■For your safety
In using the light curtain, please establish a control system to satisfy the below items in order to ensure safety with a total system.

>>Precautions for use

Extensive range of variations available with sensing widths from 168 mm to 1,912 mm 6.614 in to 75.275 in

Two types are available for different minimum sensing object sizes.

Hand protection type SF2B-H□
Minimum sensing object ø27 mm ø1.063 in
(20 mm 0.787 in beam pitch)

Arm / Foot protection type SF2B-A□

Minimum sensing object ø47 mm ø1.850 in
(40 mm 1.575 in beam pitch)

Series connection of up to three sets is possible

Sub-sensors for series connection (optional) can be used to connect up to three sets of light curtains (up to a total of 128 beam channels) maximum; however, the SF2B-A□ allows up to 96 beam channels when two sets are connected, and up to 64 beam channels when three sets are connected).

"ZERO" dead zone. Unit length = protective height, so mounting is possible with no dead zone

The sensing area contains no dead spaces. Even with series connections, there are no dangerous openings at the interfaces between light curtains. This makes a simpler and more compact installation possible.

Note:
The SF2B-H8-□ and SF2B-A4-□ cannot connected in series.

Seamless structure with reduced seam area prevents intrusion of particles such as oil mists and dust

The inner unit is protected by a cylindrical inner case. The seams such as unit and lens surfaces have been greatly reduced, so that particles such as oil mists and dust are prevented from getting in.
[The protective structure is IP65 (IEC).]

Mutual interference is reduced without need for interference prevention lines

The scan timing of the light curtain is automatically shifted in order to reduce mutual interference.

Reducing the number of malfunctions caused by extraneous light

A double scanning method and retry processing are new functions exclusive to SUNX that are effective in eliminating the effect of momentary extraneous light from peripheral equipment.

Equipped with a digital error indicator so that error details can be understood at a glance

The system constantly checks the light curtain for problems such as incorrect cable wiring, disconnection, short-circuits, internal circuit problems, and incoming light problems.
If a problem should occur, details of the error appear on the digital display. Therefore, smooth support is possible if problems occur at startup and during maintenance operations, even if assistance is given via telephone.

Beam-axis alignment indicators show the incident light position at a glance

Beam-axis alignment indicators display the beam channels of the light curtain in four blocks.
The blocks where the beam axes match will light up in red in turn. When all the beam axes receive light, all the LEDs light up green. Furthermore, a stability indicator (STB.) lights up when there is sufficient incoming light.

* When using the SF2B-CB05-B adapter cable, the beam axis alignment indicator of emitter cannot be used.

Adapter cables and adapter mounting brackets are available so that previous peripheral devices for light curtains can still be used

The light curtain SF2-A / SF2-N series, area sensor NA40 series, and SF1-N series can be replaced with the SF2B series using the current mounting holes and connection cables.

Selectable safety circuits

The light curtain unit has a built-in monitoring function for external devices (such as fused relay monitoring).
This supports the construction of light curtain peripheral safety circuits which do not use a safety relay unit, and contributes to reduced costs and a more compact control panel. In addition, a connectable control unit is used, so that a safety circuit that is easy to construct and easy to install can be selected.