Danfoss PVED-CLS, User Manual, Page: 88 / 182

88 | © Danfoss | August 2018 AQ00000211
ENGINEERING TOMORROW
Figure 42
The range is from 1° to 160° for P3568, in steps of 1°. For P3569 the range goes from 0% to 100% in steps of 1%.
The values recommended by Danfoss are P3568 set to 20 and P3569 set to 15 i.e. anti-drift will be enabled all the time
and 15% of the full flow will be added or deducted, depending on direction, to the calculated ideal ccm per revolution-
output, when the difference between the measured steering wheel position and the actual position of the wheels is 20° -
160° (due to Point B and Point C’s coordinates). When steering wheel angle difference is > 160°, linear interpolation,
between Point C and the fixed point D, will determine the anti-drift correction volume. Furthermore, anti-drift function
will also improve consistency in lock-to-lock on steering wheel.
Important
If anti-drift is not required, the function can be disabled by setting P3569 to 0.
Name
A
ddr
es
s
D
at
a t
yp
e
U
ni
t
Description of parameter
U
se
r
Range
D
a
nf
o
ss
de
fa
ul
t
val
u
e
S
a
fet
y
cri
ti
ca
l
p
a
ra
m
et
ers
‘
S
’
Mi
n
.
M
ax.
STW anti-drift - Max
steering wheel drift
correction
P3568 U8 Deg
The difference between the observed and ideal STW steering angle at
which and above which the max. EFU correction ("STW Anti-drift - Max
flow correction") shall be applied.
OEM 1 160 20
STW anti-drift - Max
flow correction in
percentage of full flow
P3569 U8 % Max flow correction which can be requested by the EFU algorithm OEM 0 100 15
Table 38
Point A
Point B
Point C
Point D
0
5
10
15
20
25
30
35
40
45
50
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
An
ti-
dri
ft
c
orre
ct
io
n
[% o
f ma
x f
lo
w
]
|Steering wheel angle difference [degrees]|
STW - Anti-drift (EFU)