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GuardShield™ Type 2 Safety Light Curtain Installation Instructions
Electrical Installation
Connections
Power Supply
The external voltage supply (+24V DC) must meet the requirements of
IEC 61496-1. In addition, the following requirements have to be
fulfilled:
• A short-term power failure of 20 ms must be bridged by the power
supply.
• The power supply has double insulation between the primary and
the secondary side.
• The power supply is protected against overload.
• The power supply corresponds to the guidelines of the EWG
(industrial environment).
• The power supply corresponds to the Low Voltage Directives.
• The grounded conductor of the power supply device must be
connected to a grounded conductor PE.
• The maximum deviation of the voltage levels is 24V DC +/- 20%.
Double insulation
Basic insulation
Output (pink
GuardS
0V (blue)
hield
+24V (brown)
K1
K1
Power
Supply Unit
Unit 1
Reinforced
insulation or
double
Hazardous
EDM Connection
24V
k2
Contactor
Connecting the contact elements to the EDM
Figure 9:
Start/Restart interlock
Note: Start/restart interlock requires a N.O. momentary push button or
key switch.
10
This part of the insulation provides
supplementary insulation against
hazardous voltage levels.
Basic insulation
K2
K2
Motor, etc.
Hazardous voltage level
Basic insulation
Hazardous
Pin 4
5
K1
Contactor
k1
6
Contacts
K2
Original instructions
Reset/restart button
24V
Connecting the reset button/restart button
Figure 10:
Connections [mm (in.)]
Cables/Connectors
The GuardShield Type 2 transmitter connector is a four-pin DC micro
connector offered in cable lengths from 2 to 30 meters. The GuardShield
Type 2 receiver connector is an 8-pin DC micro connector offered in
cable lengths of 2 to 30 meters.
Transmitter Connection
Face View of
Female DC Micro
2
3
1
4
Standard GuardShield Type 2 Receiver Connector
Receiver Connection
Face View of
Female DC Micro
Coils
3
4
2
8
5
1
6
7
Pin 8
Signal
Color
Pin No.
Transmitter
Brown
1
+24V DC
White
2
No Connection
Blue
3
0V DC
Black
4
Machine Test Signal
Signal
Color
Pin No.
Receiver
White
1
Auxiliary Output
Brown
2
+24V DC
Green
3
Ground
Yellow
4
EDM
Grey
5
OSSD 1
Pink
6
OSSD 2
Blue
7
0V DC
Red
8
Start/Restart
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