Rockwell Automation Publication 750-RM003A-EN-P - April 2018 31
Selection Considerations Chapter 1
Figure 5 - PowerFlex 755T Control Bus Configuration (External 240V AC Control Power 
Connector)
Table 5 - Standard and Optional Control Power Comparison
Description PowerFlex 700AFE PowerFlex 755TM Bus Supply
240V AC Primary Control Power (s) Control transformer, 
240V AC,1 PH
(s) Primary 240V AC control bus bars, 100 A, powered 
from user supplied 240V AC, 50/60Hz, 1 PH, neutral 
grounded protected primary control power. See 
Table 6 on page 31
 for PowerFlex 755TM bus supply 
240VAC power requirements.
(o) Control transformer, specify control option code 
(-C1), 240V AC, 1 PH will supply power to primary 
control bus bars. see Specification and Feature 
Comparison on page 33 for PowerFlex 755TM bus 
supply for additional 240V AC power available with the 
(–C1) option installed.
• The PowerFlex 755T packaged product uses the 
primary 240V AC control bus bars to supply 240V AC 
1 PH control power to various circuits. Primary 
control power is required and must be supplied by 
the user or from the optional control transformer.
24V DC Auxiliary Control Power — (s) Auxiliary 24V DC bus bars, 100 A.
• User supplied 24V DC control power. 
see Specification and Feature Comparison
 on 
page 33 for PowerFlex 755TM bus supply 24V DC 
power requirements.
• The PowerFlex 755T packaged product uses these 
bus bars to supply 24V DC auxiliary power to 
various circuits when the 240V AC primary control 
power is shut off.
120/240V AC User Control 
Power
— (s) User 120/240V AC control bus bars, 100 A.
• User supplied 120V AC or 240V AC 1 PH control 
power.
• The User 120/240V AC control power and bus bars 
are not used by PowerFlex 755T product.
Table 6 - PowerFlex 755TM Bus Supply External 240V AC Control Power Requirements
Bus Supply 
Frame
Required (A rms) Required for Optional Wiring Bays (A rms)
IP21 
Enclosure
IP54 
Enclosure
Entry 
(Power Opt Code -P16)
Exit 
(Power Opt Code -P15)
8 8.4 10.4 0.39 —
9 11.215.20.39 —
10 17.5 23.5 0.39 —
11 20.3 28.3 0.39 —
12 26.0 36.0 0.39 —