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Fault code 175 in allen bradley PowerFlex 755 drive

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Cause : Travel Lim Cflct comes when travel limits are in conflict. Both the forward and reverse travel limits indicate that they are simultaneously active.

  1. If digital limits (hardware signals) are in use, ensure that the following forward and reverse digital input pairs are not both off simultaneously: fwd/rev decel travel limit digital inputs and fwd/rev end stop travel limit digital inputs.
  2. The travel limit digital inputs are meant to be connected to normally closed switch contacts, so the digital input status reads an off (0 = False) bit status when the machine is on limit and the switch contact opens.
  3. A possible cause for this condition is loss of common power to both the forward and reverse travel limit switches.
  4. If software travel limits are in use, check the state of the fwd/ rev travel limit bits in P1101 [Trq Prove Setup].
  5. These bits read an on (1 = Enabled) bit status when the machine is on limit. Bit 2 “Decel Fwd” and Bit 4 “Decel Rev” should not be on simultaneously.
  6. Similarly, Bit 3 “End Stop Fwd” and Bit 5 “End Stop Rev” should not be on simultaneously.
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