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jonlaury
Joined: 06 Nov 2006
Posts: 336
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 Posted: Sun Sep 30, 2007 1:14 pm Post subject: Poor man's hi torque servo circuit |
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[quote]>snipped
[quote]If something else is moving the sheet, allowing S2 to close, then the
motor should restart & run back to 'home' position.The wiper motor's primary function is to actuate a pinch roller, thus engaging the sheet goods to a drive roller that carries them through the machine. S2 is mounted on the pinch roller arm to sense the presence of a sheet. When S2(NC) contacts the sheet and opens, it should stop the wiper motor at BDC. When the sheet passes and S2 closes, the motor activates and moves from BDC to "Park". At least, that's the plan.[b]
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jonlaury
Joined: 06 Nov 2006
Posts: 336
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| Posted: Sun Sep 30, 2007 2:28 pm Post subject: Poor man's hi torque servo circuit |
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[quote]Previous post should have read:>snipped>If something else is moving the sheet, allowing S2 to close, then the
| Quote: | | motor should restart & run back to 'home' position.Charlie,That's the idea. What I don't know how to do is how to use the closed S1 as a signal for the wiper motor to start AND remain powered until S2 senses the sheet and shuts off power to the wiper motor, now at BDC. S1 drops out of the sheet path and opens so I can't use it in series with S2. |
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