Re: VFD's / Skates, Tim & JohnS.

--- In CAD_CAM_EDM_DRO@y..., "johnhe" <johnhe@s...> wrote:

>
> =I did, the 1.5kW is the power going out to the motor which is 2HP.

I didn't

> make it anymore complicated than it had to be and just said "I need

1.5kW

> coming out on triple phase and I'm using single phase to supply

it." and I

> let them work out all the bits

OK just thought you would have a bigger motor. In which case the 1.5
Yaskawa will do the job great. {NOTE This is the nearest you will
ever get to an apology <g> ]
If you contact me off list I'll check trade prices and do you a good
deal.

> I've felt a grinding halt to my
> plans, the guy wrote back and said he'd plugged it in and the

spindle motor

> spins. The spindle bearings are fine he says but the motor's

bearings are

> noisey. Fine he says if I plan to buy a new motor otherwise they

are cheap

> and easy to replace. Am I about to hear number with three zeros in

it?

No a pair of bearings brand new will be about 25 quid tops but they
will be standard bearings so I'm sure I'll have a couple kicking
around.

Ignore the bit about the fan on the motor as they will go down to 500
rpm Ok without over heating. We run big ink mixers at 12 Hz which on
their motors is 230 rpm all day without any trouble. Plus you still
have the manual speed control to use if you need to get lower.
John S