Custom, ergonomic joysticks
Vehicle cabins are becoming
increasingly ‘joystick centric’
with more and more of the
vehicle functions being integrated
directly onto the control handles. As
a result of this trend, joystick designers
such as Apem are facing new
challenges: how to offer an ergonomic
joystick for off-highway vehicles, which
also suit the needs of each customer
– all without
re-inventing the wheel during the
development process.
With a wide range of qualified
human-machine interface (HMI)
components, Apem, offers a huge
number of joystick configurations –
formed by combining Apem pushbutton
switches, thumbwheels, rocker
switches, miniature joysticks and
navigators. Therefore, Apem customers
can benefit from qualified and fieldproven
HMI components on standard or
72 iVTInternational.com June 2019
custom grips – all of which are
designed to match their specific needs.
For years, leading manufacturers of
construction vehicles have integrated
Apem HMI components, such as IA
switches, into joysticks. Now, Apem’s
broad range of HMI components can be
easily integrated into its new XD series
joystick, either on a standard or a
custom handle, depending on the
customer’s need.
The XD series joystick base is SIL2/
Pld-capable and has been specifically
developed for off-highway vehicles with
its shallow, below panel mounting for
easy integration. It also has an
extremely robust construction that is
able to withstand a horizontal load of
up to 1,780N.
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Robust two-way cartridges
Wandfluh has revised its existing two-way
cartridge valve program and equipped
it with higher pressure resistance.
In addition, the flow geometry has been
optimized and thus the flow rate has
been considerably increased.
The valve program comprises the
five nominal sizes – NG16, 25, 32, 40
and 50 – that cover the volume flow
range from 360 l/min (NG16) to 2,500
l/min (NG50) and switch up to 630 bar.
The cartridge valve is available as
a seat-tight directional function.
A version with a damped spool allows
the valve to close more smoothly,
resulting in lower pressure shocks
in the system.
Also available is a pressure relief
function that opens the valve at an
individually adjusted pilot pressure,
independent of the flow. The pressure can be
fix adjusted with a manually-operated valve,
or continuously variable and remote-controlled
with a proportional valve.
Two-way, built-in valves are particularly
compact logic valves for block construction.
They allow a wide range of hydraulic functions to
be realized in the smallest of spaces for
applications requiring high flows. The valves can
be installed in a cavity according to ISO 7368 and
closed with a cover in which the pilot valve is
usually installed.
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Ultra-flat, contactless
position
sensor
ASM Sensors presents
its contact-less, ultra-flat
magnetostrictive position
sensor that is ideal for use in
space-restricted applications, such
as in mobile machines or in
industrial vehicles. The Posichron
PCFP25 is an absolute, non-contact
and wear-free position sensor with
measurement ranges from
100mm-5,750mm.
The sensor system consists of a
magnetostrictive waveguide and
a moveable position magnet. The
encoder magnet can be moved
along the sensor profile without
contact. The guide distance can be
up to 19mm, depending on the type
of magnet used. The sensor is
integrated into an encapsulated
aluminum hollow profile. The
dimension of the slim profile is only
8mm in thickness. The sensor is
resistant to dirt, moisture and dust.
It can resist shocks up to 50g and it
has protection class IP67.
The profile fits exactly between
two molded profile parts. Analog
and digital outputs are available.
For safety applications the sensor
can be mounted in redundant
design. Thus, the Posichron PCFP25
sensor provides a robust tailormade
solution for narrow
construction spaces.
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