New spindle running in reverse
21 Jan 2023 15:57 - 21 Jan 2023 16:04 #262587
by philcobt
New spindle running in reverse was created by philcobt
I need some help please.
I use LinuxCNC V2.8.2.11 with a USB to RS485 convertor to control the Huanyang VFD with a water cooled 800W Chinese spindle set. All has been running well for 7+ years until I worked on the water system and made the schoolboy error of not replacing the antifreeze. The latest cold snap froze everything solid and ruined the spindle.
I now have a German replacement correctly wired as per their instructions (pins 123 to U,V,W) which I have checked and is correct BUT the spindle runs in reverse.
What is the correct way of overcoming the issue?
1. My memory from college 50+ years ago suggests swapping the U & V connections for a 3 phase motor to reverse it. Is this OK with a VFD and the new spindle?
2. Swapping the cw for ccw and ccw for cw in the custom.hal file listed below
(eg so net spindle-cw spindle.0.forward => vfd.spindle-forward
will read
net spindle-ccw spindle.0.forward => vfd.spindle-forward)
3. Some other method?
Your help will be much appreciated.
Cheers Barry
Custom.hal contents:
loadusr -Wn vfd hy_vfd -n vfd -d /dev/ttyUSB0 -p none -r 9600
net spindle-cmd-rpm-abs => vfd.speed-command
net spindle-cw spindle.0.forward => vfd.spindle-forward
net spindle-ccw spindle.0.reverse => vfd.spindle-reverse
net on spindle.0.on => vfd.spindle-on
I use LinuxCNC V2.8.2.11 with a USB to RS485 convertor to control the Huanyang VFD with a water cooled 800W Chinese spindle set. All has been running well for 7+ years until I worked on the water system and made the schoolboy error of not replacing the antifreeze. The latest cold snap froze everything solid and ruined the spindle.
I now have a German replacement correctly wired as per their instructions (pins 123 to U,V,W) which I have checked and is correct BUT the spindle runs in reverse.
What is the correct way of overcoming the issue?
1. My memory from college 50+ years ago suggests swapping the U & V connections for a 3 phase motor to reverse it. Is this OK with a VFD and the new spindle?
2. Swapping the cw for ccw and ccw for cw in the custom.hal file listed below
(eg so net spindle-cw spindle.0.forward => vfd.spindle-forward
will read
net spindle-ccw spindle.0.forward => vfd.spindle-forward)
3. Some other method?
Your help will be much appreciated.
Cheers Barry
Custom.hal contents:
loadusr -Wn vfd hy_vfd -n vfd -d /dev/ttyUSB0 -p none -r 9600
net spindle-cmd-rpm-abs => vfd.speed-command
net spindle-cw spindle.0.forward => vfd.spindle-forward
net spindle-ccw spindle.0.reverse => vfd.spindle-reverse
net on spindle.0.on => vfd.spindle-on
Last edit: 21 Jan 2023 16:04 by philcobt.
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21 Jan 2023 16:40 #262589
by tommylight
Replied by tommylight on topic New spindle running in reverse
Any of those should do.
Just not both.
Just not both.
The following user(s) said Thank You: philcobt
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21 Jan 2023 19:20 - 21 Jan 2023 19:24 #262601
by JPL
Also, method #3 would be to look at the VFD manual and see if there's a setting for clockwise/counter-clockwise direction. Many VFD will allow you to reverse the default direction of rotation this way
Replied by JPL on topic New spindle running in reverse
What Tommy said is right but I wanted to mention that this doesn't absolutely need to be U & V, you can actually swap ANY two of the three U,V,W connections to reverse direction.1. My memory from college 50+ years ago suggests swapping the U & V connections for a 3 phase motor to reverse it. Is this OK with a VFD and the new spindle?
Also, method #3 would be to look at the VFD manual and see if there's a setting for clockwise/counter-clockwise direction. Many VFD will allow you to reverse the default direction of rotation this way
Last edit: 21 Jan 2023 19:24 by JPL.
The following user(s) said Thank You: tommylight, philcobt
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21 Jan 2023 20:34 #262606
by philcobt
Replied by philcobt on topic New spindle running in reverse
Thanks for your rapid help.
Cheers
Barry
Cheers
Barry
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