Brother TC-211

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12 years 2 months ago #49933 by PCW
Replied by PCW on topic Brother TC-211
This indicates that the quadrature signals from the drives are not working or not wired correctly to the 7I77

You can check the quadrature wiring with a voltmeter at the 7I77, for example for the X axis, check at TB3
pins

9 A
10 /A

Measuring between these pins you should read somewhere between 3V and 5V
or -3V an -5V, and if you move the X axis around and stop a few times you should see both
polarities ( + and - )

If you dont see both polarities or you see lower voltages when the axis is not moving,
you have a wiring error or a problem with the source.

continuing to check the X axis B pair, check at TB3
pins

12 B
13 /B

And do the same tests shown above

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12 years 2 months ago #49935 by mblaszkiewicz
Replied by mblaszkiewicz on topic Brother TC-211
No voltage what so ever when moving the x axis on tb3 pins 9-10 or pins 12-13

there was a small apx. .1 volt from pin 9-10 at all times.

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12 years 2 months ago #49937 by PCW
Replied by PCW on topic Brother TC-211
You only measure the voltage when stopped (its expected to be close to 0 when moving)

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12 years 2 months ago #49938 by mblaszkiewicz
Replied by mblaszkiewicz on topic Brother TC-211
nothing for voltage readings. moving or stationary. Just the .1 volts

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12 years 2 months ago - 12 years 2 months ago #49941 by PCW
Replied by PCW on topic Brother TC-211
If the drives are powered and you don't get any quadrature output, this suggests a wiring error of some kind
Last edit: 12 years 2 months ago by PCW.

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12 years 2 months ago - 12 years 2 months ago #49942 by mblaszkiewicz
Replied by mblaszkiewicz on topic Brother TC-211
any idea on how to rewire it from the original schematics I sent over.

Also on z axis if I took readings right from the motor would it work due to the machine having revolvers
Last edit: 12 years 2 months ago by mblaszkiewicz.

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