WORLD OF INDUSTRIES 06/2018 (RU)

ackground: fotolia
Mitsubishi Electric’s new safety PLC
conforming to top most standards
Across industry sectors, many production applications
demand critical systems to be operational in case of a
failure to the primary CPU unit. Catering to this
demand, Mitsubishi Electric’s modular PLC series
‘Melsec iQ-R’ is now available as a fully redundant pair
of controllers for high performance and extra reliability.
It offers a complete duplicate PLC rack with all modules,
which the primary set will switch-over to
instantaneously. It also integrates various features into
the PLC for monitoring safety. The programming
platform, GX Works3 integrates both process and
safety-control programming in one environment. This
enables the execution of integrated process- and
safety-control programs with a single CPU module,
eliminating the time and cost associated with
purchasing and installing a separate safety controller.
Mitsubishi has added another layer of protection to the
basic architecture of the iQ-R, which provides process
integrity and dependability. It includes a SIL2-process
CPU module and a separate SIL2-function module as a
set, sitting alongside the power supply module. This
ensures continuous operation by switching to standby
operation if an error occurs in the control system.
Aluminum acts like steel, with Nord’s
innovative surface treatment
Nord’s ‘nsdtupH’ surface treatment is an outstanding
anti-corrosion treatment for gear units, smooth
motors, frequency inverters and motor starters in
aluminium cast
housings. It’s
special method
makes the
surface corrosion-resistant
and
harder; in this way, aluminium behaves like stainless steel with
regard to corrosion protection. It is not a coating, but a surface
treatment that creates a protective layer which is permanently
bonded to the substrate material. Any damages that occur remain
locally restricted and do not propagate. The surface is easy to
clean and largely resistant to acids and alkalis. The ‘nsdtupH’
drive units are a robust and durable alternative to painted geared
motors or stainless steel versions. Nord drives with nsdtupH
comply with FDA Title 21 CFR 175.300 and for this reason are
suitable for food application. The nsdtupH surface treatment is
advantageous for all drives used under extreme environmental
conditions and for hygienically critical applications including the
food, beverage and pharmaceuticals industry.
www.nord.com
eu3a.mitsubishielectric.com
R+W is expanding its servo disc pack couplings offering
by adding the SCL range
PRODUCTS
Servo drives are used for high precision and dynamic motion,
especially in automation equipment, packaging machinery and
industrial robotics. Shaft couplings for these applications must
be correspondingly inertia-reduced, must provide misalignment
compensation, and operate with a high degree of precision.
The company, R+W has decades of experience in this area
with its precision bellows couplings, and will now be expanding
its offering by adding its new SCL range; consisting of a
zero-backlash disc pack coupling with light weight aluminum
clamping hubs – designed for lower torques. The servo disc pack
coupling is suitable for dynamic drive tasks involving frequent
stop-start and reversing operations, where the focus is on
absolute positioning accuracy. Their
hubs are made of aluminum, thus
have low weight and low moment of
inertia. The disc packs themselves are
made of high-strength stainless steel
and feature a high degree of power density. No micromovements
are generated in the discpack connection, which
translates to higher torsional stiffness. The shaft-hub connection
is only available in a friction-locked format with a clamping
hub, split clamping hub or conical clamping hub.
www.rw-couplings.com
26 WORLD OF INDUSTRIES 2018