Electricity + Control March 2017

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ROUND UP
Safety light curtains and grids
In all applications with dangerous areas re-
quiring finger, hand and operator protection,
the small and powerful safety light curtains
and light grids from ifm are the first choice.
The main differences of the versions from
the OY series are the resolution and the pro-
tected area height.Various functions such as
range and restart are configured directly on
the unit, no PC required. A t-slot on the back
allows simple and reliable mounting using
the supplied mounting material.The various
accessories make low-cost and efficient use
easier.The OY type curtain comes in a very
small housing being 28 mm x 30 mm in size
and can be installed without dead band. Se-
lectable ranges are available fromup to 20m
for light curtains and up to 60m for light grids
with easy tried-and-tested M12 connection.
Applications include:
Hand and finger protection − for light
curtains type OYxxxS, an effective pro-
tection is reached by the small distances
between light beams starting with 14 mm.
Typical applications are presses, pick-and-
place machines or handling machines. For
hygienic areas, versions with protection
rating IP 69K is required.
Blanking – blanking suppresses individual
light beams or up to three neighbouring
light beams. Floating blanking even allows
different beams to be suppressed
Muting – The temporary automatic muting
function allows feeding or products to the
dangerous area. Part numbers: OYxxxS;
muting relay: G2001S
Safety in hygienic material resistance in
cleaning processes with steam and high-
pressure cleaners is reached by the enclo-
sure of the safety light grid in a protective
tube IP 69K with integrated heating protec-
tion against fogging. Part number: OY4xxS
Enquiries or
email
CONTROL SYSTEMS + AUTOMATION
Next step in
photoelectric sensing
The OID with time of flight technology (PMD
− Photonic Mixer Device) combines the
following advantages: long range, reliable
background suppression, visible laser light
and high excess gain. In the same price range
as standard sensors, it is a clever alternative.
The switch point can be set easily by turning
the setting ring (easy turn). A scale shows the
distance set. The switch point can thus be
set before installation. As an alternative the
version without setting ring, settable IO-Link
features the high protection rating IP69 K.
Reliable detection of polished, matt, dark or
light objects independent of the colour. The
unit allows any angle of incidence and thus
flexibility of mounting.This simplifies instal-
lation and saves costs. Some applications for
these sensors include detection of yoghurt
pots and position detection of workpiece
carriers in series
connections.
Enquiries: Email