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Small Light Curtain
The SF4-AH series has surpassed the most stringent international safety levels and is compliant with the machinery directive and OSHA/ ANSI standards. This series has been certified for usage in any workplace around the world.
It uses two independent CPUs, which mutually check the safety conditions. High reliability safety design is realized by incorporating dual circuits for signal processing and output. Furthermore, in order to ensure safety, FMEA (Failure Mode & Effect Analysis) has been used to prove safe operation.
The SF4-AH has a high-speed 11 ms response time, regardless of the number of beam channels. This high-speed response simplifies the entire process of safety distance calculation and allows the safe distance between the danger areas and the light curtain to be reduced.
Beam alignment has been simplified due to a convenient 4-bar LED display that indicates partial and full alignment. A laser alignment tool is also available for use in long distance set-up.
Also incorporated into the SF4-AH is the ELCA, or Extraneous Light Check & Avoid function. This is an advanced interference prevention system that not only cancels the effect of high intensity extraneous light but also avoids mutual interference with other units by shifting the scan timing of the light curtain.
Up to three sets of curtains can be connected in series, thus reducing the number of safety relay units needed for a single machine. This is significant for reducing the costs of machine safeguarding.
Fixed and floating blanking functions are also built-in to the light curtain. All blanking functions are easily configured using the SF-HC Handy Controller. In addition, the SF-HC can also control the light emission intensity, password protect against unauthorized changes, and easily copy settings to other light curtains.
The SF-AC safety relay unit is available for safety applications with a built-in power supply. With a 10ms response time and removable terminal blocks, the SF-AC ensures safe and stable protection for your machines.
SF4-AH Models
You may sort models by clicking the arrows in the appropriate column. If you are searching for a particular model but can't find it, give our model search utility a try. All downloads have moved to our separate downloads center.
Click one of the links below to view all related models. Models will appear below the links.
Currently viewing: SF4-AH Sensor Heads
| Model Name | Type | Safety Protection | Number Of Beam Channels | Beam Pitch (mm) | Minimum Detectable Object (mm) | Protected Height (mm) | Protected Height (in) | Response Speed (ms) | Muting/blanking Functions | Sensing Distance (m) | Output Configuration |
Sort   | Sort | Sort | Sort | Sort | Sort | Sort | Sort | Sort | Sort | Sort | Sort |
| SF4-AH12 | Safety Light Curtain | Type 4 | 12 | 20 | 30 | 270 | 10.63 | 11 | Blanking | 7 | PNP |
| SF4-AH12-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 12 | 20 | 30 | 270 | 10.63 | 11 | Blanking | 7 | PNP |
| SF4-AH12-N | Safety Light Curtain | Type 4 | 12 | 20 | 30 | 270 | 10.63 | 11 | Blanking | 7 | NPN |
| SF4-AH16 | Safety Light Curtain | Type 4 | 16 | 20 | 30 | 350 | 13.78 | 11 | Blanking | 7 | PNP |
