The N program control
elements – in the
mushroom push button
NDTP30 – were
developed for the
requirements of the food
processing industry.
which are potentially at risk of soiling
is also reduced. The reduced number
of operating and display elements
also saves costs and improves the
operator's overview.
A completely new development is
the hygienic joystick switch of the NK
series. The NK- joystick switches offer
the machine designer completely
new possibilities in machine design
and machine operation. A special
sealing concept enables the joystick
switches to be installed completely
open, depending on the application.
This means that the joystick switch
not only offers the high degree of
IP69 protection for the front panel
but also offers IP67 protection on the
rear side – which makes the complex
inner cladding of the switching
contacts unnecessary.
The command and signalling devices
in the N-range from Schmersal are
also suitable for use in clean rooms
of air purity class 2 in accordance
with ISO 14644-1 and hygienic areas
up to GMP class C in accordance
with EU GMP Annex 1. They have
also been tested by the food and
packaging testing and certification
office of the DGUV for suitability for
hygiene-sensitive applications. This
means the control devices can be
used, for example, in meat processing
machines or machines which process
other raw ingredients such as fish,
poultry, milk or eggs.
As well as the devices in the N
range, Schmersal has prepared other
safety components, including safety
sensors and opto-electronic safety
products, for the specialist hygiene
requirements of the food industry.
These include contactless safety
sensors which are easy to clean
thanks to the smooth surfaces of the
sensor and actuator and can also be
fitted on a concealed basis.
Depending on the requirements,
these safety sensors are also tested
and certified in accordance with food
technology standards (Ecolab, EHEDG,
BG test certificate, FDA, etc.).
Turning workplaces
into safer places.
With the hygienic control
elements of our N range.
n Easy-to-clean hygienic design
n Outstanding resistance of the
food-grade materials against
cleaning agents
n Suitable for high-pressure cleaning
thanks to IP rating of IP69K
www.schmersal.com
For example, Schmersal has
developed the BNS 40S safety
sensors in a stainless steel casing and
in degree of protection IP69K specially
for monitoring safety doors on food
machines. They are particularly
suitable for use in hygiene and wet
areas. This also applies to the safety
light grids in the SLC 420/440/445
range, which are also made to IP69K
degree of protection.
Opto-electronic safety light curtains
and safety light grids are particularly
suitable for securing conveyor and
feed systems on packaging machines.
Numerous additional functions
such as muting or blanking enable
a differentiation between man and
material, which means the material
flow is only interrupted if a hazardous
situation arises.
FDPP - www.fdpp.co.uk 63