Rockwell-automation 1760 Pico GFX-70 Controllers Quick Start Manuel d'utilisateur télécharger pdf (Page 25)

Publication 1760-QS002A-EN-P - April 2004

Lesson 3 4-3

A rundown time of 4s after the switch off time is required to allow all

packages to completely come off the conveyor belt. This delay is

provided by T2 which activates the switch off as an on-delayed timing

relay. For this we shall modify the circuit diagram as follows:

The output of C1 triggers T2 which then controls M1 in rung 3 instead

of C1.

Input Simulation

You can test the circuit diagram easily by adapting the function of the

input switches to the requirements of the task definition. I1 and I3

should be actuated by momentary make contacts, I2 by a momentary

break contact.

The function of the individual input simulators can be set in the

Simulation View. To do this switch to Simulation View and click the

I/R Function button.

This will open the I/R Function dialog in which you can carry out

the necessary operations for our exercise.

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Rockwell-automation 1760 Pico GFX-70 Controllers Quick Start Manuel d'utilisateur Page 25