janus type 4 safety light curtains applications. janus muting light curtains janus j perimeter...
TRANSCRIPT
JANUS TYPE 4
SAFETY LIGHT CURTAINS
applications
JANUS Muting Light CurtainsJanus JPerimeter guarding, long range 60m with 40mm resolution, Passive retro reflective
Janus MI Standard Muting with external sensors
Janus MLWith Built in muting sensors for one way mode, entry or exit
Janus MTWith Built in muting sensors for two way mode, entry and exit
Janus TRX
All the above features with passive retro reflective element
http://muting.reer.it/
• The size of the pallet is regular• The muting sequence is correct• The pallet can pass through the safety light grid
S1 S2
MUTING
OSSD
ON OFFMechanical guards
Mechanical guards
DANGEROUS
AREA
JANUS MTJANUS MT 2 crossed muting beams 2 crossed muting beams
S1 S2
MUTING
OSSD
ON OFF
Mechanical guards
Mechanical guards
DANGEROUS
AREA
STOP
• The width of the pallet is much less than the conveyor width• The pallet is not centered on the conveyor• The muting sequence is wrong (the system is not in position to distinguish the material from the operator)• The safety light grid sends an emergency stop command to the machine
JANUS MTJANUS MT 2 crossed muting beams 2 crossed muting beams
S1 S2
MUTING
OSSD
ON OFF
Mechanical guards
Mechanical guards
DANGEROUS
AREA
STOP
• The width of the pallet is much less than the conveyor width• The pallet is not centered on the conveyor• The muting sequence is wrong (the system is not in position to distinguish the material from the operator)• The safety light grid sends an emergency stop command to the machine
JANUS MTJANUS MT 2 crossed muting beams 2 crossed muting beams
S1 S2
MUTING
OSSD
ON OFF
STOP
• 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.
JANUS MTJANUS MT 2 crossed muting beams 2 crossed muting beams
Mechanical guards
Mechanical guards
DANGEROUS
AREA
S1 S2
MUTING
OSSD
ON OFF
STOP
• 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.
JANUS MTJANUS MT 2 crossed muting beams 2 crossed muting beams
Mechanical guards
Mechanical guards
DANGEROUS
AREA
S1 S4
MUTING
OSSD
ON OFF
Mechanical guards
Mechanical guards
S2 S3
DANGEROUS
AREA
JANUS MT_S4JANUS MT_S4 4 parallel muting beams 4 parallel muting beams
• The width of the pallet is much less than the conveyor width• The pallet is not centered on the conveyor• The muting sequence is correct• The pallet can pass through the safety light grid
ReeR SpA JANUS 07/2005
S1 S4
MUTING
OSSD
ON OFF
Mechanical guards
Mechanical guards
S2 S3
DANGEROUS
AREA
STOP
JANUS MT_S4JANUS MT_S4 4 parallel muting beams 4 parallel muting beams
• The length of the pallet is less than the distance between S1-S4• The muting sequence is wrong (the system is not in position to distinguish the material from the operator)• The safety light grid sends an emergency stop command to the machine
S1 S4
MUTING
OSSD
ON OFFMechanical Guards
S2 S3
STOP
• For a short period, the 4 beams must all be interrupted (transfer of the muting function from s1-s2 to s3-s4). • An opaque cylindrical object D ≤ 500 mm (= a person) must not activate the muting function (IEC TS 62046).•The muting function is not activated and the safety outputs of the light curtain are brought to the off-state.
JANUS MT_S4JANUS MT_S4 4 parallel muting beams 4 parallel muting beams
DANGEROUS
AREA
Mechanical Guards
ReeR SpA JANUS 09/2005
JANUS MT JANUS MT 2 crossed muting beams 2 crossed muting beams
S1 S2
MUTING
OSSD
ON OFFMechanical guards
Mechanical guards
DANGEROUS
AREA STOP
• On the pallet there are transparent objects: empty glass bottles without labels• Due to the inclination of the muting beams only 1 or 2 bottles intercept the beams first • The muting beams could pass through the glass and the detection is difficult and unstable• The muting sequence is wrong• The safety light grid sends an emergency stop command to the machine
ReeR SpA JANUS 07/2005
S1 S4
MUTING
OSSD
ON OFF
Mechanical guards
Mechanical guards
S2 S3
DANGEROUS
AREA
• The muting sensors of Janus MT_S4 are specially designed for transparent objects• With parallel muting beams a row of bottles intercepts the beams and the detection is easier and stable• The muting sequence is correct• The pallet can pass through the safety light grid
JANUS MT_S4JANUS MT_S4 4 parallel muting beams 4 parallel muting beams
ReeR SpA JANUS 09/2005
S1 S2
MUTING
OSSD
ON OFFMechanical guards
Mechanical guards
DANGEROUS
AREA
JANUS ML JANUS ML 2 crossed muting beams 2 crossed muting beams
• The size of the pallet is regular• The muting sequence is correct• The pallet can pass through the safety light grid
ReeR SpA JANUS 09/2005
S1 S2
MUTING
OSSD
ON OFFMechanical guards
Mechanical guards
DANGEROUS
AREA
• The width of the pallet is much less than the conveyor width• The pallet is not centered on the conveyor• The muting sequence is correct• The pallet can pass through the safety light grid
JANUS ML JANUS ML 2 crossed muting beams 2 crossed muting beams
ReeR SpA JANUS 09/2005
S1 S2
MUTING
OSSD
