Pilz PSEN op4B-S-3-080 - Manual (Page 54)

PSEN op4B Series Operating Manual
50
8 REGULAR CHECKS AND MAINTENANCE
Qualified personnel must carry out the following checks regularly.
Ensure that:
• The “SAFE/BREAK” LED is constantly red when you pass the test
rod from top to bottom along the length of the whole sensing area,
at any distance from either unit.
• The safety light curtain switches to an OFF state when the
test/reset button is operated (“SAFE/BREAK” LED lights up red -
OSSD outputs open - monitored machine switches to a safe
condition).
• The reaction time at a machine stop, incl. the reaction time of the
safety light curtain and the machine overrun time, is within the
limits defined through the calculation of the safety distance (see
Chapter 2 “Installation”).
• The minimum safety distance between the danger zone and the
protected field is in accordance with the details stated in Chapter 2
“Installation”.
• Nobody can access and remain in the danger zone between the
safety light curtains and the hazardous machine parts.
• The danger zone cannot be accessed from any unprotected area.
• There is no visible damage to the safety light curtain and/or the
external electrical connections.
We recommend a yearly inspection.