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Technical manual: SQUARE 940-2
DICTATOR Technik GmbH · +49 (0)821 246730 · [email protected] · www.dictator.de · 22.06.22
4.14 LIGHT BARRIERS / LIGHT CURTAIN
The light barrier input of the controller can communicate with different types of photocells or
light barriers.
The alignment can be adjusted in the Safety devices menu. The received signal strength is
displayed as a number. Move the transmitter until the highest possible value is reached. The
minimum value for the system to function is 3. Now try to trigger the light barrier while the door
is closing to ensure proper operation.
The Limit Setup › Photocell disable position setting can be used to ignore the light barrier at a
user-defined position.
The SQUARE 940-2 supports various light curtains/laser scanners with test function. As exam-
ples you find the following schemes for the connection of the laser scanners BEA LZR:
Terminal
Color
Signal
Description
X3.7
green
+24 V
Supply
X3.8
brown
0 V
Supply
X1.2/4*
pink
Protection
Relay 2
X1.1/3*
violet
Protection
Relay 2
X3.7/7*
red
+24 V
Test**
X3.9/10*
blue
0 V
Test
X4.10/10*
yellow
STOP NO
Relay 1**
X5.1-10/1-10*
white
+24 V
Relay 1**
*Two laser scanners can be connected and tested per controller. Please note that if two laser
scanners are used, the power supply must be provided by an external, separate power supply
unit. For further information, please refer to the operating manual of the laser scanner.
**Double assignment
Possible configurations with 2 laser scanners:
SE1 X1.1 / X1.2 Safety during OPENING and/or CLOSING -> STOP
SE2 X1.3 / X1.4 Safety during OPENING and/or CLOSING -> STOP
Or:
SE1 X1.1 / X1.2 Safety during CLOSING -> STOP/REVERSING
SE2 X1.3 / X1.4 Safety during OPENING and/or CLOSING -> STOP
Possible configurations with 1 laser scanner:
SE1 X1.1 / X1.2 Safety during OPENING and/or CLOSING -> STOP
Or:
SE1 X1.1 / X1.2 Safety during CLOSING -> STOP/REVERSING
Further information can be found under item V/12 System Setup - Safety Devices.
LZR-I100/-110