ON OFFMechanical guards
Mechanical guards
DANGEROUS
AREA
JANUS ML_S2 JANUS ML_S2 2 parallel muting beams 2 parallel muting beams
• On the pallet there are transparent objects: empty glass bottles without labels• Due to the inclination of the muting beams only 1 or 2 bottles intercept the beams first • The muting beams could pass through the glass and the detection is difficult and unstable• The muting sequence is wrong• The safety light grid sends an emergency stop command to the machine
STOP
ReeR SpA JANUS 09/2005
S1 S2
MUTING
OSSD
ON OFFMechanical guards
Mechanical guards
DANGEROUS
AREA
JANUS ML_S2 JANUS ML_S2 2 parallel muting beams 2 parallel muting beams
• The muting sensors of Janus ML_S2 are specially designed for transparent objects• With parallel muting beams a row of bottles intercepts the beams and the detection is easier and stable• The muting sequence is correct• The pallet can pass through the safety light grid
IEC TS 62046
application and integration of safety electrosensitive devices for body detection
Muting function for palletizer protection
• 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
2 muting sensors – crossed beams with concurrent checking
IEC TS 62046
S2
HAZARDOUSZONE
S1a
b
d5
AOPD
• Due to an incorrect positioning muting beams S1 and S2 the pallet keeps the safety light grid in Muting condition for a long time.• If larger than 200 mm it could create a space sufficient to enter in the dangerous area
IEC TS 62046
S1
HAZARDOUSZONE
S2
a
b
AOPD
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
2 muting sensors – crossed beams with concurrent checking
• The crossing point of the two sensor 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
d7
X
2 muting sensors – crossed beams with concurrent checking
• 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 < 200 mm).
• The distance between any 2 muting sensors shall be sufficient so that they cannot be actuated simultaneously by a persons leg (d2 > 250 mm).
• All the 4 sensors must to be simultaneously intercepted for at least a small period of time.
4 muting sensor with parallel muting beams with entry / exit pallet sequence timing control ( “T” sensor position)
IEC TS 62046
S1 S2 S3 S4
HAZARDOUSZONE
d1 d3
d2
a
b
• An opaque cylindrical object with a diameter of 500 must not be able to activate the muting function.
IEC TS 62046
S1 S2 S3 S4
HAZARDOUSZONE
d1 d3
d2
500
mm
4 muting sensors with parallel muting beams with entry / exit pallet sequence timing control ( “T” sensor position)
JANUSJANUS SAFETY DISTANCE
JANUS ML / MTJANUS ML / MT
THE REASONS FOR SUCCESS
Safety and Responsibility
Thanks to:
• Built-in Muting Photocells with crossed or parallel beams always correctly positioned and in compliance• Safety requirements (IEC TS 62046) met in order to
recognize the material and distinguish between an object and a person.
• Built-in Muting Photocells protect against the end-user manipulating the position of the beams which
could lead to a dangerous condition.
Reduces risk for the Machine Manufacturer and the End User and meets safety requirements.
JANUS ML / MTJANUS ML / MT
THE REASONS FOR SUCCESS
Safety and Responsibility
With the ML / ML TRX and MT / MT TRX models, compliance with the safety requirements -IEC TS 62046- regarding the geometry of the muting sensors and all the other safety parameters is automatically guaranteed with built in sensors.
Janus M Series Light Barrier, Safety Innovation For Material Handling
The Janus M series range of light barriers for Palletizing, ,Machine Conveying, wrapping, loading, robotic applications etc... Where muting is integral to the flow of material.
Features:•Two safe static outputs can work without external control units having all the safety functions integrated inside the Emitter and the Receiver. This complies harmoniously with the requirements of the Standard EN 61496-1, the International Standard IEC 61496-1-2 and CSA Z432-04 - Safeguarding of Machinery. •Extremely easy connection and installation, thanks to the M12 5-pole (emitter) and M23 19-pole (receiver) standard connectors. •Use of standard cables up to 100 m long. No need for shielded cables. •Settings of each function are integrally performed via the connector. Patented solutions allow the installer to perform a wide range of user friendly configurable functions with only a few connector pins. No need for software or dip-switch settings on the light curtain for the configuration! The end user can replace a product without the possibility of errors or the necessity of a skilled operator! •Integration of the main safety functions, including self-monitoring of the safety circuits and, the external device monitoring (EDM) and the Start / Restart interlock functions. •Integration of the Muting function and of the Muting sensors (ML and MT models). All Muting parameters settings (Muting timeout, override, etc.), via the receiver connector and/or the MJB connection boxes.
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