Re: Quincy 10 HP compressor and VFD

On Oct 23, 9:01 am, Ignoramus705 <ignoramus...@xxxxxxxxxxxxxxxxxx>
wrote:
The 10 HP compressor is now in my yard. Looking good, but needs a
little cleaning.

I will hopefully receive the VFD on Friday or so. It is a Siemens SED2
18.5 kW rated drive. Assuming it works, I have to set its parameters
and here's where I need a little bit of wisdom.

Specifically, my question is how do I set the acceleration ramp-up so
that it works nicely with the unloaders. My own thinking is that I
should accelerate slowly almost up to the speed when unloaders kick
in, and then accelerate as fast as I can once unloaders do kick in and
the pump starts pumping. Any idea what is the speed when unloaders
kick in?

thanks

i

Hi.
Just for reference, our 5 hp, 220 volt 3 phase, compressor seems to
have zero ramp up. At least it's not detectable when it starts. Seems
to go from zero to full speed instantly. The tank is 60 gal. So,
really don't think acceleration on your compressor should be a
consideration.

Best regards,
Paul

.

Relevant Pages

  • Re: Quincy 10 HP compressor and VFD
    ... my question is how do I set the acceleration ramp-up so ... that it works nicely with the unloaders. ... should accelerate slowly almost up to the speed when unloaders kick ... have zero ramp up. ...
    (rec.crafts.metalworking)
  • Re: Quincy 10 HP compressor and VFD
    ... It is a Siemens SED2 ... that it works nicely with the unloaders. ... should accelerate slowly almost up to the speed when unloaders kick ...
    (rec.crafts.metalworking)
  • Re: Quincy 10 HP compressor and VFD
    ... that it works nicely with the unloaders. ... should accelerate slowly almost up to the speed when unloaders kick ... Depending on the unloader system, it may be entirely pneumatic time delay, ...
    (rec.crafts.metalworking)
  • Re: Quincy 10 HP compressor and VFD
    ... that it works nicely with the unloaders. ... should accelerate slowly almost up to the speed when unloaders kick ... Depending on the unloader system, it may be entirely pneumatic time delay, ...
    (rec.crafts.metalworking)
  • Re: Quincy 10 HP compressor and VFD
    ... I will hopefully receive the VFD on Friday or so. ... It is a Siemens SED2 ... that it works nicely with the unloaders. ... should accelerate slowly almost up to the speed when unloaders kick ...
    (rec.crafts.metalworking)