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 still need to have the double safety contactors between the drive and motors or will one contactor be sufficient, or have the contactor(s) on the line side? Thanks in advance.
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