WEG CFW300 VFD Mesa7i76 wiring

Hey all,
I have recently switched to Linuxcnc after years of Mach3 for my milling machine. After many hours of reading and bench testing, I finally got the system hooked up to the machine. Most everything is running well except I am having difficulties hooking up the VFD to the Mesa7i76 card. I am using a WEG CFW300 Micro Drive and I and I referenced the attached wiring diagram. I can’t seem to follow the wiring terminology on where to hook up to the VFD and corollate them to the settings I need to do to the VFD. Any help in wiring the VFD and programming would be very much appreciated. I will try to attached the manuals.
Steve…….

I had to add the VFD manual in a separate post and I could only include a partial manual. Hopefully I included the pages needed.

Wiring would be done according to page 9 and 11.
Programming the vfd would need to read the manual.

Norbert

Thanks for the reply. I understand how to wire the VFD, unfortunately I just cant figure out the wire labels from the Mesa wiring diagram and corollate them to the WEG VFD instructions. The VFD is programed for the most part, I just need to update the FWD/REV, On/Off, to reflect the wiring update. When Ihad it hooked up with Mach3 I only had on/off and rpm control. I don't fully grasp what signals/control the Mesa card is putting out to control each function of the VFD.

If I do interpret it correct it would be:

page 9
MESA
TB4 Signal VFD
Pin 1 GND Pin 7
PIN 2 Target value Pin 8
Pin 3 +10 V Pin 9

page 11
MESA
TB4 Signal VFD
Pin 6 spindle enable Pin 1
Pin 8 reverse Pin 2
Pin 5 GND Pin 5
Pin 7 GND Pin 5

May be you have to invert the signals in the Hal file, as your vfd expect normally open switches

Norbert

Newbynobi,
your reply is exactly what needed, thank you. I just realized I was using your original wiring diagram for the VFD (using the VFD 10v analog to power the TB4 of the mesa card instead of a 12v or 24v source from the VFD) I will have to research if my VFD has that source available, I don't see it anywhere in the manual. I can supply the VFD with 24v under their PNP configuration. Would that be a viable option?

No, Mesa pin does just react as a switch and your vfd just expect a switch, no additional power connection to the spindle pin of the Mesa card, just the 10V from the vfd is needed.

Norbert

Newbynobi,
First off, thank you very much for your time and information. I wired it exactly like you posted and I now have have most of the spindle control working. Start/stop, fwd, and rpm works; however, reverse turns the motor on to minimum rpm (set in the VFD) in the forward direction, I am pretty sure I have the VFD programmed correctly. Could this be a Hal file problem? I have attached my files so maybe some can take a look and give me some hints on what to correct. I included a couple Hal files because I use a Vista imach3 pendant so I had to comment out a bunch of stuff to get Linuxcnc to load.

Please watch the signal
spindle-vel-cmd-rpm
using halshow.

Does this one get negative numbers on reverse?
If so, that signal weil be feeded through pid to spindle-output and if this numbers are also negativ (should be so at this state)
The VFD might get a negative commanded rpm, does not know what to do with that and runs at min

If so, just pass the spindle-output through an abs component and you should be fine.

Norbert

Yes, it does show a negative number. I looked at the hal file and I cant figure out exactly where to add the abs component. I assume you mean something like this?
net spindle-output-abs <= pid.s.output
Could you show me an example?