Checks before first run of VFD

[JAZZCNC]

Usually just to get working you only need to set or check a few parameters. Voltage, current, frequency etc.

What make of VFD is it.?

[d4cnc]

No manufacturer name.. just says: a131nbc-2015

[Clive S]

No manufacturer name.. just says: a131nbc-2015

A picture of the vfd would paint a thousand words

[JAZZCNC]

No manufacturer name.. just says: a131nbc-2015

Show the front please.

[d4cnc]

Another pic. I can open it up too if needed... I can't seem to find any info on this particular model.

[JAZZCNC]

Another pic. I can open it up too if needed... I can't seem to find any info on this particular model.

Ok well I've had one of these before and it's already setup ready to go. Thou it looks like Huanyang VFD it's actually a copy so don't use any of the Huanyang info you see.

[d4cnc]

Ok great. thanks for the info..

Success I think... I can change the Hz alue with the up and down arrows.. and when I click run all is well...

You don't happen to have any info/manual for this unit do you?

If I wanted to run it with a relay, is it a case of shorting FWD to GND? To stop it, opening that short?

To control the speed, with a pot or software, is it a case of feeding in 0-10V to the '10V IN' (referenced to the GND of course)
For a pot, can I use the '10V out' for a voltage divider?

[JAZZCNC]

You don't happen to have any info/manual for this unit do you?

No sorry it went with the machine when sold.

If I wanted to run it with a relay, is it a case of shorting FWD to GND? To stop it, opening that short?

Yes exactly like that. Often your BOB will have relay output on it for this purpose.

To control the speed, with a pot or software, is it a case of feeding in 0-10V to the '10V IN' (referenced to the GND of course)
For a pot, can I use the '10V out' for a voltage divider?

Yes but don't use Gnd. The Analog Speed control is isolated from the inputs and Gnd is tied to these inputs.
Use like this for POT.
10V (OUT) to leg #1
10V (IN) = leg #2
0V = Leg #3 .

If using Speed Reference from external source ie: Via software control then just use 0V & 10V (IN)

[d4cnc]

By GND I mean the terminal block labelled GND.. (My picture was horrendous so no labels could be seen, apologies.. here's another) That is isolated from the mains earth yes..








Is that what you are saying too or are you saying not to use that GND?


I was going to use that GND as reference for both the speed control and the relay to turn the spindle off and on (run)..


Is there anything else that is useful to wire into these terminal blocks? Or just speed and run?


(Actually, just spotted it's a 12V OUT that's available.. will I need to put a dropping resistor in or is it ok with 12V?)

[JAZZCNC]

Ok well looks like the Analog speed control on this VFD isn't isolated so yes you'll use Gnd.

Just use the 5V for Pot