7i76E Spindle configuration

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18 Sep 2025 21:41 #335173 by unknown
Replied by unknown on topic 7i76E Spindle configuration
The OP was supplied with a config as requested for 4axis and a spindle, to 24k I think, by PCW. Even with is he could not get an output, taking this into account PncCONF is not the issue.
If the OP could be so kind as to supply a picture of the wiring of the actual spindle connector and a diagram as well of how he wired it I think that would be quite helpful. This is the second time I have made this request.
To OP seems to have missed or ignored the bit about PWM not being involved in configuring the spindle.
Just making a guess I suspect that spindle + and spindle - are not being supplied with an isolated voltage. If this is the case spindle out with not have a voltage that is in line with the selected spindle speed.
Wiring of the opto isolated outputs can be tackled later.
To reiterate the OP has a config supplied by PCW, which we can take as being gospel and if the board is wired correctly will work.
For testing I would not have the spindle connected, I would just be monitoring the spindle output with a multimeter referenced to spindle - .

This is actually how I went setting up my spindle, but using a smart serial board as I required the servo driver to be some distance from my 7i76 and did not want a small analogue voltage being transmitted over a long cable. Paranoia may have had been high that day.
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18 Sep 2025 22:12 #335174 by PCW
Replied by PCW on topic 7i76E Spindle configuration
There is no tension on pins (1-2) (1-3) of the TB4

That means no Spindle output is possible.

The 7I76/7I76E/7I76EU do not supply the 10V.
The spindle output on these cards works as a
potentiometer. Typically the 10V is supplied by
the VFD.
 
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18 Sep 2025 22:36 #335175 by RobotMatic
Replied by RobotMatic on topic 7i76E Spindle configuration
Thank you all for the responses. The VFD GA500 is already installed in the machine and I don’t have it here. I have an LS600 on my work desk which I am using for the tests. I will try to send you the information you are requesting as soon as possible.

PCW !. Thank you for coming back! From the heart!

I advance the board that I am using in the TB4 connector, I believe, as PCW explains, that I am not supplying the 10vcc. I am going to check the LS600.

 
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18 Sep 2025 22:54 #335176 by RobotMatic
Replied by RobotMatic on topic 7i76E Spindle configuration
PncConf works in Live!!!!! it was the language !!!!!!!!!! I am very happy!!!! thank you!!!!!!!!

I continue now with the VFD!!!

Thank you!!!!!!!!!!
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19 Sep 2025 00:24 - 19 Sep 2025 00:32 #335179 by RobotMatic
Replied by RobotMatic on topic 7i76E Spindle configuration
 

It works!!!! The VFD was not sending the voltage!!!.PCW ,Tommyligth,unknowm !!! thank you very much from the heart!!!He learned a great lesson today!! it works !!
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19 Sep 2025 00:55 #335181 by tommylight
Replied by tommylight on topic 7i76E Spindle configuration
Why is your DVM on the floor ??? :) :) :)
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19 Sep 2025 12:30 #335187 by RobotMatic
Replied by RobotMatic on topic 7i76E Spindle configuration
I need to work more organized!! 

Thank you for all the help you gave me!!! I am going out to configure the VFD so I can finish the machine, I am under a lot of pressure!! Thank you!!!!!

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20 Sep 2025 00:18 #335203 by RobotMatic
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20 Sep 2025 01:03 #335205 by PCW
Replied by PCW on topic 7i76E Spindle configuration
I'm a bit concerned about the STEP/DIR wiring.

It appears that the thick white wires are grounding the STEP- and DIR- pins
This should never be done as it shorts out the STEP- and DIR- pins
possible damaging the driver chip.

If STEP- / DIR- are unused, they should be left unconnected.
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20 Sep 2025 12:00 #335209 by RobotMatic
Replied by RobotMatic on topic 7i76E Spindle configuration
 I am going to check the connection, I should have connected TB2 pin 2-4 with the white wires [ Pulse - ] [ Dir - ]  from the Driver. 
the pink cable from the X connector seems to enter pin 2, I need to check!!

 thank you very much for the observation !!!!!!!!!!

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