Danfoss PVED-CLS Data sheet

Data Sheet

Steering Valve Controller

PVED-CLS on OSPE

Electrohydraulic Steering

The PVED-CLS Steering Valve Controller is an application specific valve controller for the Danfoss steering valve family. The PVED-CLS offers integrated flexible software-based electrohydraulic steering functionality which can be tailored to any off-road vehicle type by software parameterization. The PVEDCLS also works as a certified Safety Controller.

System Integration

Users integrate and develop the electro-hydraulic steering system by adjusting typically 20 parameters with a CAN bus based service and diagnostic tool. Danfoss offers a graphical-based tool ( PLUS+1® Service Tool).

Safety

Safety functions for electrohydraulic steering are integrated and designed to

•SIL2 (IEC 61508)

•PL d (ISO 13849) and

•AgPL d (EN 16590)

•AgPL e for roading mode can be achieved by additional circuitry (hydrostatic steering only)

Features

•Mount on OSPE, EHPS, EH valves

•User-programmable steering functionality

•Use for front-, rearor articulated steered vehicles

•Category 3 safety architecture (dual microcontroller)

•12 pin DEUTSCH DT connector

•CAN based Wheel Angle Sensor input

•9 to 32 Vdc power supply operation

•5V Power supply for external sensors (250mA)

•2 CAN 2.0B ports, baud rate (250Kbit/s)

•1 high-side switch output (9 to 32Vdc, 2A@12Vdc) (e.g. for OSPE cut-off valve control)

•1 LED for operational mode indication

•Designed for SASA steering wheel sensor

•Prepared for steering devices with tactile feedback (AUX steering)

•Functional safety conforms to IEC 61508, ISO 13849 and EN 16590 (ISO 25119:2010 modified)

•Fail-silent electrohydraulic steering principle

•Suitable for safety architecture categories 2 and 3

•Safe on-road mode (SIL 3/AgPL e, electronics powered, and EH steering depowered)

•Main safety functions

‒Safe state: Redundant shutting-off the electrohydraulic steering flows (system fall-back hydrostatic OSP steering)

‒Trip to safe state when vehicle speed > safe speed threshold

‒Trip to safe state by unintended steering motion or other malfunction

‒Safe on-road mode

L1309911 | AI00000222en-US0102 | 1

Data Sheet

OSPE with PVED-CLS

Product highlights

Two Microcontroller-Units (MCU) execute the configurable electrohydraulic steering functionalities such as:

•Integrated safety functions

•Auto-steering (ISO 11783)

•Fast steering (Variable steering ratio)

•Speed dependent characteristics

•AUX interface

‒Joystick steering

‒Electric Mini-wheel

•Flow ramping for Jerk elimination for articulated vehicles

•Steering wheel anti-drift control

•MMI CAN bus interface

•KWP2000 CAN service protocol

•J1939-73 Diagnostics

Comprehensive technical literature online at powersolutions.danfoss.com

L1309911 | AI00000222en-US0102

+ 2 hidden pages