Magnetic Valves Off Control; Resolving A Steering Control Conflict - Danfoss pved-cl Operation Manual

Operation Manual
PVED-CL Controller for Electro-Hydraulic Steering, Version 1.38
Steering by Low Priority Steering Device – Open Loop
Symbol
Tolsout

Magnetic Valves OFF Control

Symbol
Magnetic valves Off delay time
88 | © Danfoss | May 2016
Index
416
Magnetic valves off delay time disables the magnetic valve bridge after a time specified in ms when the
flow request is 0, otherwise it remains enabled. This parameter is used when electrical energy
consumption by the magnetic valve bridge in the PVED must be reduced or to resolve a steering control
conflict between the OSP and the PVED-CL (implementing EHPS type 1 systems only).
The default value disables this functionality i.e. the magnetic valve bridge is enabled at all times. The
magnetic valve bridge is enabled when the PVED-CL receives a non-zero flow request.
Index
415

Resolving a Steering Control Conflict

On systems utilizing a PVED-CL, an EHPS valve, an OSP, a CAN or analogue steering device but no
steering wheel angle sensor (SASA) (EHPS type 1), the PVED-CL has no means to detect that the steering
wheel is being activated. A steering conflict between OSP steering and steering device steering is thus
possible. To resolve this conflict, set Tolsout to a value (typically 50 ms – 200 ms) to disable the magnetic
valve bridge when no flow request is being commanded with the steering device.
Default
10 000
Default
30 000
Value range
1 to 30 000 (ms)
Value range
1 to 30 000 (ms)
11025583 | AQ00000216en-US0302