On 12/30/20 3:21 AM, John Dammeyer wrote:
Input line filters are suggested for a lot of systems that might emit noise back into the power line.
That is the first problem with VFDs - the cost does not include the inductors - both on the line side and the motor side. - You can get away with not using them - but they will often bite you at the worst time - computer crashes - radio interference - voltage spikes can even break other things in your house..
The other problem is while you can slow and speed things up a bit - get in-between speeds for a lot of things - the actual power drops off. If you need continuous duty - you really need a special motor. They are not a substitute for a transmission or fan-belt pulleys..
-- -------------------------------------------------------------------------------- Karl Schmidt EMail [email protected] 3209 West 9th Street Ph (785) 979-8397 Lawrence, KS 66049 -------------------------------------------------------------------------------- _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
