Powerflex 525 - EMC filter option

Hello, I have a basic question. I am looking to order a PF525, and noticed they have an EMC filter option. What is the purpose for adding this filter onto a drive, and under what conditions should one normally use this? Is this similar to a choke?

I read some articles online, but if someone could dumb it down, that would be great.

Thanks,

http://www.plctalk.net/qanda/showthread.php?t=116505

The above thread may help you out.
Regards,

Thanks man, that's exactly what I was looking for. I'll look at cost difference and make a decision from there.

Have a good one!

I agree with what was said in the previous post...

Hahaha thank you for confirming Jraef's post, Jraef