Energize Systems with 755TM Bus Supplies and Common Bus Inverters

This procedure applies to systems without 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 without 24V Auxiliary Power and without 240V Control Power
A PowerFlex 755TM bus supply with common bus inverters with callouts indicating power connections and switches.
Before you apply power:
  1. Verify that the control bay switch (D) is in the ‘Off’ position.
  2. Verify that the DC precharge switches (C) are in the ‘Off’ position.
Energize the product in the following sequence:
  1. Leave the control power switches (D) for the common bus inverters in the ‘Off’ position when the drive system is not in operation.
  2. Leave the DC precharge switches (C) for the common bus inverters in the ‘Off’ position when the drive system is not in operation. This step is not required for common bus inverters without DC precharge.
  3. Energize three-phase power (A).
  4. Turn the fused disconnect switch (B) to the ‘On’ position.
  5. Turn the DC precharge switches (C) to the ‘On’ position.
  6. Wait 60 seconds.
  7. Turn the control power switch (D) to the ‘On’ position.
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