question volatge siemens drive
07 Oct 2012 17:33 #25108
by jlviloria
Replied by jlviloria on topic Re:question volatge siemens drive
Ok thanks Andy.
On Monday I have high expectations .... I could already move my spindle and axes my hope everything goes well.
Any additional recommendation, I read that it is better to connect a physical emergency stop and not trusted.
something man scares me is that my spindle or my axle are not wanted.
Any recommendations to avoid the increased risk, it is very difficult to square the PID, or is just keep trying. trial and error?
thanks
On Monday I have high expectations .... I could already move my spindle and axes my hope everything goes well.
Any additional recommendation, I read that it is better to connect a physical emergency stop and not trusted.
something man scares me is that my spindle or my axle are not wanted.
Any recommendations to avoid the increased risk, it is very difficult to square the PID, or is just keep trying. trial and error?
thanks
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07 Oct 2012 17:57 #25109
by andypugh
Replied by andypugh on topic Re:question volatge siemens drive
jlviloria wrote:
You could set the maximum output voltages of the 7i77 to be very low. (0.5V) to further slow things down.
The machine should already have one?I read that it is better to connect a physical emergency stop and not trusted.
If you start with only P, and that with a small value, then all that can really go wrong is that the axis might run off in the wrong direction.Any recommendations to avoid the increased risk, it is very difficult to square the PID, or is just keep trying. trial and error?
You could set the maximum output voltages of the 7i77 to be very low. (0.5V) to further slow things down.
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07 Oct 2012 19:42 - 07 Oct 2012 19:43 #25110
by BigJohnT
Replied by BigJohnT on topic Re:question volatge siemens drive
jlviloria wrote:
The method I use is:
verify the encoder goes the correct direction when you move the axis by hand (no power to drive)
verify the drive enable is functioning
verify the axis jogs in the correct direction (might need a tiny bit of P to jog)
For a velocity input drive I tune using halscope to view my progress as shown here:
gnipsel.com/linuxcnc/tuning/servo.html
John
it is very difficult to square the PID, or is just keep trying. trial and error?
The method I use is:
verify the encoder goes the correct direction when you move the axis by hand (no power to drive)
verify the drive enable is functioning
verify the axis jogs in the correct direction (might need a tiny bit of P to jog)
For a velocity input drive I tune using halscope to view my progress as shown here:
gnipsel.com/linuxcnc/tuning/servo.html
John
Last edit: 07 Oct 2012 19:43 by BigJohnT.
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