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  1. TheApprentice

    Estop wiring to AC drives

    Hello: Can anyone shed any light on how to properly wire estop circuit to AB 600VAC 3phase AC drive? To be more specific, if you have a field Estop push button, pushing that will deenergize a contactor, and disconnect the output from the drive to the motor. The motor also have brakes that works...
  2. TheApprentice

    Controlling PF 700 drives

    Hello: Can anyone comment on the Pros and Cons of using RIO communication versus using PLC I/O points for controlling AB PF 700 10Hp AC drives ? What have lots of spare I/O points on our PLC 5 rack, and we require start forward/reverse, reset and enable signal to the drive and all the field push...
  3. TheApprentice

    DC tachometer

    Hello All: We are currently using a Tachometer (1000RPM = 100VDC) as a feedback signal into the DC drive package. I was wondering if anyone has seen an application where people tab into this tach signal and feed an undervoltage DC relay where it will tell us if the motor is up to speed. There...

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