Look at my post on drive ready signals. You can use my approach for alarm signals as well. Take a look and see if you understand.
Russ
Yaskawa Wirings
Moderator: cnckeith
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Re: Yaskawa Wirings
24 V / 2200 ohm = 0.011A
0.011 A * 24 V = 0.26 W
Use at least 1/4W resistors.
Actual current and wattage will be slightly lower due to LED voltage drop (which is not specified).
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Re: Yaskawa Wirings
Many thanks Russ you post is very clear, did not see it before.
Will see if I can get one of those Optocouplers boards.
Wish I could use remaining Outputs for more applications.