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Safety Application Example

Automated Lift Guarding

To guard an area around a lift used to raise and lower auto bodies.

A lift is used to raise and lower parts of an auto body between different levels of the factory. The area around the lift is guarded with hard guard fencing. A system is needed to guard the entrance and exit the auto body uses to pass in and out of the area, and also to detect if a person is standing below the lift.
The MINI-SCREEN is mounted horizontally just a few inches above the floor. This provides an optical “safety mat” across the floor of the lift area.
The MICRO-SCREEN with muting is mounted across the opening to the lift area. The QS18 pairs are mounted in an “X” pattern across the opening, and functions as the muting devices for the MICRO-SCREEN. As the auto body passes out of the lift area, it blocks the QS18 sensors first, which mutes the MICRO-SCREEN allowing the auto body to pass out of the area without stopping transfer skid.

MICRO-SCREEN System with muting – USE/R1224YI with USCC1L2M controller.

MSE/R4824 with MSDINT-1T2 controller
Two QS186E/QS18VN6R opposed-mode sensor pairs.


This application example depicts only generalized guarding and should not be automatically treated as a solution for any particular situation. Every guarding application has a unique set of safety requirements which must be carefully examined. Extreme care is urged to ensure that all safety and legal requirements are met and that all installation instructions are followed.
In addition, any questions regarding safeguarding should be directed to the factory’s own Safety Department or Safety Officer. No responsibility will be taken for use of these examples which are only guidelines to the types of equipment available.