Re: coolant pump control questions

Hi MArk,

Not sure if I understand yoru question fully.

relay must be sized to or above the motor volts and amps. should be
just that simple. 1hp motor, you need to get a relay that can handle
a 1hp load, not just any 10 map relay.

Relays are usually rated for Amps DC, Amps AC, and Inductive loads or
in hp.

If you are asking about the control wiring of the relay, just look
for a solid state relay in the 5 volt range of the PC, if you are
driving from a PC.

if you cannot find a realy with a good fit, you may considder using a
mini 1/4 amp relay and allow that to drive the coil of a larger relay.

Dave





--- In CAD_CAM_EDM_DRO@yahoogroups.com, "markpowerplus <mabw@b...>"
<mabw@b...> wrote:

> Hi Guys!,
> How do I set up the coolant pump on my 4 axis cnc mill? I am using
> cncpro. Do I use pin 1 and an earth to a relay switching power to

the

> pump? If so what would be a suitable relay specification wise re
> volts and current for the relay? If not ,how? I know how to do the
> software side of things just not the physical side of it.
> thanks
> Mark