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4C will not home

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#57752

4C will not home | 12 January, 2009

A customer of mine has a Quad 4C that will not home in the X. It used to have the problem in the Y then they changed the cards and now that machine will not home in the X when powered up. Anybody have any ideas. I think I know what the problem is, but I wanted to see if anyone else has seen this before?

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RLM

#57755

4C will not home | 13 January, 2009

I am assuming that the card that was changed was the motor driver card. Did they change the card with a known good board or just swap the X and Y cards. If they swapped cards it appears that the card that is now in the X motor slot is bad. Open the access panel to the motor controller cards and check if any of the cards have the red LED indicators on. Red indicates a bad card or if all have red indicators on there is an interlock switch open. Check the fuse on the suspect motor driver card.

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#57756

4C will not home | 13 January, 2009

They claim that they changed both cards, but I would only imagine this happened myself.

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RLM

#57757

4C will not home | 13 January, 2009

They also need to make sure that the switch settings are correct when changing cards. Each motor driver card has a different switch configuration depending on which slot it is installed in.

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#57765

4C will not home | 14 January, 2009

They claim that they confirmed this with PPM. I plan to be at this site next week so I cna have a look for myself. I thought also a potential encoder until they said the problem went from y to x. I have replaced encoders that cause this problem in the past.

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MM

#57792

4C will not home | 15 January, 2009

Sounds like the driver card to me if it switched directions from the Y to the X when they swapped the boards

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#57797

4C will not home | 16 January, 2009

I would have a tendancy to agree with Michelle, but you also might want to check the connector and cable to drivercard.

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