Safe On-Road Mode - Danfoss PVED-CLS User Manual

ENGINEERING TOMORROW

Safe on-road mode

Controlling an OSPE, EHPS or EHi valve with a PVED-CLS is designed for off-road use only. When the vehicle is
taken from an off-road situation to an on-road situation, a common risk mitigation method is to power off the PVED-
CLS.
If powering off the PVED-CLS is not feasible, Danfoss has implemented an option to use the PVED-CLS to broadcast
wheel angle position on the CAN bus. This functionality will do a soft shut down of the PVED-CLS, to fulfill that the
PVED-CLS is active for broadcasting signals on the CAN bus, when driving on road, but no controlling of the EH is
available (hence SVB and Cut-off valve are off).
For more details on how to setup this architecture and the PVED-CLS, please see the Danfoss document, PVED-CLS
Safety Manual.
11 21
SW1 SW2
12 14 22 24
132 | © Danfoss | August 2018
Road switch in
ON-ROAD position
Supply
Gnd
Supply
Gnd
Figure 70
1
AD2
2 AD3
3 Sensor GND
4 CAN H Safety
5 CAN L Safety
6 CutOff out
7 Battery (-)
8 Battery (+)
9 CAN L Main
10 CAN H Main
11 5V sensor supply
12 AD1
COM
K1
NO
COM
K2
NO
Software
Fault
(enter safe
state)
SW1 signal
validation
Redundant data
Fault
Compari
(enter safe
son
state)
Primary data
SW2 signal Safe road
switch position
validation
Fault
(enter safe state)
+ Pin1
Pin2
-
AQ00000211