Danfoss PVED-CLS User Manual

150 | © Danfoss | August 2018 AQ00000211
ENGINEERING TOMORROW
17.4.2 SEHS FDA
Name
Address
Data type
Unit
Description of parameter
User
Range
Danfoss default value
Safety critical parameters ‘S’
Min.
Max.
Fault Detection
Algorithm - Steering
wheel activation
velocity threshold
P3122 U8 dRpm
Steering wheel angle velocity threshold used in the Fault Detection
Algorithm to detect the steering wheel activation
OEM 0 150 5 S
Fault Detection
Algorithm – min. wheel
angle movement
threshold
P3123 U8 IR
Minimum wheel angle difference necessary to observe in order to make the
Fault Detection Algorithm assume that the wheels are moving. The
difference is calculated between the current WA position and WA number
of loops back. Number is defined by P3124.
OEM 0 200 50 S
Fault Detection
Algorithm – wheel angle
sensor delay
P3124 U8 x10mSec
Number of loops between samples that are being compared against P3123
for WA motion determination
OEM 1 20 1 S
Fault Detection
Algorithm - Fault
confidence counter
decrease rate
P3125 U8 x10mSec
Rate at which the Fault Detection Algorithm confidence counter value
decreases if an error is no longer observed
OEM 1 10 1 S
Fault Detection
Algorithm - Fault
confidence counter
timeout
P3126 U16 x10mSec Time period for which error shall be observed by FDA to report failure OEM 0 2000 50 S
Fault Detection
Algorithm - Spool in left
position range offset
P3128 S16 x10u Meter Distance from closed loop dead-band to check if spool in left side OEM -200 200 0 S
Fault Detection
Algorithm - Spool in
right position range
offset
P3130 S16 x10u Meter Distance from closed loop dead-band to check if spool in right side OEM -200 200 0 S
Fault Detection
Algorithm - Safe state
upon a failure detection
P3132 U8 -
FDA safe state trigger Enable/Disable after failure detection.
Valid Values: 0 (DISABLE); 255 (ENABLE)
Warning
DISABLE should only be used when diagnosis of the wheel angle
sensor and SASA failure modes are ensured by anther monitoring
function or when getting initial data for FDA tuning
OEM 0 255 0 S
Fault Detection
Algorithm - Backlash
region
P3133 U8 dDeg
Backlash limit to use in the backlash filter in the FDA control algorithm
exclusively
Resolution: 1dDeg = 0.1Deg
OEM 0 200 5 S
Fault Detection
Algorithm - Vehicle
speed threshold for
EHPS
P3134 U8 km/h
Will disable the FDA and spool monitoring if speed of the vehicle goes
below this value. Should only be changed if EHPS/OSPE/EHi system is
underpowered, hence the system does not have enough pressure to move
the wheels (normally when vehicle is not moving)
OEM 0 10 0 S
Table 65

Danfoss PVED-CLS Specifications

General

Brand	Danfoss
Model	PVED-CLS
Category	Controller
Language	English