Allen-Bradley SmartGuard 600 User Manual

Publication 1752-UM001A-EN-P - October 2006
Function Blocks Command Reference 193
Example: Position Detection
In this example application, the workpiece is mounted on a machine
turntable surrounded by a guard fence. The operator can disable the
light-interruption signal of the light curtain safety function to set a
workpiece on the turntable when the machine’s dangerous area is on
the opposite side of the operator.
Application Setup
Configure the local input in the controller as dual channel
complementary.
Program Example
Limit switches 1 and 2 connect to muting signal 11 of the muting
function block using an Estop instruction. Limit switches 1 and 2 are
set to dual channel complementary setting for local inputs to evaluate
the input data from the two switches.
Machine’s Dangerous Area is on the Operator’s Side Machine’s Dangerous Area is on the Opposite Side
Work Platform
Limit Switch 1
(N.O. Contact)
Limit Switch 2
(N.C. Contact)
Light Curtain Light Curtain
Operator
Controller
IN1 IN0
OFF
ON
Work Platform
Limit Switch 1
(N.O. Contact)
Limit Switch 2
(N.C. Contact)
Light Curtain Light Curtain
Operator
Controller
IN1 IN0
OFF
ON
Guard Fence
Guard Fence

Allen-Bradley SmartGuard 600 Specifications

General

Brand	Allen-Bradley
Model	SmartGuard 600
Category	Controller
Language	English