| SF4-AH16-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 16 | 20 | 30 | 350 | 13.78 | 11 | Blanking | 7 | PNP |
| SF4-AH16-N | Safety Light Curtain | Type 4 | 16 | 20 | 30 | 350 | 13.78 | 11 | Blanking | 7 | NPN |
| SF4-AH20 | Safety Light Curtain | Type 4 | 20 | 20 | 30 | 430 | 16.929 | 11 | Blanking | 7 | PNP |
| SF4-AH20-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 20 | 20 | 30 | 430 | 16.929 | 11 | Blanking | 7 | PNP |
| SF4-AH20-N | Safety Light Curtain | Type 4 | 20 | 20 | 30 | 430 | 16.929 | 11 | Blanking | 7 | NPN |
| SF4-AH24 | Safety Light Curtain | Type 4 | 24 | 20 | 30 | 510 | 20.079 | 11 | Blanking | 7 | PNP |
| SF4-AH24-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 24 | 20 | 30 | 510 | 20.079 | 11 | Blanking | 7 | PNP |
| SF4-AH24-N | Safety Light Curtain | Type 4 | 24 | 20 | 30 | 510 | 20.079 | 11 | Blanking | 7 | NPN |
| SF4-AH28 | Safety Light Curtain | Type 4 | 28 | 20 | 30 | 590 | 23.228 | 11 | Blanking | 7 | PNP |
| SF4-AH28-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 28 | 20 | 30 | 590 | 23.228 | 11 | Blanking | 7 | PNP |
| SF4-AH28-N | Safety Light Curtain | Type 4 | 28 | 20 | 30 | 590 | 23.228 | 11 | Blanking | 7 | NPN |
| SF4-AH32 | Safety Light Curtain | Type 4 | 32 | 20 | 30 | 670 | 26.378 | 11 | Blanking | 7 | PNP |
| SF4-AH32-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 32 | 20 | 30 | 670 | 26.378 | 11 | Blanking | 7 | PNP |
| SF4-AH32-N | Safety Light Curtain | Type 4 | 32 | 20 | 30 | 670 | 26.378 | 11 | Blanking | 7 | NPN |
| SF4-AH36 | Safety Light Curtain | Type 4 | 36 | 20 | 30 | 750 | 29.528 | 11 | Blanking | 7 | PNP |
| SF4-AH36-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 36 | 20 | 30 | 750 | 29.528 | 11 | Blanking | 7 | PNP |
| SF4-AH36-N | Safety Light Curtain | Type 4 | 36 | 20 | 30 | 750 | 29.528 | 11 | Blanking | 7 | NPN |
| SF4-AH40 | Safety Light Curtain | Type 4 | 40 | 20 | 30 | 830 | 32.677 | 11 | Blanking | 7 | PNP |
| SF4-AH40-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 40 | 20 | 30 | 830 | 32.677 | 11 | Blanking | 7 | PNP |
| SF4-AH40-N | Safety Light Curtain | Type 4 | 40 | 20 | 30 | 830 | 32.677 | 11 | Blanking | 7 | NPN |
| SF4-AH48 | Safety Light Curtain | Type 4 | 48 | 20 | 30 | 990 | 38.974 | 11 | Blanking | 7 | PNP |
| SF4-AH48-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 48 | 20 | 30 | 990 | 38.974 | 11 | Blanking | 7 | PNP |
| SF4-AH48-N | Safety Light Curtain | Type 4 | 48 | 20 | 30 | 990 | 38.974 | 11 | Blanking | 7 | NPN |
| SF4-AH56 | Safety Light Curtain | Type 4 | 56 | 20 | 30 | 1150 | 45.276 | 11 | Blanking | 7 | PNP |
| SF4-AH56-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 56 | 20 | 30 | 1150 | 45.276 | 11 | Blanking | 7 | PNP |
| SF4-AH56-N | Safety Light Curtain | Type 4 | 56 | 20 | 30 | 1150 | 45.276 | 11 | Blanking | 7 | NPN |
| SF4-AH64 | Safety Light Curtain | Type 4 | 64 | 20 | 30 | 1310 | 51.575 | 11 | Blanking | 7 | PNP |
| SF4-AH64-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 64 | 20 | 30 | 1310 | 51.575 | 11 | Blanking | 7 | PNP |
| SF4-AH64-N | Safety Light Curtain | Type 4 | 64 | 20 | 30 | 1310 | 51.575 | 11 | Blanking | 7 | NPN |
| SF4-AH72 | Safety Light Curtain | Type 4 | 72 | 20 | 30 | 1470 | 57.874 | 11 | Blanking | 7 | PNP |
