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Thread: clearing 300 APC Alarm : B axis need ZRN

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    misco01 Guest

    Default clearing 300 APC Alarm : B axis need ZRN

    I have a DMH-400. I was able to home out x,y,z axis as normal but the b axis has to be homed out in MDI mode but the alarm will not let me. Is there a way to bypass the alarm to home out the b axis. Or change a parrameter.

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    Default Re: clearing 300 APC Alarm : B axis need ZRN

    I assume that did not work with changing the bits 4 and 5? You probably need to have the baxis motor rotated at least once before home position can be set.

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    Default Re: clearing 300 APC Alarm : B axis need ZRN

    Agreed, the B axis need to turn a bit to let the servo Drive / CNC recognize the Absolute Encoder in it, when we have the Battery changed. But what to do when the B is not rotating by any means (even after the Table is unclamped; M11), such as Jog, handwheel or even by trying to Move in ref. mode itself? I am trying to find out what could be the reason, the B axis don't rotate!(all the other axis are fine, able to establish their zero point.) Strange, what interlock, B axis is stumbled with? This issue is seen on a OKK Horizontal Mill, after replacing the dead battery. Do we need to remove the B motor from the machine and rotate its shaft by hand to let the servo Drive / CNC recognize the Absolute Encoder in it so that we can try the B rotation using the CNC later? We are stuck with this issue now..

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