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Proportional spool valve
Proportional spool valve

Proportional spool valve with integrated electro-
nics and spool position control with LVDT NG6
ISO 4401-03
Flange construction
◆ direct operated
◆ Q = 50 l/min
max
◆ Q N max = 40 l/min
◆ p = 350 bar
max

DESCRIPTION APPLICATION
Direct operated proportional spool valve with 4 connections in Proportional spool valves are perfectly suitable for demanding
5-chamber system. With the integrated spool position sensor tasks due to the high resolution, large volume flow and low hystere-
(LVDT), the actual position of the spool is continuously recorded sis. They are used where good valve–to–valve reproducibility, easy
and made to follow the transmitted command value. By means of installation, comfortable operation and high precision are very
this internal position control, a minimum hysteresis and excellent important. The integrated controller reliefs the machine control
dynamic characteristics are assured. The Plug & Play valves are and operates the axis (position, angle, pressure, etc.) in a closed
factory set and adjusted and have therefore a high valve-to-valve control loop. The applications are in the industry as well as in the
reproducibility. With protection class IP67 for the electronics, the- mobile hydraulics for the smooth control of hydraulic actuators.
se valves are suitable for harsh environmental conditions. Some examples: control of the rotor blades of wind generators,
Proportional to the electronically transmitted command value, the forestry and earth moving machines, machine tools and paper
spool stroke, the spool opening and the valve volume flow increase. production machines, simple position controls, robotics and fan

The control takes place via an analogue interface or a fieldbus control.
interface (CANopen, J1939 or Profibus DP). The parameterisation
takes place by means of the free of cost parameterisation and
diagnostics software «PASO» or via fieldbus interface. The USB
parameterisation interface is accessible through a screw plug.
«PASO» is a Windows program in the flow diagram style which
enables the intuitive setting and storing of all variable parameters.
The data remain saved in case of a power failure and can also be
reproduced and transferred to other DSVs. As an option, these
valves are available with integrated controller. As feedback value
generators sensors with voltage or current output can be connec-
ted directly. The available controller structures are optimised for
applications with hydraulic actuations.

SYMBOL
Symmetrical control Meter-in control
ACB-S ADB-V

A B A B
0
a 0 b a b
a b a b
P T P T

ELECTRICAL SPECIFICATIONS ACTUATION
Protection class IP67 with suitable mating connector and Actuation Proportional solenoid, wet pin push
closed housing cover type, pressure tight
Ramps Adjustable Connection Via device receptacle
Parameterisation Via fieldbus or USB
Supply voltage 24 VDC
Note! Exact electrical specifications and detailed description
of «DSV» electronics can be found on data sheet
1.13-76.

www.wandfluh.com Illustrations are not binding Data subject to change 1/6 Edition: 18 12 1.10-82 E
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