Download Clean-design valves ensure sanitation

OEM APPLICATION NOTE
Pneumatics
Clean-design valves
ensure sanitation
Clean-design pneumatic valve terminals and actuators
offer a high level of hygiene, as well as low maintenance.
Abbey Lewis, Online Editor
T
wo Festo components help make
Elopak’s container loading system
both hygienic and easy-to-maintain.
Lauri Nurminen, sales manager materials handling with Elopak, outlined the benefits
of the Festo CDVI Clean Design Valve Terminals
and CDN Clean-Design Cylinders at a speech to
editors from around the world who attended a
press briefing at Festo’s German headquarters
this past December.
The materials handling division of Elopak,
located in Finland and Norway, manufactures its
container loaders mostly for high-volume or
quick-turnover products such as fresh milk.
Mounted on rollers, containers carry 160 liters
and have a capacity varying from 5,000 to
13,000 units/hour.
A complex series of actions unfolds as the
Elopak system does its thing. First, a group of
bottles is pushed forward on to a slotted table of
the container loader. A loading plate is pushed
into the trolley. A group pusher front plate moves
the group onto the roll container shelf. The full
trolley elevator moves the trolley downward to
the next shelf level for loading. This is repeated
four times to fully load one trolley.
Three of Festo’s pneumatic valve terminals are
on the machine: one is placed close to the trolley-handling section of machine, one is near the
full trolley out-pusher, and the other is above the
bottle grouping section of the machine. The
machine is controlled by a Mitsubishi Q-Series
PLC, which is connected directly to the valve terminals. Elopak also uses Mitsubishi’s CC-link network to communicate between machines and the
line control system.
Valves control various
cylinders in the machine.
• Pusher plates move up
and down with pneumatics.
• Bottle guides and shelf
knock down units are pneumatically driven at bottle infeed.
• Trolley locks and guide
plates on the out-feeding
unit are pneumatic.
• Safety doors for trolley in-feed and outfeed have cylinders driving them.
• CIP valves are also pneumatically controlled.
The Clean-Design Valve Terminals are ideal
for wet environments such as a dairy or other
beverage-filling applications, Nurminen said.
They can even operate without protective stainless-steel control cabinets. This means that they
can be mounted directly to the machine, helping save space in the control cabinet.
The Clean-Design cylinders require minimal
cleaning for maximum functionality. They are
enclosed on all sides to avoid dirt and dust collection on the cylinders. They’re also easy to maintain. The cylinders are housed in anodized aluminum, providing enhanced corrosion resistance.
Festo AG & Co. KG, Phone: 631/404-3200
www.festo.com
Elopak, Phone: 011/47.31.27.10.00
www.elopak.com
Both pneumatic cylinders
(above) and valve terminals
(top) feature clean-design
principles that enhance
hygiene and simplify
maintenance.
Mitsubishi Electronics, Phone: 714/220-2500
www.mitsubishielectric.com
Copyright 2005 Summit Publishing, Inc. Reprinted with permission from the March 2005 issue of Packaging World.
For more information about reprints from Packaging World, contact PARS International Corp. at (212) 221-9595.
Individual “Clean Design” Valve, Type CDSV
Easy-to-clean and corrosion resistant
The new individual Clean Design
valve – simply a clean solution...
Designed to address the needs of
specific environmental challenges
commonly found in food handling
and processing and other applications requiring easy-to-clean products.
Easy to clean
In accordance with hygienic
design standards (DIN ISO
14159), the CDSV have no sharp
edges or small corners where dirt
can accumulate. The CDSV is a
compact, space-saving design
available in four valve functions:
– 5/2-way valve, single solenoid
Technical data
– 5/2-way valve, double solenoid
Design
– 5/3-way valve, exhausted,
Mounting position
any
pressurized or closed in mid-position
Manual override
non-detenting
– 2 x 3/2-way valve, single
Corrosion resistance
solenoid, 2 x normally closed or
classification
CRC3 to FN 940 070 *
normally open or 1 x normally
Dimensions
207/34/67.6 in mm (H/W/D)
open, 1 x normally closed
Pneumatic data
piston spool valve
Medium
compressed air, filtered, lubricated or
The CDSV valves can be used with
Grade of filtration
40 µm
a CDVI valve terminal in the 1st
Operating temperature
–5 ... +50 °C
grid by means of a sub-base.
Standard nominal flow rate max. 650 l/min
unlubricated
Adaptable
Operating pressure:
Quicker to install
– 5/2-, 5/3-way valves
–0.9 ... 10 bar
With a ready-to-install prefitted
– 2 x 3/2-way valves
3 ... 10 bar
cable – the Clean Design valves can
pilot pressure
3 ... 6 bar
be used without a stainless steel
Pneumatic connections
Gx ''” , M5
control cabinet.
Electrical data
Operating voltage
DC 24 V, ±10 %
Clean Design at the point of
Power consumption
1.5 W per solenoid coil (with LED)
action
Duty cycle
100 %
CDSV supplies compressed air to
Protection class to
decentralized upstream machine
EN 60 529
parts and for other applications,
while delivering faster cycles and
lower air consumption.
IP65/67 fully assembled
*CRC3: Corrosion resistance class to Festo standard 940 070 (Components
requiring higher corrosion resistance. External visible parts in direct contact
with industrial atmospheres or media such as solvents and cleaning agents,
with a predominantly functional requirement for the surface).
For ordering
and product assistance,
or to find your nearest
Festo Distributor in the USA,
Call:
Fax:
E-mail:
Visit:
1.800.99.FESTO
1.800.96.FESTO
[email protected]
www.festo.com/us