No need to have the motor connected. I usually only connect the motor once i have programmed the drive and tested the "settings". Most important thing is to make sure you have the motor connected properly
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No need to have the motor connected. I usually only connect the motor once i have programmed the drive and tested the "settings". Most important thing is to make sure you have the motor connected properly
There is no problem with starting the VFD with the spindle disconnected .BUT don't ever disconnect the spindle with the VFD running.Quote:
Originally Posted by Leadhead
Always make sure you fasten (clamp) the spindle cable to a fixed point so that the plug does not move, as a bad connection in the plug or a spark WILL give you a fright and release some money from your wallet
Another thing to remember is to use the correct cable between the drive and motor. I just repaired a machine where the original builder used microphone cable (2.2 Kw Hy water cooled spindle)...besides the fact it's not rated for the voltage imagine the under size re current!!! If you can't confirm the voltage rating of the cable then just don't use it :)
Happened to document it....note also the soldering Attachment 26802
All up and running. Thank you gentlemen.
One more ask :- How do I connect the 12v water pump to the VFD please.
Hi Leadhead
These are the 2 options I thought about
1) Don't bother and have a separate connection for you water pump. Switch it on manually before starting the CNC/VFD. This is what I have done
2) Or operate it through the break-out board on your cnc controller using a relay. You would then issue some Gcode to start the pump before the spindle start Gcode
Hope this helps
Mike
No need to do either of those as it's very easy to let the VFD operate it.Quote:
Originally Posted by MikeyC38
There is relay built into the VFD which can be set up to turn on/off when spindle spins. By default it's set to operate when a fault occurs but with few parameter changes can be set
for on/off.
The relay connections are FB & FC just feed either the positive or Negative of the power going to pump through these terminals.
Then change parameter for these relays to work when Fwd is pressed, I think the parameter is PD52 or 53 but not got the manual in front of me so I can not check.
The relay then just becomes a switch to the pump.
Hi Jazz
As always the font of wisdom for us newbies. I forgot about these ports on the VFD. I was thinking about these to enhance my safety system by getting the relay ( based on your wonderful simple design emergency stop setup) to signal the VFD to stop when the safety button switch is operated.
Cheers
Mike
I'm thinking of adding a slight enhancement to the "pump switched by VFD" thing by sticking a flow sensor in the return line to the reservoir driving a relay. It's then pretty easy to sound an alarm if the pump is energised but insufficient water's flowing.
Yep, that would work and there are various ways it can be done, to be honest. The controller or Bob your using will also play some part in which approach to use.Quote:
Originally Posted by MikeyC38
If I'm using a controller that doesn't have relays built into it then I control a relay for on/off using an Output. I then use this relay to turn the water pump on as well.