Mazak QT20 MPG encoder
- dctrytsman
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24 Mar 2023 09:50 #267401
by dctrytsman
Mazak QT20 MPG encoder was created by dctrytsman
I am busy retrofitting a Mazak QT20 Lathe .Currently trying to get the MPG encoder to work .
It has 5 connections to it and is powered by +-12 Volt.
*+12 Volt
*-12 Volt
*Gnd
*A
*B
How do I get this to work with with the Mesa 7i77 ?
It has 5 connections to it and is powered by +-12 Volt.
*+12 Volt
*-12 Volt
*Gnd
*A
*B
How do I get this to work with with the Mesa 7i77 ?
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- tommylight
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24 Mar 2023 10:44 - 24 Mar 2023 10:49 #267404
by tommylight
Replied by tommylight on topic Mazak QT20 MPG encoder
Voltage dividers on encoder outputs.
Using 2 resistors for each output works fine, but it would be safer to also add a 4.7V zener diode to each divider output.
That is if using a high speed encoder input on the Mesa.
If using MPG inputs, probably can skip zeners.
Edit,
You should firt power the encoder and measure output voltage to be sure it does not output negative values.
Mine does not.
Using 2 resistors for each output works fine, but it would be safer to also add a 4.7V zener diode to each divider output.
That is if using a high speed encoder input on the Mesa.
If using MPG inputs, probably can skip zeners.
Edit,
You should firt power the encoder and measure output voltage to be sure it does not output negative values.
Mine does not.
Last edit: 24 Mar 2023 10:49 by tommylight. Reason: more info
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- dctrytsman
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28 May 2023 18:20 #272356
by dctrytsman
Replied by dctrytsman on topic Mazak QT20 MPG encoder
I finally got a chance to work on the machine again ,been offline for so long ..
So I need to divide the voltage so that I get 5v on the outputs ?
Do I connect these outputs to inputs 16 and 17 on software mode 3 ?
How do I configure all of the mpg stuff into linuxcnc ?
So I need to divide the voltage so that I get 5v on the outputs ?
Do I connect these outputs to inputs 16 and 17 on software mode 3 ?
How do I configure all of the mpg stuff into linuxcnc ?
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