Light Curtains

Enicstra stocks safety light curtains used to detect hand or finger intrusion into hazardous zones on press brakes, stamping presses, packaging machines, and robotic cells. Inventory covers Type 2 and Type 4 curtains per IEC 61496, with resolutions for hand detection (typically 30 mm) and finger detection (typically 14 mm), and protective heights from short access-point curtains to full-body perimeter curtains.

Brands carried include Sick C4000, deTec, microScan3 with curtain function, Banner EZ-Screen, Allen-Bradley GuardShield 450L, Omron F3SG-SR, Pilz PSEN op, Keyence SF/GL-series, and Schmersal SLG. Obsolete light curtains — discontinued C4000 first generations, retired EZ-Screen, end-of-life F3SN — are sourced through our supplier network. Each unit is bench-tested for power-up and OSSD output and ships with a 12-month functional warranty.

For an obsolete light curtain, send the OEM part number for a quote within 1–2 business days.

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Light Curtains

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Buying guide

Choosing Light Curtains components

Light curtain selection is governed by the hazard, the safety distance, and the required protection class. The wrong resolution does not protect the operator; the wrong height does not cover the access area; the wrong type does not meet the PL the application demands. Replacement decisions need to match all three.

Specs to confirm before ordering:

Type 2 (PL c / SIL CL1) or Type 4 (PL e / SIL CL3) per IEC 61496
Resolution: 14 mm (finger), 20 mm (hand-finger), 30 mm (hand), 40 mm or larger (body)
Protective height — the actual sensing height (not the housing height)
Operating range — typically 0–6 m or longer for larger curtains
Response time and total system stopping time (affects safety distance calculation per ISO 13855)
Mounting style: standard, side-mount brackets, or integrated mounting
Cable style — typically M12 8-pin or 12-pin quick-disconnect
Muting, blanking, and start/restart features if needed for the application
Cascade capability if multiple curtains are linked

Common gotchas: an emitter and receiver pair must come from the same family and the same resolution; mixing across generations or resolutions does not work. The protective height is the actual beam-to-beam sensing area; the housing has dead zones at top and bottom that are not protected, which matters for the safety distance calculation. Muting functions (allowing material to pass through without triggering the safety stop) require correctly placed muting sensors and a configuration that is validated per ISO 13849 — not just enabled in software. Replacing a Type 4 curtain with a Type 2 is a downgrade and changes the PL rating of the safety function.

Typical applications: hand protection at the point of operation on press brakes and stamping presses, finger protection on small packaging and assembly machines, perimeter or access-point guarding on robotic cells, and entry protection on automated material-handling equipment. On legacy machines, in-kind OEM replacement preserves the existing safety distance and validation.

For obsolete light curtains, send the OEM part number for a sourcing quote.

Related categories Frequently asked questions

Do you stock obsolete light curtains?

Yes. Discontinued Sick C4000 first generations, retired Banner EZ-Screen, end-of-life Omron F3SN, and earlier Pilz PSEN op are sourced through our supplier network.

Can I mix emitter and receiver from different curtain families?

No. Emitter and receiver must be from the same family, same resolution, and the same protective height. Mixing across families does not pair and does not provide the rated safety function.

Type 2 vs. Type 4 — which do I need?

Type 4 is required for PL e / SIL CL3 applications such as press brakes, stamping presses, and high-hazard point-of-operation guarding. Type 2 is for lower-PL applications. The risk assessment determines which is required.

How is safety distance calculated?

Per ISO 13855: S = K × (Ts + Tr) + C, where Ts is machine stopping time, Tr is curtain response time, K is the standardized hand speed, and C is a resolution-dependent intrusion factor. Substituting a curtain with different response time or resolution changes S — sometimes enough to require relocating the curtain.

Are muting sensors included?

No. Muting sensors are typically sold separately and are configured per the specific muting layout. We stock muting kits for some OEMs; ask if you need a coordinated set.

What is the warranty?

12-month functional warranty on the curtain pair. Safety-function performance in the application is the integrator's responsibility.