Rockwell-automation MMCL Using the Mining, Mineral, and Cement Library Manual de usuario descargar pdf (Pagina 54)

Publication RA-UM002B-EN-P - November 2010

54 Application Examples

Example 3 –

One Group with Two Starts

A Control Group may be started in multiple steps, if the start-up sequence is

interrupted by switching the Group's PartRun input ON. In this case, the

CtrlGrp selects the Ready state and waits for a restart command from the

operator.

The diagram below shows how the output RdyAuto from Machine M2, can be

used to interrupt the EnAutoStart command, by control bit B=0 and

Group.PartRun=1. After restarting by the operator, the CtrlGrp starts again

with normal startup warnings. During the startup phase, the EnAutoStart is

cleared by the CtrlGrp and control bit B=1. Now Machine M3 and the

following devices will start in programmed order.

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Rockwell-automation MMCL Using the Mining, Mineral, and Cement Library Manual de usuario Pagina 54