Danfoss VLT speed via profibus

[mastlog]

Good day,
I am working on VLT drive communicating with PLC over profibus. I am successfully running the drive upto 60Hz by sending the 100% reference signal to the drive (16384 decimal). As far as i know it is possible to run the drive over 60 Hz. I would like to know how can i make this drive to run it on 70 Hz. Do i need to send values above 16384 or it is the parameter within the drive i need to adjust. In case it's about parameters only let me know which parameters should i change.

Thanks in anticipation,
Best Regards,

[peterg70]

perhaps a read of the following might help.

http://www.danfoss.com/NR/rdonlyres/457 ... 111101.pdf

[mastlog]

From the manual as far as i understand we need to increase the maximum output frequency, High speed limit, and the reference range.
Nothing to do with the PLC as we are just sending the % from PLC to the VFD.
I am just confirming it because this is first time i am working on drives. I don't have much experience.

[mohdabshr]

Hi
Look at parameters P202 for out put frequency Hi limit and the maximum reference in parameter P205 that is all for your situation. so If you put p205=60 HZ for example and p202 = 50 HZ then you reference limited to which you put on p202 (50HZ).