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 operator takes
the vehicle 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 for the OEM, Danfoss has implemented an option for the operator 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
Road switch in
ON-ROAD position
Supply
Gnd
Supply
Gnd
Figure 51
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
validation switch position
Fault
(enter safe state)
+ Pin1
- Pin2