RafaelFalcaro Posted January 30 Share Posted January 30 Hello, I would like to measure the instantaneous voltage (in a PLC, for example) that is on the phases of a stepper motor through the PowerPMAC registers, would it be possible? I can currently measure the current like this: m1_current = sqrt(pow(Motor[1].IaMeas,2)+pow(Motor[1].IbMeas,2))*(33.85/32768) Quote Link to comment Share on other sites More sharing options...
leandro.martins Posted January 31 Share Posted January 31 As far as I know, there isn't a measured voltage directly, since only the currents are necessary to close the current-loop. I think what could be done is using the IaVolts/IbVolt/IcVolts (depending on your system), that are the PWM carriers; or the IqVolts/IdVolts. Both of these approaches only provide you the commanded voltage. 1 Quote Link to comment Share on other sites More sharing options...
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