| SF4-AH72-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 72 | 20 | 30 | 1470 | 57.874 | 11 | Blanking | 7 | PNP |
| SF4-AH72-N | Safety Light Curtain | Type 4 | 72 | 20 | 30 | 1470 | 57.874 | 11 | Blanking | 7 | NPN |
| SF4-AH8 | Safety Light Curtain | Type 4 | 8 | 20 | 30 | 190 | 7.48 | 11 | Blanking | 7 | PNP |
| SF4-AH80 | Safety Light Curtain | Type 4 | 80 | 20 | 30 | 1630 | 64.173 | 11 | Blanking | 7 | PNP |
| SF4-AH80-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 80 | 20 | 30 | 1630 | 64.173 | 11 | Blanking | 7 | PNP |
| SF4-AH80-N | Safety Light Curtain | Type 4 | 80 | 20 | 30 | 1630 | 64.173 | 11 | Blanking | 7 | NPN |
| SF4-AH88 | Safety Light Curtain | Type 4 | 88 | 20 | 30 | 1790 | 70.472 | 11 | Blanking | 7 | PNP |
| SF4-AH88-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 88 | 20 | 30 | 1790 | 70.472 | 11 | Blanking | 7 | PNP |
| SF4-AH88-N | Safety Light Curtain | Type 4 | 88 | 20 | 30 | 1790 | 70.472 | 11 | Blanking | 7 | NPN |
| SF4-AH8-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 8 | 20 | 30 | 190 | 7.48 | 11 | Blanking | 7 | PNP |
| SF4-AH8-N | Safety Light Curtain | Type 4 | 8 | 20 | 30 | 190 | 7.48 | 11 | Blanking | 7 | NPN |
| SF4-AH96 | Safety Light Curtain | Type 4 | 96 | 20 | 30 | 1950 | 76.772 | 11 | Blanking | 7 | PNP |
| SF4-AH96-H | Safety Light Curtain, w/ Protection Hood | Type 4 | 96 | 20 | 30 | 1950 | 76.772 | 11 | Blanking | 7 | NPN |
| SF4-AH96-N | Safety Light Curtain | Type 4 | 96 | 20 | 30 | 1950 | 76.772 | 11 | Blanking | 7 | PNP |
Currently viewing: SF4-AH Controllers
| Model Name | Type |
| Sort | Sort |
| SF-AC | Safety Relay Unit |
Currently viewing: SF4-AH Accessories
| Model Name | Description |
| Sort | Sort |
| FC-SF4A-H12 | FRONT PROTECT COVER FOR SF4A-H12 |
| FC-SF4A-H12-H | FRONT PROTECT COVER FOR SF4A-H12H |
| FC-SF4A-H16 | FRONT PROTECT COVER FOR SF4A-H16 |
| FC-SF4A-H16-H | FRONT PROTECT COVER FOR SF4A-H16H |
| FC-SF4A-H20 | FRONT PROTECT COVER FOR SF4A-H20 |
| FC-SF4A-H20-H | FRONT PROTECT COVER FOR SF4A-H20H |
| FC-SF4A-H24 | FRONT PROTECT COVER FOR SF4A-H24 |
| FC-SF4A-H24-H | FRONT PROTECT COVER FOR SF4A-H24H |
| FC-SF4A-H28 | FRONT PROTECT COVER FOR SF4A-H28 |
| FC-SF4A-H28-H | FRONT PROTECT COVER FOR SF4A-H28H |
| FC-SF4A-H32 | FRONT PROTECT COVER FOR SF4A-H32 |
| FC-SF4A-H32-H | FRONT PROTECT COVER FOR SF4A-H32H |
| FC-SF4A-H36 | FRONT PROTECT COVER FOR SF4A-H36 |
| FC-SF4A-H36-H | FRONT PROTECT COVER FOR SF4A-H36H |
| FC-SF4A-H40 | FRONT PROTECT COVER FOR SF4A-H40 |
| FC-SF4A-H40-H | FRONT PROTECT COVER FOR SF4A-H40H |
| FC-SF4A-H48 | FRONT PROTECT COVER FOR SF4A-H48 |
| FC-SF4A-H48-H | FRONT PROTECT COVER FOR SF4A-H48H |
| FC-SF4A-H56 | FRONT PROTECT COVER FOR SF4A-H56 |
| FC-SF4A-H56-H | FRONT PROTECT COVER FOR SF4A-H56H |
| FC-SF4A-H64 | FRONT PROTECT COVER FOR SF4A-H64 |
| FC-SF4A-H64-H | FRONT PROTECT COVER FOR SF4A-H64H |
| FC-SF4A-H72 | FRONT PROTECT COVER FOR SF4A-H72 |
| FC-SF4A-H72-H | FRONT PROTECT COVER FOR SF4A-H72H |
| FC-SF4A-H8 | FRONT PROTECT COVER FOR SF4A-H8 |
| FC-SF4A-H80 | FRONT PROTECT COVER FOR SF4A-H80 |
| FC-SF4A-H80-H | FRONT PROTECT COVER FOR SF4A-H80H |
| FC-SF4A-H88 | FRONT PROTECT COVER FOR SF4A-H88 |
| FC-SF4A-H88-H | FRONT PROTECT COVER FOR SF4A-H88H |
| FC-SF4A-H8-H | FRONT PROTECT COVER FOR SF4A-H8H |
