Machsupport Forum
Mach Discussion => Mach3 under Vista => Topic started by: grandpajay on March 18, 2017, 12:40:08 PM
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I have been running my machine several years, including yesterday. Now I get the emergancy mode active, external estop requested. I have changed the backup file to several days ago, to no effect.
Help please
Jay
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First step would be to thoroughly check your inputs wiring and EStop / Home / Limit switches.
Tweakie.
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I have tried each one by disconnecting the wire one by one, and will try again by disconnecting them all.
Jay
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Hi Jay,
Home / limit switches are generally 'normally closed contact' and wired in series - perhaps yours are wired differently ?
Sometimes mechanical switches go bad and tapping them gently with a screwdriver handle can reveal a problem.
Tweakie.
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With all input pins disconnected, no change. Still get emergancy mode and external estop requested. What is a external estop?
Jay
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Hi Jay,
Are your switches wired as 'normally closed contact' ?
If your switches are 'normally closed contact' and wired in series then disconnecting them is of no help - they must be connected and producing a closed circuit.
Use a multimeter and check your Estop switch ...
Is it closed circuit ?
Press the switch - is it open circuit ?
Release the switch is it closed circuit again ?
Check your other switches the same way.
Tweakie.
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Thank you, one of the limit switches got nocked out of adjustment and was open when it should have been closed.
Thanks again
Jay