I am using a DB25 interface for my stepper motor outputs. While using this are the enable outputs on H2 and H3 still active to use?
If so are the active high or low for enabled?
Enable outputs on Acorn
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Centroid_Tech2
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Re: Enable outputs on Acorn
When selecting the D25 connections in the wizard the behavior of the "Enable" terminals on H2 and H3 are inverted since most stepper drives are enabled by default and need a signal to disable them.Therefore these outputs are pulled low when the axis is NOT enabled. This behavior can be changed in the Advanced Axis Configuration menu.
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ShawnM
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Re: Enable outputs on Acorn
Please tell us what stepper drive you are using, most stepper drives are enabled by default and the ENA connection is not needed.
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kman1967
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Re: Enable outputs on Acorn
Thanks guys. That's the info I need. Although the drives are enabled by default, I am looking to disable them when required.
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Gary Campbell
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Re: Enable outputs on Acorn
.Although the drives are enabled by default, I am looking to disable them when required
Can you explain when that would be?
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tblough
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Re: Enable outputs on Acorn
If you disable drives on an Acorn, you will have to re-home everytime you re-enable the drives. Acorn is an open-loop system.
Cheers,
Tom
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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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ShawnM
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Re: Enable outputs on Acorn
Yes, what he's talking about doing makes no sense at all. Hopefully he'll elaborate on the "why".
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kman1967
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Re: Enable outputs on Acorn
This machine is in our R&D department. As part of the hazard assessment, one of the requirements is the disabling of the drives. It a requirement stipulated by our safety team which I don't have much say in. Honestly, I have found over time it's best just to do than to argue, less headaches.
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Nigelo
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Re: Enable outputs on Acorn
If you have a properly configured E-Stop, this will already do the job or am I missing something?
Hope this helps
Nigel
"You can lead a horse to water but you cannot force it to drink"
Nigel
"You can lead a horse to water but you cannot force it to drink"
Re: Enable outputs on Acorn
I agree with Nigelo. Foremost, your emergency stop circuit should remove power from the stepper drivers. That should reliably ensure that the motors are free of power and torque whenever emergency stop is pressed.