| FC-SF4A-H96 | FRONT PROTECT COVER FOR SF4A-H96 |
| FC-SF4A-H96-H | FRONT PROTECT COVER FOR SF4A-H96H |
| MC-SF4AH-12 | PROTECTIVE ENCLOSURE FOR SF4-AH12 |
| MC-SF4AH-16 | PROTECTIVE ENCLOSURE FOR SF4-AH16 |
| MC-SF4AH-20 | PROTECTIVE ENCLOSURE FOR SF4-AH20 |
| MC-SF4AH-24 | PROTECTIVE ENCLOSURE FOR SF4-AH24 |
| MC-SF4AH-28 | PROTECTIVE ENCLOSURE FOR SF4-AH28 |
| MC-SF4AH-32 | PROTECTIVE ENCLOSURE FOR SF4-AH32 |
| MC-SF4AH-36 | PROTECTIVE ENCLOSURE FOR SF4-AH36 |
| MC-SF4AH-40 | PROTECTIVE ENCLOSURE FOR SF4-AH40 |
| MC-SF4AH-48 | PROTECTIVE ENCLOSURE FOR SF4-AH48 |
| MC-SF4AH-56 | PROTECTIVE ENCLOSURE FOR SF4-AH56 |
| MC-SF4AH-64 | PROTECTIVE ENCLOSURE FOR SF4-AH64 |
| MC-SF4AH-72 | PROTECTIVE ENCLOSURE FOR SF4-AH72 |
| MC-SF4AH-8 | PROTECTIVE ENCLOSURE FOR SF4-AH8 |
| MC-SF4AH-80 | PROTECTIVE ENCLOSURE FOR SF4-AH80 |
| MC-SF4AH-88 | PROTECTIVE ENCLOSURE FOR SF4-AH88 |
| MC-SF4AH-96 | PROTECTIVE ENCLOSURE FOR SF4-AH96 |
| MS-SF2N-5 | MOUNTING BRACKET FOR SF4-A/SF2-N/SF2-A |
| MS-SF4A-H2 | U-SHAPED INTERMEDIATE BACK SUPPORTING BRACKET (2 UNIS/SET) |
| MS-SF4A-H4 | INTERMEDIATE SUPPORTING BRACKET FOR SF4-AH**-H |
| MS-SF4A-L2 | L-shaped intermediate supporting bracket for SF4 (For back mounting) |
| MS-SF4A-L4 | L-shaped intermediate supporting bracket for SF4 (For side mounting) |
| OS-SF4A-H12 | SLIT MASK FOR SF4-AH12 |
| OS-SF4A-H12-H | SLIT MASK FOR SF4-AH12-H |
| OS-SF4A-H16 | SLIT MASK FOR SF4-AH16 |
| OS-SF4A-H16-H | SLIT MASK FOR SF4-AH16-H |
| OS-SF4A-H20 | SLIT MASK FOR SF4-AH20 |
| OS-SF4A-H20-H | SLIT MASK FOR SF4-AH20-H |
| OS-SF4A-H24 | SLIT MASK FOR SF4-AH24 |
| OS-SF4A-H24-H | SLIT MASK FOR SF4-AH24-H |
| OS-SF4A-H28 | SLIT MASK FOR SF4-AH28 |
| OS-SF4A-H28-H | SLIT MASK FOR SF4-AH28-H |
| OS-SF4A-H32 | SLIT MASK FOR SF4-AH32 |
| OS-SF4A-H32-H | SLIT MASK FOR SF4-AH32-H |
| OS-SF4A-H36 | SLIT MASK FOR SF4-AH36 |
| OS-SF4A-H36-H | SLIT MASK FOR SF4-AH36-H |
| OS-SF4A-H40 | SLIT MASK FOR SF4-AH40 |
| OS-SF4A-H40-H | SLIT MASK FOR SF4-AH40-H |
| OS-SF4A-H48 | SLIT MASK FOR SF4-AH48 |
| OS-SF4A-H48-H | SLIT MASK FOR SF4-AH48-H |
| OS-SF4A-H56 | SLIT MASK FOR SF4-AH56 |
| OS-SF4A-H56-H | SLIT MASK FOR SF4-AH56-H |
| OS-SF4A-H64 | SLIT MASK FOR SF4-AH64 |
| OS-SF4A-H64-H | SLIT MASK FOR SF4-AH64-H |
| OS-SF4A-H72 | SLIT MASK FOR SF4-AH72 |
| OS-SF4A-H72-H | SLIT MASK FOR SF4-AH72-H |
| OS-SF4A-H8 | SLIT MASK FOR SF4-AH8 |
| OS-SF4A-H80 | SLIT MASK FOR SF4-AH80 |
| OS-SF4A-H80-H | SLIT MASK FOR SF4-AH80-H |
| OS-SF4A-H88 | SLIT MASK FOR SF4-AH88 |
| OS-SF4A-H88-H | SLIT MASK FOR SF4-AH88-H |
| OS-SF4A-H8-H | SLIT MASK FOR SF4-AH8-H |
| OS-SF4A-H96 | SLIT MASK FOR SF4-AH96 |
| OS-SF4A-H96-H | SLIT MASK FOR SF4-AH96-H |
| SF4A-CC10 | 10M CABLE W/ CONNECTOR FOR SF4-AH (2 CABLES/SET) |
| SF4A-CC3 | 3M CABLE W/ CONNECTOR FOR SF4-AH (2 CABLES/SET) |
| SF4A-CC7 | 7M CABLE W/ CONNECTOR FOR SF4-AH (2 CABLES/SET) |
| SF4A-CCJ10 | EXTENSION CABLE (10M) FOR SF4-AH |
| SF4A-CSL02 | CABLE FOR SERIAL CONNECTION BETWEEN SF4-AH (200MM, 2 CABLES/SET) |
| SF4A-CSL05 | CABLE FOR SERIAL CONNECTION BETWEEN SF4-AH (500MM, 2 CABLES/SET) |
| SF4A-CSL10 | CABLE FOR SERIAL CONNECTION BETWEEN SF4-AH (1M, 2 CABLES/SET) |
| SF4A-CSL30 | CABLE FOR SERIAL CONNECTION BETWEEN SF4-AH (3M, 2 CABLES/SET) |
| SF-HC | HANDY CONTROLLER FOR SF4-AH |