Electrical Installation - Allen-Bradley GuardShield 440L-T2KA series Installation Instructions Manual

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 has overload protection
• 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
(See note.)
and gray)
Guard
0V (blue)
Shield
+24V
K1
Supply
Unit 1
Reinforced
insulation or
double
Hazardous
insulation
voltage level
EDM Connection
24V
K2
Contactor
Connecting the contact elements to the EDM
Start/Restart interlock
Note: Start/restart interlock requires a N.O. momentary push
button or key switch.
This part of the insulation
provides supplementary
insulation against hazardous
Basic insulation
voltage levels.
K1 K2
Motor, and so on.
K2
Power
Hazardous voltage level
Basic insulation
Hazardous
voltage level
5
Pin 4
K1
Contactor
K1
6
Contacts
K2
Rockwell Automation Publication 440L-IN011B-EN-P - October 2017
Reset/restart button
24V
Connecting the reset button/restart button
Connections [mm (in.)]
Cables/Connectors
The GuardShield™ Type 2 transmitter connector is a four-pin DC
micro connector that is offered in cable lengths from 2...30 m
(6.56...98.4 ft). The GuardShield™ Type 2 receiver connector is an 8-
pin DC micro connector that is offered in cable lengths of 2...30 m
(6.56...98.4 ft).
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
3
Coils
4
2
8 5
1
6
7
GuardShield Type 2 Safety Light Curtain
42 (1.7)
15
(0.5)
Color Pin No.
Brown 1
White 2
Blue 3
Black 4
Color Pin No.
White 1
Brown 2
Green 3
Yellow 4
Gray 5
Pink 6
Blue 7
Red 8
Pin 4
Signal
Transmitter
+24V DC
No Connection
0V DC
Machine Test Signal
Signal
Receiver
Auxiliary Output
+24V DC
Ground
EDM
OSSD 1
OSSD 2
0V DC
Start/Restart
9