Greetings all,
I have Acorn setup and running on my machine. I have one last detail to work out and that is to have a way to detect "zero speed" on the spindle so that I don't try to change tools while the spindle is running (or coasting down from speed).
The spindle is a typical Chinese 2.2kW air cooled spindle driven with a Haun Yang VFD.
Looked over the suggested schematics from Centroid and didn't see anything there that could help me. Any idea how I can add this basic safety feature?
Thanks!
Chris D
Spindle Zero Speed signal?
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Re: Spindle Zero Speed signal?
Unless your spindle VFD has a zero speed output, your only option is to add a delay after the spindle stop command.
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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Re: Spindle Zero Speed signal?
According to the parameters and terminals, there is one, just not sure how it works. I will be posting a question on that over at CNC Zone.
Thanks
Chris
Thanks
Chris
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Re: Spindle Zero Speed signal?
Not all features shown in the HY manuals have the circuitry installed to enable their use. Even more so with the lesser cost and cloned models.
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Re: Spindle Zero Speed signal?
Do you know of any way to determine if the circuitry exists or not?Gary Campbell wrote: ↑Mon May 17, 2021 10:43 am Not all features shown in the HY manuals have the circuitry installed to enable their use. Even more so with the lesser cost and cloned models.
Chris D
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Re: Spindle Zero Speed signal?
Test to see if it works when connected to an Acorn input, they are usually open collector outputs.
Short of buying a more expensive vfd that's all I know. They usually have a common control schematic in the manual that should get you going.
Short of buying a more expensive vfd that's all I know. They usually have a common control schematic in the manual that should get you going.
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Re: Spindle Zero Speed signal?
This morning I got some time on the machine to figure this out. For my VFD, to get a "relay" type control signal, I used the FB & FC terminals and set parameter 52 to 2. Testing showed the contact operating when the spindle comes to a stop, not just at the STOP signal. This should do the trick for my needs.
Thanks!
Chris D
Thanks!
Chris D