Vsd

[bob]

Hi,

 

I`m using the master/slave combination of PDL frame 7 drive to run my electric motor, 800 k W 400 V. I tried the dc heating feature of the drive to keep my motor warmed. Very nice feature indeeed !That`s working fine, however I noted during the heating process,by scrolling through the digital display, that the master and slave currents on phase u are not equal-20 A master u-phase and 110 A slave u-phase. The currents on the V and W phases of both master and slave are more or less constant around 60-65 A. Anyone noted this phenomenon before.

 

Bob