The Omron F3SJ-A1820P25-TS is a Type 4 safety light curtain from the F3SJ-A series, designed for hand protection in hazardous machine zones. Its 25 mm detection capability means it reliably catches a hand or finger reaching into the guarded area, triggering a stop signal before contact. The 20 mm beam pitch and 91 beams give it a 1820 mm protective height, covering a wide vertical opening on a press, robot cell, or assembly station. The operating range spans 0.2 m to 7.0 m, so it works for both tight machine guarding and longer reach across a conveyor or gantry. IP65 rating means the housing and optics resist washdown and dust ingress — it's suited for food processing lines or machining centers where coolant mist and washdown cycles are routine. It runs on 24 VDC, standard for safety circuits, and includes blanking and muting functions. Blanking lets you mask fixed obstructions (like a machine frame) within the field; muting allows the curtain to be temporarily overridden during a material pass-through, which is common on palletizing or packaging lines.
Omron F3SJ-A1820P25-TS Safety Light Curtain, 25mm Detection,
Omron F3SJ-A series safety light curtain, F3SJ-A1820P25-TS, hand protection, 25 mm detection capability, 1820 mm protective height, 20 mm beam pitch, IP65, 24 VDC.
Specifications
| Parameter | Value |
|---|---|
| Series | F3SJ-A |
| Parameter | Value |
|---|---|
| Detection capability (resolution) | 25mm |
| Protection | Hand |
| Protective height | 1820mm |
| Operating range (sensing distance) | 0.2m ~ 7.0m |
| Number of beams | 91 |
| Beam pitch | 20mm |
| Features | Blanking, Muting Function |
| Parameter | Value |
|---|---|
| Supply voltage | 24VDC |
| Parameter | Value |
|---|---|
| Operating temperature | -10°C ~ 55°C |
| Ingress protection (IP) | IP65 - Dust Tight, Water Resistant |
Product details
Frequently asked questions
What does the 25 mm detection capability mean for installation?
It means the curtain detects a hand-sized object (25 mm diameter or larger). This drives the minimum safety distance from the hazard per ISO 13855. For hand protection, 25 mm is the standard; a 14 mm curtain would allow closer mounting but costs more.
What is the protective height and how many beams does it have?
The protective height is 1820 mm, covered by 91 beams at a 20 mm pitch. This is suitable for guarding a vertical opening up to about 1.8 m tall.
Is this light curtain suitable for washdown environments?
Yes, it carries an IP65 rating, meaning it is dust-tight and protected against water jets. It can handle washdown in food processing or coolant spray in machining centers.
Does it support blanking and muting?
Yes, the F3SJ-A1820P25-TS includes blanking (to mask fixed obstructions) and muting (to temporarily override the curtain during material pass-through). These are built-in features, not optional add-ons.