Huanyang VFD RS485 error is braking too fast.
08 Apr 2023 02:31 - 08 Apr 2023 19:09 #268578
by sliptonic
Huanyang VFD RS485 error is braking too fast. was created by sliptonic
I have a Huanyang VFD connected to my PC with Usb to RS485 converter. Everything works fine most of the time.
During a tool change, the spindle shuts down and the brake is activated, rather aggressively. About 1 time in 3, the spindle will fail to restart. I have to shutdown linuxcnc and restart it. If I launch from a console, I see a modbus communication error cycling like it lost connection.
If, however, I put a wrench on the spindle brake to keep it from activating too fast and let the spindle slow down a bit, the error never occurs. How can I avoid this error?
My entire configuration is here in the master branch: github.com/sliptonic/millstone
During a tool change, the spindle shuts down and the brake is activated, rather aggressively. About 1 time in 3, the spindle will fail to restart. I have to shutdown linuxcnc and restart it. If I launch from a console, I see a modbus communication error cycling like it lost connection.
If, however, I put a wrench on the spindle brake to keep it from activating too fast and let the spindle slow down a bit, the error never occurs. How can I avoid this error?
My entire configuration is here in the master branch: github.com/sliptonic/millstone
Last edit: 08 Apr 2023 19:09 by sliptonic.
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11 Apr 2023 23:07 #268854
by andypugh
Replied by andypugh on topic Huanyang VFD RS485 error is braking too fast.
What controls the spindle brake? Is it an output from the VFD?
Do you have a braking resistor attached?
Do you have a braking resistor attached?
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