MAYSER Polymer Electric
We are Authorized Representative for Mayser GmbH & Co KG, Germany for Safety Edge, Mats, Relays, Bumpers, etc for India. Please visit http://www.mayser-sicherheitstechnik.de/english/
Mayser provides Safety and Anti Pinch Sensors wherever persons or objects are endangered by automatically controlled movements
Moving machine parts have the potential to cause severe workplace injuries,
such as crushed fingers or hands, amputations, burns, or blindness.
Safeguards are essential for protecting workers from these preventable injuries.
Any machine part, function, or process that may cause injury must be safeguarded.
When the operation of a machine or accidental contact injure the operator or others in the vicinity,
the hazards must be eliminated or controlled.
LIGHT CURTAIN TO MACHINE TRAP SAFETY DISTANCE
The reference Standard is the EN 999 'Safety of machinery - the positioning of protective equipment in respect of approach speeds of parts of the human body'. The given information is indicative and synthetic; it is compulsory to refer to the complete EN 999 standard for a correct safety distance calculation. The minimum distance S in mm between the hazardous area and the detection point is expressed by the formula:
S = (K x T) C
K is a parameter (mm/sec) linked to the approach speed of the human body or parts and is 2000 mm/sec where S < 500 mm
T is the total time (sec) necessary to stop the machine
C is an additional distance (mm) based on the device typology used in terms of resolution, where the resolution is the minimum dimension of an opaque object able to obscure at least one of the beams of the sensitive detection area.
C=8(d-14) but not less than 0 and d=the detection capability of the Light Curtain (mm) and subject to a minimum allowable separation of S of 100 mm.
If S is found to be greater than 500 mm when using a value of 2000 mm/s for K, then a value of 1600 mm/s for K may be used. However, if the results of the calculation give a value less than 500 mm, the separation distance used should be 500 mm. The formula becomes: S =(1600 mm/s x T) 8(d-14 mm)
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