Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Len-Tikular on January 30, 2021, 07:01:31 PM

Title: VFD Messed up
Post by: Len-Tikular on January 30, 2021, 07:01:31 PM

I wonder if anyone can help. I'm using a Chinese spindle motor on my Router it's rated at 8amps 400Hz 220V 2pole 24,000RPM,

I'm using the Mitsubishi FR-D720 inverter and I seem to have screwed up the parameter settings.

I need some basic settings to allow me to run my spindle right up to full speed.
I think it all went wrong when I accidentally executed a restore to default condition.
I know it's all wired up correctly as It's been running great for over 10 years and I'm gutted. It's very true, Don't fix what's not broke!!!
Iv'e taken the Liberty of uploading the manual which I thought I'd tried all but to no avail, clearly I have something wrong because I cant achieve speeds above 7k.  I hope someone can help.

Thanks in advance

George

Title: Re: VFD Messed up
Post by: TPS on February 01, 2021, 01:44:42 AM

Looks like you have to increase your Max frequency to 400Hz. inital Setting is 120Hz.

24000 / 400 * 120 = 7200

very Close to your "max" Speed you get now.

Title: Re: VFD Messed up
Post by: Len-Tikular on February 01, 2021, 07:47:14 AM

That did it!!   Never seen it go so fast!  ;D