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Hbb alarm code in yaskawa L1000E drive

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Cause : Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release comes when both Safe Disable Input channels are open or both Safe Disable Inputs H1 and H2 are open.

  1. Check signal status at the input terminals H1 and H2.
  2. Check the Sink/Source Selection for the digital inputs.
  3. If the Safe Disable function is not utilized, check if the terminals H1-HC, and H2-HC are linked.
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