Example: position detection – Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual User Manual

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Rockwell Automation Publication 1752-UM001E-EN-P - June 2014

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Function Blocks Command Reference

Appendix D

Figure 70 - Time-difference Input Pattern 2: Exit Timing Chart

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.

Figure 71 - Application Setup

AOPD Input 1 (NC)

AOPD Input 2 (NC)

Muting Signal 11

Muting Signal 12

Output Enable

Muting

Muting Time

Synchronization Time

Muting Signal 21

Muting Signal 22

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

Operator

Controller

IN1

IN0

OFF