Danfoss PVED-CLS, User Manual, Page: 35 / 182

© Danfoss | August 2018 AQ00000211 |
35
ENGINEERING TOMORROW
Hydraulic and peripherals Config
7.1 CUT-OFF VALVE
The cut-off valve is an essential part of OSPE, EHi-E and EHi-H valve sub-sustems and an integral part in many of the
safety functions included in the PVED-CLS.
The integrated cut-off valve spool (COV) can obtain two states, blocked and open. The COV is piloted by the cut-off
solenoid valve, which is activated by applying power to the cut-off coil.
The COV spool will be in:
•
blocked state, block the EH flow to the steering cylinder and block the hydraulic pilot supply pressure to the
PVED-CLS pilot supply connection and instead connect the PVED-CLS pilot supply connection to tank.
•
opened state, connect EH flow to the steering cylinder and lead hydraulic pilot pressure supply to the PVED-
CLS pilot supply connection.
Figure 13
Recommendation
If the PVED-CLS is mounted on a Danfoss OSPE, EHi-E or EHi-H valve, Danfoss insistently recommends that P3072:
Cut-off valve present is set to 255 (Present) .
Important
• For more details and wiring schematics, please referrer to the PVED-CLS Safety Manual.
• If the PVED-CLS is mounted on a EHPS valve,
P3072: Cut-off valve present must be set to 0 (Not present) ,
as the EHPS valve does not have a cut-off valve. If P3072: Cut-off valve present is set to any other value than 0
(Not present) , the PVED-CLS enter safe state.
7.1.1 Cut-off valve control