Definitions and Abbreviations.....................................................................................................................................................8

Reference Documents.................................................................................................................................................................... 8

Introduction to Electrohydraulic Steering...............................................................................................................................8

EH steering valve.........................................................................................................................................................................8

EHPS steering valve piloted with electric actuator PVE and/or steering unit....................................................... 9

PVG 32 Proportional valve....................................................................................................................................................... 9

PVG 100 Proportional valve.....................................................................................................................................................9

PVED-CL........................................................................................................................................................................................10

Steering Possibilities..................................................................................................................................................................... 10

Input Devices/Controllers......................................................................................................................................................10

Programs......................................................................................................................................................................................10

Interface Overview.........................................................................................................................................................................10

Application Examples...................................................................................................................................................................10

Wheel Loader............................................................................................................................................................................. 10

Tractor...........................................................................................................................................................................................11

CAN Interface...................................................................................................................................................................................12

Bus Architecture Considerations.........................................................................................................................................12

Power-up..................................................................................................................................................................................... 12

CAN-bus Sensor Power-up Synchronization.................................................................................................................. 12

CAN-bus Protocol..................................................................................................................................................................... 12

PVED-CL Input Interface ........................................................................................................................................................12

Output Interface .......................................................................................................................................................................12

Battery...........................................................................................................................................................................................12

Actuator Position Sensor....................................................................................................................................................... 13

Functional Options Overview....................................................................................................................................................13

Safety Considerations...................................................................................................................................................................14

On-road Operation...................................................................................................................................................................14

Vehicle Speed Sensor..............................................................................................................................................................14

Closed-loop Operation........................................................................................................................................................... 14

Analogue Input Sensors (Joystick or Wheel Angle Sensor).......................................................................................14

Risk assessment.........................................................................................................................................................................15

Configuration and Adjustment.................................................................................................................................................16

Parameter Tuning Process.....................................................................................................................................................16

Changing Default Parameters................................................................................................................................................... 16

System Parameters...................................................................................................................................................................16

Steering Device Parameters..................................................................................................................................................16

Program Parameters................................................................................................................................................................17

Indexing Parameter................................................................................................................................................................. 17

Reading and Writing Parameters............................................................................................................................................. 18

Program Transition Control........................................................................................................................................................19

System State............................................................................................................................................................................... 19

Select Program/Program Transition........................................................................................................................................19

Program Transition Acknowledge........................................................................................................................................... 19

How does the PVED work?..........................................................................................................................................................19

Electronic Control Unit........................................................................................................................................................... 20

Solenoid Valve Bridge............................................................................................................................................................. 20

Control Principle....................................................................................................................................................................... 20

Inductive Transducer, LVDT (Linear Variable Differential Transformer)............................................................... 21

Integrated Pulse Width Modulation.................................................................................................................................. 21

LED................................................................................................................................................................................................. 21

Technical Data.................................................................................................................................................................................22

Installation........................................................................................................................................................................................ 23

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