Datalogic SG4 FIELDBUS Series Quick Manual Download Page 3

 

ALIGNMENT PROCEDURE 

The alignment between the emitting and the receiving units is necessary to 
obtain the correct operation of the light curtain. 
A good alignment prevents outputs instability caused by dust or vibrations. 
The alignment is perfect if the optical axes of the first and the last emitting 
unit's beams coincide with the optical axes of the corresponding elements of 
the receiving unit. 
 
The beam used to synchronize the two units is the closest to the connector.  
Thereon we refer to such beam as SYNC and to the last one as LAST.  
When SYNC beam is not engaged all other beams scan it’s not possible, 
thus it’s mandatory to have SYNC beam aligned and not intercepted.  
 
A LED user Interface provides 
indications about optic alignment 
together with Fieldbus connection 
status. 
LEDs are clearly identified through 
symbols or labels allowing their 
immediate reading, independently of 

bars directions; Find below a short description of LEDs indications about optical 
alignment. For Fieldbus connection LEDs please refer to cfr. 

USER INTERFACE 

AND DIAGNOSTICS

 
The standard installation described hereinafter is the one shown in figure with the bar assembled with the connectors 
pointing down.  
 
Two yellow LEDs (

 LAST, 

 SYNC) on receiver unit facilitate the alignment procedure. 

During standard operation, the LEDs indicate the safety light curtain optical alignment status, as shown in the table. 
 

ALIGNMENT STATUS

 

LED colour 

Symbol 

FREE 

INTERCEPTED 

Yellow 

 

OFF 

ON 

ON 

OFF 

Yellow 

 

OFF 

ON 

OFF 

OFF 

Red/Green 

 

GREEN 

RED 

RED 

RED 

 

 

SYNC ad LAST 

beam engaged 

No intercepted 

Beams 

UNITS not 

aligned 

SYNC engaged 

LAST  not 

aligned 

Units correctly 

aligned but at 

least one 

intermediate 

beam 

intercepted 

 

CORRECT alignment procedure 

The light curtain alignment can be effected only after having completed the mechanical installation and the electrical 
connections as described above. 
Compare alignment results with those given in the following table: 
 

  Check the green LED ( ) and the yellow LED (

) on the TX unit. If  both 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: 

 

1. FREE

 

Alignment LED (

) lit GREEN. 

Both yellow LEDs (

,

) OFF. 

Units are aligned. 

2. INTERCEPTED

 

Alignment LED (

) lit RED. 

The status of both yellow LEDs (

,

) does not matter. 

Units are not aligned. 

 

Summary of Contents for SG4 FIELDBUS Series

Page 1: ...ns 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 SG4 device...

Page 2: ...CONNECTOR 1 24VDC BROWN 2 NOT USED WHITE 3 0 VDC BLUE 4 NOT USED BLACK CN2 SIGNAL ETHERNET POWERLINK PORT1 1 TxD transmit data 2 RxD receive data 3 TxD transmit data 4 RxD receive data CN3 SIGNAL ETH...

Page 3: ...dard installation described hereinafter is the one shown in figure with the bar assembled with the connectors pointing down Two yellow LEDs LAST SYNC on receiver unit facilitate the alignment procedur...

Page 4: ...ly 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 ha...

Page 5: ...OP B xosdd Advanced up to 600mm SG4 xx xxx OP A 150 600 FFFF000D SG4 14_30 15_60 OP A xdd SG4 14_30 15_60 OP A xosdd Advanced from 750mm to 1800mm SG4 xx xxx OP A 750 1800 FFFF000D SG4 14_30 75_180 OP...

Page 6: ...click on SG4 FIELDBUS device and select Change node number set the address from 1 to 240 Select EPL device address in AutomationStudio On device choose same address by setting the two rotary switches...

Page 7: ...ot aligned M Red MASTER uP STATUS OFF Normal operation Blinking ON Error ON uP MASTER Boot Pre op S Red SLAVE uP STATUS see LED S ON Error ON uP SLAVE P Red Green ETHERNET POWERLINK STATUS Green ON no...

Page 8: ...t regarding the final installation Warning This is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measure...

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