What this F3SG4PGA13704A does on the line
The Omron F3SG4PGA13704A is a Type 4 safety light curtain from the F3SG-PG series, built for guarding access to hazardous machinery. Four beams at 400 mm spacing give a protected height of 1,370 mm, which covers the reach zone for most standing operators — think press brakes, robotic cells, or packaging lines where a person could step into a pinch point. The 870 nm IR LEDs are invisible to the eye, so you don't get false trips from ambient light or strobes. It runs on 24V DC with safety outputs rated at 300 mA, and the auxiliary output is configurable as NPN or PNP at 100 mA — handy for feeding a PLC input or a status lamp without an extra relay. Maximum response time is 8 ms, which means the machine stops before a hand crosses the full 400 mm gap at typical approach speeds. Sensing range reaches 20 m, so it works across wide openings.
Mounting and connections — what fits in the van
Both transmitter and receiver use M12 connectors — 5-pin on the transmitter, 8-pin on the receiver. That's a standard industrial quick-connect; you won't need to strip and crimp in the field. The housing carries IP65/IP67, so it handles washdown on food lines or dusty environments without a secondary enclosure. Overall dimensions: 53.94 inches tall, 1.84 inches wide, 1.5 inches deep. It ships with end caps included, which clean up the mounting brackets and keep the alignment stable.
Compliance documentation is straightforward: CE-marked for the European market, CSA and UL Listed for North America. That covers most industrial safety audits without extra paperwork.