10 Rockwell Automation Publication 750-PM101B-EN-P - April 2022
Chapter 1 Overview
Systems with 755TM Bus Supplies and Common Bus Inverters
This procedure covers 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.
Energize
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.
2. Leave the DC Precharge switches (F) 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.
3. Energize three-phase power (A).
4. Turn the fused disconnect switch (B) to the ‘On’ position.
De-energize
De-energize the product in the following sequence:
1. Turn the fused disconnect switch (B) to the ‘Off’ position.
2. De-energize three-phase power (A). This may not be needed.
3. Leave the Control Power switches (E) for the Common Bus Inverters in
the ‘On’ position when the drive system is not in operation.
4. Leave the DC Precharge switches (F) 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.
(A)
(B)
Three-phase Power
(F) (F)
(E)
Input Bay Power Bay Power Bay Power BayControl
Bay
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