Answered: LIGHT CURTAIN

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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1.) LIGHT CURTAIN DISTANCE CALCULATIONS
A mechanical press has a stopping time for its press-brake mechanism of 0.39 sec and a stopping time for the control circuit of 0.06 sec. The brake monitor is set for 0.58 sec, and the minimum object sensitivity is 0.78 in. Calculate the minimum safe distance that the light curtain can be installed from the press.

2.) A robot system has a protective barrier enclosing the work cell area. The total time for the system to come to a full halt after power is removed is 4 seconds, and an additional distance of 1.2 meter is required because of the height of the guard gate would allow operators to reach over it.
Determine the minimum distance from the guard gate to the closed part of the robot work envelope, in meters.
NOTE: 1 meter = 1,000 millimeters

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