Scorbot ER-III - Homing Errors - Limit Switch wiring shorts





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Uploaded on Nov 28, 2009

Here we have a follow up video regarding issues during a homing sequence for the Scorbot ER-III or similar.

Depending on the amount of use the robot has had, a common issue that I keep seeing with used Scorbots from High Schools and Technical Colleges is issues with the limit switches.

I find that allot of the time, the 12 Pin Umbilical cable that hosts the Limit switches wiring, are prone to develop shorts due to repeated "back & forth" motions, and you end up with an intermittent connection.

Sometimes users misdiagnose this as an Encoder malfunction and can at times believe the problem to be rectified for other reasons. The difference with these issues that you should watch out for is that a "Limit Switch" problem will only occur during a homing sequence. Encoder issues will happen anytime one of the Robot motors is running, whether it be during a homing sequence or during a programing stage.

I find it an absolute MUST!!! to replace the 12 Pin Umbilical cable that is attached to the scorbot chassis. This will just eliminate this possible "shorting" from the equation entirely and speed up your repair process.

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