All functions on board
Light curtains play an important role in protecting humans against moving parts of machines. However, emergency stop switches and safety door contacts also need to be integrated and wired. For smaller production plants, the additional time and effort needed for implementing safety measures is relatively high. Panasonic’s light curtain SF4C offers a solution.
Emergency stop switches or safety door switches can be connected directly and without need for a safety PLC to the light curtain. The additional contacts needed for monitoring the power relays can also be connected directly to the light curtain.
Up to now, a total of six safety relays were needed to switch off the machine when up to three light curtains were mounted in cascade. Thanks to the innovative technology of the SF4C light curtain series only two safety relays are needed. This reduces cost and time for wiring.
The light curtain series SF4C comes with externally controlled, highly visible red, yellow, and gree LED signal lamps.
The SF4C series has safety class 4 (PLe, SIL3) and a beam pitch of 10 and 20mm. A protective height ofup to 640mm can be achieved. Additional advantages of the innovative light curtains of the SF4C series: muting, fixed and floating blanking, extraneous light check & avoid function (ELCA), a very low weight thanks to a polycarbonate housing, an integrated error display, and password protection.
