De-energize Systems with 24V Auxiliary Power and without Separate 240V Control Power

Bus supplies ordered with the -C1 control transformer option do not require separate 240V control power.
PowerFlex 755TM System with 24V Auxiliary Power
A PowerFlex 755TM bus supply with common bus inverters with callouts indicating power connections and switches.
De-energize the product in the following sequence:
  1. Leave the control power switches (E) for the common bus inverters in the ‘On’ position when the drive system is not in operation. This is not needed if 24V auxiliary power (C) remains energized. If 24V is removed, the control power switch (E) should be ‘Off’.
  2. Leave the DC precharge switches (D) for the common bus inverters in the ‘On’ position when the drive system is not in operation. This step is not required for common bus inverters without DC precharge. If 24V is removed, the DC precharge switch (D) should be ‘Off’.
  3. Turn the fused disconnect switch (B) to the ‘Off’ position.
  4. De-energize three-phase power (A). This may not be needed.
  5. Leave 24V auxiliary power (C) energized when the drive is not in operation.
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