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OPERATING MANUAL
2 INSTALLATION
2.1 Precautions to be taken during selection and installation of a light
curtain
Ensure that the safety level guaranteed by the PSEN op4F/H-A
(Type 4) complies with the actual risk assessment of the machine
to be monitored, as well as the level defined by the standard
EN ISO 13849.
Ensure that the light curtain's outputs (OSSD) are used as
machine stopping devices and not as control devices. The
machine must have a separate START control.
Ensure that the correct operation of the light curtain is not
disturbed by strong electromagnetic interference.
Ensure that the light curtain, particularly the receiver, is not
installed close to particularly intense and/or flashing light sources.
• The size of the smallest object to be detected must be greater than the device's resolution.
• The light curtain must be installed in an environment that complies with the technical properties
stated in Chapter 11.
• Smoke, mist or dust in the working environment can reduce the operating range of the
protective device.
• Sudden, large-scale temperature variations, particularly with low temperatures can generate a
slight layer of condensation on the device's lens, adversely affecting its function.
• Reflective surfaces close to the beams emitted from the protective device (whether from above,
below or from the side) can cause passive reflections that adversely affect the correct operation
of the light curtain.
• The protective device must be positioned at a distance that exceeds the minimum safety
distance S or that corresponds to it, so that the operator cannot reach the danger zone until the
movement of the hazardous object has come to a standstill by triggering the light curtain.
14
PSEN op4F/H-A series
1003067-EN-04
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