Datalogic SG2 M Series Quick Manual

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SG2 Muting Series

Safety light curtains with infrared beams

QUICK GUIDE

This Quick Reference Guide does not replace the Instruction Manual. Download
the Instruction Manual by reading the QR code here or at www.datalogic.com.
Click on Support > Search by product and enter the SG2 family name, then
select your product from the dropdown list. Click on the Manuals & Technical
Literature link to download your Instruction Manual. The Instruction Manual must
be available at all times when installing and working with the product.

SAFETY INFORMATION

The following points must be observed for a correct and safe use of the safety light curtains of the SG2-M
series.

 The stopping system of the machine must be electrically controlled.
 This control system must be able to stop the dangerous movement of the machine within the total machine stopping

time T as per paragraph 1.3.3 of the Instruction Manual and during all working cycle phases.

 Mounting and connection of the safety light curtain must be carried out only by qualified personnel, according to the

indications included in the special sections (refer to sections 2; 3; 4; 5 of Instruction Manual) and in respect to the
applicable Standards.

 The safety light curtain must be securely installed so that access to the dangerous zone is not possible without

interrupting the beams (see chapters 2, 3 of Instruction Manual).

 The personnel operating in the dangerous area must be well-trained and must have adequate knowledge of all the

operating procedures of the safety light curtain.

 The TEST, RESET/RESTART and OVERRIDE buttons must be located outside the protected area as the operator must

check the protected area during all Test, Restart and Override operations.

 Please carefully read the instructions for the correct functioning before powering the light curtain.

Precautions to be observed for the choice and installation of the device

Make sure that the protection level assured by the SG2-M device is compatible with the real danger level of
the machine to be controlled, according to EN ISO 13849-1 and EN 62061.

 The outputs (OSSD) of the ESPE must be used as machine stopping devices and not as command devices. The

machine must have its own START command.

 The dimension of the smallest object to be detected must be larger than the resolution level of the device.
 The ESPE must be installed in a room complying with the technical characteristics indicated in section 11 “Technical

data” of the Instruction Manual.

 Do not place the device near intense and/or flashing light sources and, in particular, close to receiving unit front surface.
 The presence of intense electromagnetic disturbances could jeopardize device operation. This condition has to be

carefully evaluated with the support of the Datalogic Technical service.

 The operating distance of the device can be reduced in presence of smog, fog or airborne dust.
 A sudden change in environment temperature, with very low minimum peaks, can generate a small condensation layer

on the lenses and so jeopardize functioning.

 Reflecting surfaces near the safety light curtain light beam (above, under or lateral) can cause passive reflections that

can jeopardize functioning.

 The safety device must be installed at a distance which is major or equal to the minimum safety distance S to ensure

that the operator cannot reach the dangerous area until the moving dangerous object has been blocked by the ESPE.

The failure to respect the safety distance reduces or cancels ESPE protection function. For more detaile
information about calculation of safety distance, please refer to the Instruction Manual.

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M12 12 pole:

1. 24V (brown)

2. 0V (blue)

3. RESET/RESTART/ALIGN (white)

4. OVERRIDE1 (green)

5. OSSD2 (pink)

6. EDM (yellow)

7. MUTING ENABLE (black)

8. OSSD1 (grey)

9. OVERRIDE2 (red)

10. MUTING LAMP (violet)

11. OVERRIDE STATUS (grey-pink)

12. EARTH (red-blue)

CONNECTIONS

SG2-M RX (Muting Operation)

M12 5 pole:

1. 24V (brown)

2. MUTING2 (white)

3. 0V (blue)

4. MUTING1 (black)

5. N.C. (grey)

SG2-M TX

M12 5 pole:

1. 24V (brown)

2. TEST (white)

3. 0V (blue)

4. EARTH (black)

5. N.C.

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ALIGNMENT PROCEDURE

The alignment between the emitting and the receiving units is necessary to obtain the correct functioning of the light
curtain. A good alignment prevents output instability caused by dust or vibrations.

After correct mechanical mounting and electrical wiring user should proceed to alignment procedure and verify results
according to next table. To enter SG2-M dedicated Alignment Mode activate RESET/RESTART/ALIGN input during
Power-On until OSSD red led blinks.

The alignment is perfect if the optical axes of the first and the last emitting unit beams coincide with the optical axes of the
corresponding elements of the receiving unit.
Both first (near the connector) and last beam are used for optical SYNC.

Indication Rx Led configuration Alignment status

No Sync, check SYNC1

SYNC 1 aligned

SYNC 2 aligned

One ore more

intermediate beam

not aligned

All beams aligned

NONE OFF

NONE OFF

NONE OFF

NONE OFF

BAD

OSSD Status in

Normal operation

ON

All beams aligned

ON

All beams aligned

All beams aligned

ON

EXCELLENT ON

A Keep the receiver in a steady position and set the emitter until the yellow SYNC 1 LED is OFF.
This condition shows the effective alignment of the first synchronisation beam.

B Rotate the emitter, pivoting on the lower optics axis, until the yellow SYNC 2 LED is OFF.

C Delimit the area in which alignment is good and steady through some micro adjustments - for the first and then for the

second unit - so to have the maximum alignment LEVEL () and then place both units in the centre of this area.

D Fix the two units firmly using brackets.

Verify that the LEVEL on the RX unit is as high as possible and beams are not interrupted, then verify that all LEVEL
Led turns OFF if even one single beam is interrupted.

This verification shall be made with the special cylindrical “Test Piece” having a size suitable to the resolution of the
device used (refer to paragraph 2.2.5 “Checks after first installation” of Instruction Manual).

E Switch OFF and ON the device in standard operating mode.

The alignment level is monitored also during device normal operation with the same display (see paragraph 8.1 of
Instruction Manual).
Once the light curtain has been aligned and correctly fastened, the display signal is useful both to check the alignment
and show a change in the environmental conditions (occurrence of dust, light disturbance and so on) via signal level
monitoring.

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