maximum), to ensure a sufficient high
wheel angle resolution.
Minimum allowed signal to be captured for WAS neutral position during
mVolts
WAS auto-calibration
Maximum closed loop dead-band value (for both left- and right-side),
x10u Meter hence the found dead-band values needs to be in between P3799 and
P3797.
Minimum closed loop dead-band value (for both left- and right-side),
x10u Meter hence the found dead-band values needs to be in between P3799 and
P3797.
Before automatic spool calibration can be started, the operator has to
arm the steering wheel. This is to tell the PVED-CLS, that grapping the
steering wheel can be detected, and thus can be used to disengage
ongoing spool calibration.
In the operation status message, byte 4 (see PVED-CLS communication
protocol, chapter 7.10), the Spool calibration status can be observed.
- 0x21: Spool calibration inactive Steering wheel has not
been armed yet.
- 0x22: Spool calibration getting armed Operator is
dec
operating the steering wheel with a RPM > PXXXX
- 0x23: Spool calibration armed Operator has stopped
operating the steering wheel and a counter has started.
button in the PLUS+1 Service Tool or send the message
communication protocol, chapter 5.1.1) within the
counter has reached the threshold limit given by P3801 (in
seconds)
The initial spool position value, the spool auto-calibration function will
x10u Meter start at. The higher set point, the faster the wheels movement will be.
Recommend: 115 for OSPE/EHi; 200 for EHPS
This is the +/- turn range sweep where the auto-calibration function will
measure the time for when moving the spool from left to right and right
dDeg
to left.
Resolution: 1 dDeg 1 = 0,1°.
Auto Calibration Config
OEM, Dealer 0
OEM, Dealer 0
OEM, Dealer 0
OEM, Dealer 0
OEM, Dealer 0
OEM, Dealer 1
-
-CLS
OEM, Dealer 50
OEM, Dealer 5
Range
5000 4500
2500 0
5000 500
300 300
300 0
60 20
300 125
400 25