Datalogic SG2-B Series User manual

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SG2-B SERIES
Safety light curtains with infrared beams
QUICK GUIDE
SAFETY INFORMATION
The following points must be observed for a correct and safe use
of the safety light curtains of the SG2 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 par. 1.1.3 of the manual included in the CD supplied 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) and in 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 section 2 “Installation mode”).
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 button must be located outside the protected area as the operator must check the protected area
during all Test and Reset 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 device (Type 2) is compatible with the real danger
level of the machine to be controlled, according to EN 954-1 and EN 13849-1.
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 chapter 10 “Technical
data” of the manual included in the CD supplied.
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 jeopardise device operation.
This condition has to carefully evaluated with the support of the DATALOGIC AUTOMATION 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 jeopardise functioning.
The failure to respect the safety distance reduces or cancels ESPE the protection function.
For more detailed information about calculation of safety distance,please refer to the complete manual
contained in the CD supplied.

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CONNECTIONS
RECEIVER (RX) EMITTER (TX)
4
5
3
1
2
0 V
OSSD1
TEST/RESE
T
+24 VDC
OSSD2
34
2 1
NOT USED
0 V
+24 VDC
NOT USED
1 = brown = +24 VDC
2 = white = OSSD 1
3 = blue = 0V
4 = black = OSSD 2
5 = grey = TEST/RESET
1 = brown = +24 VDC
2 = white = NOT USED
3 = blue = 0V
4 = black = NOT USED
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.
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.
The beam used to synchronise the two units is the first after the connector. SYNC is the optics connected with this beam
and LAST is the optics connected to the last beam after the SYNC unit.
Receiver Emitter
Signals are clearly identified through symbols allowing immediate reading, independent of bars directions.
A short description of the signalling LEDs is necessary to avoid misunderstandings.
Two yellow LEDs ( LAST, SYNC) on SG2-B receiver, facilitates the alignment procedure.
During standard operation, the LEDs indicate the safety light curtain status, as shown in the table.
Correct alignment procedure
The light curtain alignment can be effected only after having completed the mechanical installation and the electrical
connections. The following procedure has to be followed:
Check the green LED () and the yellow LED ( ) on the TX unit. If ON, the emitter is running correctly;
Verify that the sensitive area from the safety light curtain is free;
Verify that one of the following conditions is present on the RX unit:
STANDARD CONDITION - NORMAL OP.
Green LED ( ) ON and red LED ( ) OFF. Both yellow LEDs ( ,) are OFF. Units are aligned.
STOP CONDITION - SAFE (BREAK)
Green LED ( ) OFF and red LED ( ) ON.
The status of both yellow LEDs ( ,) does not matter. Units are not aligned.
Continue with the following steps to pass from condition 2 to condition 1:
A Keep the receiver in a steady position and set the emitter until the yellow LED ( SYNC) is OFF.
This condition shows the effective alignment of the first synchronisation beam.
BRotate the emitter, pivoting on the lower optics axis, until the yellow LED ( LAST) is OFF.
Under these conditions, the SAFE LED shall turn ON.
NOTE: Ensure that the green LED ( ) is steady ON.
CDelimit the area in which the green LED ( ) is steady through some micro adjustments - for the first and then for
the second unit - then place both units in the centre of this area.
L
ast optics (LAST)
NORMAL
OP.
SAFE
(BREAK)
NORMAL
OP.
LAST
SYNC ON
First optics = synchronisation
optics (SYNC)

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Fix the two units firmly using brackets.
Verify that the green LED ( ) on the RX unit is ON and beams are not interrupted, then verify that the red LED
() turns ON if even one single beam is interrupted (condition where an object has been detected).
This verification shall be made with the special cylindrical “Test Piece” having a size suitable to the resolution of the
device used.
NOTE: Passing the Test Piece along the whole sensitive area and at any distance from the two units, the red LED
() shall be always ON and never change status.
A daily test is recommended.
DIAGNOSTIC FUNCTIONS
The operator can visualise the operating condition of the light curtains through the four LEDs positioned on the receiver
unit and two LEDs on the emitter unit.
The figure below shows all signalling LEDs modes: OFF, ON and BLINKING.
The operator is able to check the main causes of the system stop and failure, using the same LEDs used for visualising
the functions. For Receiver:
Function Status Meaning LED
TEST
(red ON) Light curtain being tested, the OSSD status shall be OFF
Emission (OSSD ON)
(green ON) Light curtain working and in normal operating conditions
Normal
operation
Interruption (OSSD OFF) (red ON) Light curtain working and in safety block conditions.
Function Type Check and repair LED
OSSD error (yellow and red BLINKING) Check OSSD connections; make sure that they are not in contact with one another or with the supply cables, then Reset. If the failure continues
contact DATALOGIC AUTOMATION
Internal error (red ON
yellow BLINKING) Switch OFF and switch ON the supply circuit; if the failure continues contact DATALOGIC AUTOMATION
Optical error (red ON yellow BLINKING) Reset. If the failure continues contact DATALOGIC AUTOMATION
Error status
No power supply
(LEDs OFF) Check connections and input voltage correct value. If the failure continues contact DATALOGIC AUTOMATION
For Emitter:
Function Status Meaning LED
Test (green ON) Light curtain being tested, the OSSD status shall be OFF
Normal
operation Emission
(green ON
yellow ON) Light curtain working and in normal operating conditions
Function Type Check and repair LED
Internal error (green ON yellow
BLINKING) Switch OFF and switch ON the supply circuit; if the failure continues contact DATALOGIC AUTOMATION
Optical error (green ON yellow blinking) Switch OFF and switch ON the power supply circuit. If the failure continues
contact DATALOGIC AUTOMATION.
Error status
No power supply
(LEDs OFF) Check connections and input voltage correct value. If the failure continues
contact DATALOGIC AUTOMATION
LED ON
LED OFF
LED BLINKING

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ORIGINAL INSTRUCTIONS (ref. 2006/42/EC)
This product is covered by one or more of the following patents.
Italian Patent IT 1,363,719 Additional patents pending
DECLARATION OF CONFORMITY
We DATALOGIC AUTOMATION declare under our sole responsibility that these products are conform to the IEC 61496-1
(2004) and IEC 61496-2 (2006) Standards and successive amendments
WARRANTY
DATALOGIC AUTOMATION warrants its products to be free from defects.
DATALOGIC AUTOMATION will repair or replace, free of charge, any product found to be defective during the warranty
period of 36 months from the manufacturing date.
This warranty does not cover damage or liability deriving from the improper application of DATALOGIC AUTOMATION
products.
DATALOGIC AUTOMATION - Via Lavino 265
40050 Monte S.Pietro - Bologna – Italy
Tel: [phone] - Fax: [phone]
www.automation.datalogic.com e-mail:[email protected]
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830000054 (Rev.D) © Copyright Datalogic 2009-2012