5i25 w/7i76 external estop setup question
05 Mar 2014 15:53 - 05 Mar 2014 23:42 #44426
by b2unit
5i25 w/7i76 external estop setup question was created by b2unit
there's 2 port in physical estop button one is connected ground of power supply
and another one is connected input0 in 7i76.
I set hal file for external estop. as I know nothing to do with more..
I dont know what is wrong..
when I launched linuxcnc I couldn't change estop button status in left top of the program window.
please have look at my hal file and give me some advice for this situation.
thanks,
Byoungil
and another one is connected input0 in 7i76.
I set hal file for external estop. as I know nothing to do with more..
I dont know what is wrong..
when I launched linuxcnc I couldn't change estop button status in left top of the program window.
please have look at my hal file and give me some advice for this situation.
thanks,
Byoungil
Last edit: 05 Mar 2014 23:42 by b2unit.
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05 Mar 2014 21:22 #44437
by cncbasher
Replied by cncbasher on topic 5i25 w/7i76 external estop setup question
what type of switch are you using ? , is it a nc type ( normaly closed contact )
as this is an estop the convention is to use a nc switch
remove the -not as it does not need to be inverted
as this is an estop the convention is to use a nc switch
remove the -not as it does not need to be inverted
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05 Mar 2014 22:37 #44442
by PCW
Replied by PCW on topic 5i25 w/7i76 external estop setup question
Actually for a NC switch the 7I76 input pin should be inverted,
but you must supply +voltage to the 7I76 input so
+24V --> NC Estop switch pin 1 --> NC Estop switch pin 2 --> 7I76input and other hardware that should be disabled by estop
With this setup , the normal situation is that the 7I76 input is high but goes low on estop so the inverted pin is needed
but you must supply +voltage to the 7I76 input so
+24V --> NC Estop switch pin 1 --> NC Estop switch pin 2 --> 7I76input and other hardware that should be disabled by estop
With this setup , the normal situation is that the 7I76 input is high but goes low on estop so the inverted pin is needed
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05 Mar 2014 23:38 #44443
by b2unit
Replied by b2unit on topic 5i25 w/7i76 external estop setup question
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05 Mar 2014 23:44 #44445
by PCW
Replied by PCW on topic 5i25 w/7i76 external estop setup question
Thats right, though the blue wire may go to other hardware estop logic
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06 Mar 2014 00:20 #44447
by b2unit
Replied by b2unit on topic 5i25 w/7i76 external estop setup question
what's the meaning of other hardware estop logic?
sorry for taking your time..please explain more with example.
thanks,
Byoungil Choi
sorry for taking your time..please explain more with example.
thanks,
Byoungil Choi
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06 Mar 2014 00:32 #44448
by PCW
Replied by PCW on topic 5i25 w/7i76 external estop setup question
For example the blue wire might go to a relay that removes power from axis drives/spindle
when the estop button is hit
(note that if a relay coil and 7I76 input are connected the relay coil must have a flyback diode to prevent high voltage spikes)
when the estop button is hit
(note that if a relay coil and 7I76 input are connected the relay coil must have a flyback diode to prevent high voltage spikes)
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