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Textile machine

 

Situation:

Multiple drives are connected to one DC link  


Problem:

In case of power failure and thus reduction in speed to
<10% the machines stop uncontrollably, leading to yarn
breaking and -clewing. Restarting the machines can take hours, thus high downtime costs occur. Especially in production countries with instable grid power, power failures occur multiple times a day, so there this is an enormous problem.

 

 

Intention:

Controlled stop in case of power failure

thus avoiding long downtimes and high setup- and downtime costs
as well as protecting the machine and saving material.

 

Solution:

> Use of DEV2.0 via "Plug&Play":
   Supplying the drives with the energy that is
   necessary for controlled stops

> Use of NEV to supply the 24V power grid
   for controls and sensorics

 

 

 

Results:

1. Controlled stop of the machine in case of power failure

2. Breaking and clewing yarn is avoided – tremendous time savings when restarting

3. Machine protection and material savings

 

 

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