Road Switch - Danfoss PVED-CLS User Manual

ENGINEERING TOMORROW
Name
Cut-off valve
monitoring POST time- P3078 U16
out
7.1.2

Road switch

A road switch sub-system can be used for bringing the PVED-CLS and OSPE or PVED-CLS and EHPS valves into a state
which is suitable for on-road operation while keeping the PVED-CLS operational
state. PVED-CLS displays the Road-
stee
The PVED-CLS can remain powered in the safe on-road state. The OEM is responsible for building architecture suitable
for achieving the correct SIL/PL/AgPL-level for shutting off the EH-steering flow for public road transportation.
For more information regarding the requirements for the architecture and additional components, please see Danfoss
document, PVED-CLS Safety Manual.
P3241 indicates if a road switch is connected to the PVED-CLS. The road switch functionality will only function correct
if the following parameters are set correctly:
Parameter
P3072
P3241
P3242
Important
Not all combinations of these 3 parameters are valid. If an invalid condition is detected by PVED-CLS, it will enter safe state
and notify the operator about an invalid EEPROM configuration of the Peripherals sector. See truth table in Table 11.
P3072 Present
P3241 Present
P3242 Enabled
Valid
Combination
Description of parameter
Cut Off Valve Activation TimeOut for COV Monitoring feature while
x10mSec entering Off Road state.
INFO: Setting this parameter to 0 will bypass off-road safety check
please refer to PVED-CLS communication protocol, for more details.
Description
Cut-off valve present.
0 = not present (EHPS)
225 = present (OSPE/EHI)
Road switch present(connected to AD3)
255 = present.
Road switch resistance check.
255 = enabled (EHPS)
0 = disabled (OSPE/EHI)
Not Present
Present
Present Present
Enabled Disabled
NO YES YES
Table 9
Default value
Main controller
0/255
255
255/0
Table 10
Not Present Not
Present Present
Present Not Not
Present Present
Disabled Enabled Enabled
YES NO
Table 11
Range
OEM 0 1000
Lock-out status for EH-
Safety controller
0/255
255
255/0
Present Not
Present
Not Not
Present Present
Disabled Disabled
NO YES
900 S
-
YES