Nessun titolo diapositiva

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IEC TS 62046 application and integration of
safety electrosensitive devices for body
detection Muting function for pallettiser
protection
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muting function
To permit access of the material and prevent
access by persons. Example of application
Pallet entrance/exit to/from the hazardous area.
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D
E
C
A
B

• Description of the installation
• A JANUS ML 3B protecting the pallets exit zone
  for finished goods
• B VISION V 3B protecting the manual loading
  zone for the separating sheets
• C Separating sheets that the machine pick-up
  and places on the layers of finished goods
• D Feeding belts for finished goods to be
  palletised
• E Palletiser that forms the layers of finished
  goods

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• Protection of a palletiser system
• Detail of JANUS ML 3B protecting the A zone
  (pallet exit zone with filled cans)

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• Protection of a de-palletiser system
• JANUS MT 3B protecting the entry zones for
  pallets with empty cans to be de-palletised and
  to be draw toward the filling machine

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2 muting sensors crossed beams with concurrent
checking

• The crossing point of the two light beams S1 and
  S2 shall be located behind the
• sensing field of the ESPE in direction of the
  hazardous zone.
• t2(s2) t1(S1) 4 sec. max

IEC TS 62046
7
2 muting sensors crossed beams with concurrent
checking

• Due to an incorrect positioning of the muting
  beams S1 and S2 the pallet keeps the
• safety light grid in Muting condition for a
  long time.
• If a is larger than 200 mm that could create a
  space sufficient to enter in the
• dangerous area

IEC TS 62046
8
2 muting sensors crossed beams with concurrent
checking

• An object with a diameter of 500 mm must not be
  able to start the muting function.
• That gives assurance of a correct distinction
  between the material and a person.

IEC TS 62046
9
2 muting sensors crossed beams with concurrent
checking
YES
NO!

• The crossing point of the two sensors beams
  should be positioned at the same level
• as, or higher than, the lowest beam of the
  safety barrier in order to avoid easy
• manipulation of the system and unintentional
  activation of the muting function.

IEC TS 62046
10
4 muting sensor with parallel muting beams with
entry / exit pallet sequence timing control ( T
sensor position)

• The muting sensors shall be installed so close
  to the safety barrier so that it is
• difficult to enter the danger zone without
  being detected by preceding or following
• immediately the pallet or the transport system
  (d1 e d3 lt 200 mm).
• The distance between any 2 muting sensors shall
  be sufficient so that thety cannot be
• actuated simultaneously by a trouser leg (d2
  gt 250 mm).
• All the 4 sensors must to be simultaneously
  intercepted for at least a little period of
• time.

IEC TS 62046
11
4 muting sensor with parallel muting beams with
entry / exit pallet sequence timing control ( T
sensor position)

• An opaque cylindrical object with a diameter of
  500 must not be activate tha muting
• function.

IEC TS 62046
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JANUS
SAFETY DISTANCE
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JANUS TYPE 4 SAFETY LIGHT CURTAINS application
s
ReeR SpA 01/2008
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JANUS MT 2 crossed muting beams
Mechanical guards
S1
S2
DANGEROUS AREA
MUTING
Mechanical guards
ON
OFF

• The size of the pallet is regular
• The muting sequence is correct
• The pallet can pass through the safety light
  grid

OSSD
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JANUS MT 2 crossed muting beams
Mechanical guards
S1
S2
STOP
DANGEROUS AREA
Mechanical guards
MUTING

• The muting function can be activated only if two
  muting sensors are activated at the same time
  t2(s2) t1(S1) max. 4 seconds
• An opaque cylindrical object D 500 mm ( a
  person) must not be able to initiate the muting
  function (IEC TS 62046).
• The cylindrical test object is detected by the
  light curtain before it activates the muting
  sensors.
• The cylindrical test object activates a muting
  sensor and interrupts a beam of the light curtain
  before activating the second muting sensor. The
  muting function is not activated and the safety
  outputs of the light curtain are brought to the
  off-state.

ON
OFF
OSSD
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JANUS ML 2 crossed muting beams
Mechanical guards
S1
S2
DANGEROUS AREA
MUTING
Mechanical guards
ON
OFF

• The size of the pallet is regular
• The muting sequence is correct
• The pallet can pass through the safety light
  grid

OSSD
ReeR SpA JANUS 09/2005
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JANUS ML / MT

• Safety and Responsibility
• Thanks to
• Built-in Muting Photocells that allows the
  position of the
• crossed or beams is always correct and
  complying the
• safety requirements (IEC TS 62046) in order to
  recognize
• the material and distinguish between an object
  and an
• operator.
• Built-in Muting Photocells avoid that the
  end-user can
• manipulate the position of the beams that
  could lead to
• dangerous condition.
• Less risks for the Machine Manufacturer and the
  End User.

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JANUS ML / MT
Safety and Responsibility With the ML / ML
TRX and MT / MT TRX models compliance with the
regulatory requirements -IEC TS 62046- regarding
the geometry of the muting sensors and all the
other safety parameters is automatically
guaranteed.
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• Protection of a palletiser system in the bottling
  industry
• JANUS MT 2B with MJB1 box protecting the pallet
  exit zone with filled bottles

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• Protection of an automatic refrigerator
  storehouse in the food industry realized with
• JANUS MT 2B with 2 beams for pallet entry / exit
  areas for the automatic loading and downloading
  cycles
• Detail of entry / exit zone

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• Protection of an automatic refrigerator
  storehouse in the food industry
• JANUS ML 2B with 2 beams for pallet exit areas
  for the automatic downloading cycles

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• Protection of a de-palletiser system
• JANUS MT 3B protecting the entry zones for
  pallets with a pile of empty pallets to be
  de-palletised

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APPLICATIONS MADE WITH COMPETITORS LIGHT GRIDS
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Protection of a palletiser system realized with
SICK MSLZ light grid (with retro-reflective
passive element) external photocells as muting
sensors
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Protection of a palletiser system realized with
LEUZE Robust light grid (with retro-reflective
passive element) external photocells as muting
sensors
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Protection of a palletiser system realized with
DIELL light grid external photocells as muting
sensors
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Protection of a palletiser system realized with
SICK MSLZ light grid (with retro-reflective
passive element) 4 external photocells as
muting sensors
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Protection of a palletiser system realized with
SICK MSLZ light grid (with retro-reflective
passive element) 4 external photocells as
muting sensors. Detail of the application.
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Protection of a palletiser system realized with
SICK MSLZ light grid 4 external photocells as
muting sensors. Detail of the retro-reflective
passive element of the light grid and the 4
reflectors for the muting photocells.