The Omron F3SG-4SRA1200-45 is a Type 4 safety light curtain from the F3SG-SR series, rated for arm and foot protection with a 45 mm detection capability. Its 30 beams at 40 mm pitch cover a 1200 mm protective height, and the operating range spans 0.3 m to 20.0 m. The unit runs on 24 VDC and carries an IP65/IP67/IP67G ingress rating, meaning it's dust-tight, water-resistant, and oil-resistant — suitable for washdown environments.
The 45 mm detection capability is the key spec for personnel safety: it's sized to catch a hand or forearm, not a fingertip. That makes it appropriate for perimeter guarding or access points where a 14 mm finger-safe curtain would be overkill and a 50 mm body-only curtain insufficient. The 1200 mm protective height and 20 m range suit it for large machine openings or conveyor lines. The 40 mm beam pitch is the spacing between adjacent beams — tighter than the 50 mm pitch on some body-only units, which is why it resolves the smaller target. Blanking and muting functions are built in. Blanking lets you disable specific beams for a fixed obstruction like a fixture; muting temporarily suspends the curtain during a material pass. Both are configurable without external modules, which simplifies wiring in a panel where the safety relay already handles the reset logic.
Mounting and environmental notes
The IP65/IP67/IP67G rating covers dust ingress and temporary submersion, plus oil resistance per the IP67G suffix. The 24 VDC supply is standard for safety circuits — verify the power supply can deliver the inrush current for the emitter and receiver pair, but the curtain itself draws within the typical 24 VDC safety loop budget.