Siemens MasterDriveVC 6SE7021-4EP60

[MCastle69]

Let me start of by saying everything is working good via Profibus and all commands to the drive are working, ie Start/Stop, FWD, Reverse, the only thing that I can't get set is the Speed control, when i change the speed at the HMI it stays the same, no matter what speed i put. I see the drive when it energizes that it send out 9hz-22hz and that is it.
Motor is 460v 60HZ 1800RPM

any help will be greatly appreciated.

Oh, and the drive is a replacement and couldn't connect to the old drive, it is a direct replacement

 

[zbang]

Don't know about that specific drive, but some have a setting for where to get the speed (panel up/down buttons, internal pot, external signal, etc). may want to check that.

 

[Jraef]

You have to program the drive for which speed command source it needs to follow. If you have the drive set to respond to Profibus, or an external analog input, it will ignore the keypad.