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Problem with Juki KE750 servo

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Problem with Juki KE750 servo | 24 January, 2017

Hi everyone,

We bought a used Juki KE a few months ago. Installed it at the beginning of this year, but have some problems with the Z and ROT servos. As soon as the machine is powered on, the ALM04 red led turns on on some of the Z and ROT drivers. If we move one servo to another position, the problem continues with this particular servo. The problem is erratic, and we saw that some servos never fails, we bought three used but working fine servos and replaced the failing ones. Two of the replaced units started to work fine, the third shows the same problem as the replaced one, and one of the remaining servos started to fail. Does anyone know what this ALM04 means? Do these servo units fails so often? Any idea? Thanks to anyone!!!

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