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  1. Dave B

    Category 3 Safety Circuit with a VFD

    I have a light curtain project and I'm using a Rockwell CR30 Programable Safety Relay. I will have the double contact safety switches and all. I know I need to have 2 safety contactors before the motor. My question is the motors are driven by PowerFlex 40 drives with the Safe Off feature. Do I...

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