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Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Sensors > Light Curtains / Safety Components > Compact Type 4 Safety Beam Sensor ST4

Compact Type 4 Safety Beam Sensor ST4

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Basic Information

From wide areas to narrow spaces, full support for both safety and productivity!

UL/C-UL , CE , TUV , UKCA Approved
CE ：Machinery Directive, EMC Directive
UKCA ：Machinery Regulations, EMC Regulations
UL : Approved Listing

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※1	The control category differs depending on the configuration and wiring of the external circuit.

Features

Long sensing range of up to 15 m 49.213 ft [Sensor head]

Secures safety of large facilities where installation of guardian fence is difficult.

Series connection of sensors and interference prevention [Sensor head]

The numbers of sensor heads and controllers can be freely adjusted to meet the heights and the required numbers of the protection area.

Beam axis alignment and operation confirmation [Sensor head]

The beam interruption indicator is incorporated in both the emitter and receiver. This indicator can be used not only for operation confirmation but also for beam axis alignment. Moreover, the stability indicator indicates if the incident light intensity exceeds 150 % in stable operation.

Supports beam axis alignment at startup and quick restoration in case of trouble [High-functional type ST4-C12EX]

Light received condition of the sensor heads in series connection can be confirmed by the high-functional controller ST4-C12EX.
In addition, any abnormal sensors during lockout can be identified.

In small openings where safety light curtains cannot be installed

Ensures safety in small openings that are often missed.

Compact sensor head saves space

The Type 4 long sensing range type has a compact size that is equivalent to those of general-purpose photoelectric sensors.

Industry standard mounting pitch [Sensor head]

Having the same mounting pitch as those of general-purpose photoelectric sensors makes model switchovers easy.

Waterproof IP67

Conforming to IP67 rating, the sensor heads can be used safely even at lines where water splashes during washing.

Control of interferences to surrounding sensors [Sensor head]

The emission amount adjuster can be used to reduce the emission to control any interference to the surrounding sensors.

Supports both PNP and NPN polarities [Controller]

A single unit can be used for PNP / NPN output switching, reducing the number of parts that need to be registered.

Easy connector connection [Controller]

Connecting to the sensor head is done using connector connections, which shortens setup and replacement time.

Easy setup requiring no torque control

A spring method is used for the terminal blocks. There is no need to control tightening torques for these terminal blocks.

Connection is possible with a single wire or coil wires.

Removal terminal blocks reduce maintenance time

The work required for reconnecting wiring during maintenance is reduced.

Semiconductor output reduces running costs! [Controller]

Semiconductor output is used for control output. This means there is no need to periodically replace safety relays.

Error details can be understood at a glance! [High-functional type ST4-C12EX]

If a problem should occur, the control output is switched OFF, and the details of the error appear on the digital display.

Three patterns of muting control function for greater safety with no loss in productivity [High-functional type ST4-C12EX]

Sensor heads, muting sensors, and muting lamps connect directly to the controller, so that muting control circuits can be built easily.

Muting pattern No.1 Compliant to international safety standard ISO 12643 for printing industry Muting area can be changed to suit the printing process. This is the optimal muting control for printing machines.

(1)Put in an unfilled palette (Bottom-most muting)

(2)Sample inspect the printing paper (Top-most muting)

(3)Take out the printed material (All muting)

Muting pattern No.2

Set apart only the top-most sensor heads and perform muting control.

Muting pattern No.3

Divide the muting area into two.

Line restarts smoothly after being stopped while muting control was active <Override function> [High-functional type ST4-C12EX]

In case the sensor head has been interrupted by an object or in case there is an emergency stop before the muting conditions have been established, all the sensor heads will be temporarily deactivated following by a smooth restart.

Informs all kinds of operation conditions [High-functional type ST4-C12EX]

In case the muting lamp that is connected to the controller breaks, an alarm will go off. Also, auxiliary outputs that link to the muting function, override function, and control outputs (OSSD) are incorporated.

Auxiliary outputs	Function	Operation
Auxiliary output 1	Muting output	ON when muting function is invalid
Auxiliary output 2	Override output	ON when override function is invalid
Auxiliary output 3	Blown lamp output	ON when muting lamp is in normal condition
Auxiliary output 4	Monitor output	ON when control output is OFF