Rockwell Automation PowerFlex 755TM User Manual

92 Rockwell Automation Publication DRIVES-AT005D-EN-P - May 2022
Appendix A Electrical Ratings, Recommended Protective Devices, and DC Bus Capacitance
Example Three DC Bus Capacitance Calculation
Machine Characteristics
Attribute Value
System Voltage 480V AC
Duty Rating Normal Duty (ND)
Inverter/Drive Products Mixed; PowerFlex 750, PowerFlex 755TM, Kinetix 5700
Drive and System Data
Drive # Product Family Cat. No.
Frame
Size
AC Output
Amps RMS
(1)
(1) Data obtained from Appendix A.
Internal DC Bus
Capacitance (µF)
(1)
1 PowerFlex 755TM 20G1D3D545 8 545 15000
2 PowerFlex 755TM 20G1D3D710 8 710 15000
3 PowerFlex 755 20G11ND8P0 2 8 705
4 PowerFlex 755 20G11ND022 2 22 1020
5 PowerFlex 755 20G11ND034 3 34 1500
6 PowerFlex 755 20G11ND052 4 52 2400
7 PowerFlex 755 20G14ND077 5 77 3600
8 PowerFlex 755 20G14ND186 6 186 9200
9 PowerFlex 755 20G14ND302 7 302 13800
10 Kinetix 5700 2198-S130-ERS3 85 mm 65 840
11 Kinetix 5700 2198-S086-ERS3 85 mm 43 560
12 Kinetix 5700 2198-D032-ERS3 55 mm 26 390
Kinetix 5700 2198-CAPMOD-2240 – – 2240
Totals 2070 66255
Bus Supply PowerFlex 755TM Regenerative Bus Supply 20JxF…E1K5 10 – 45000
External Capacitance 0
Total 111255
Additional Capacitance Calculations
Target µF/A Ratio 40 µF/A 400/480V AC PowerFlex Mixed Products
Calculated µF/A Ratio 53.7 µF/A
Additional Capacitance Required 0 µF Bus Capacitance OK
Sample Bill of Material
Cat. No. Qty. Description
PN-50085 or ER-101011 1 Ground Fault Indicator Filter
20J1F3D2K0LNDNNNNN-P50 1
PowerFlex 755T Bus Supplies, Air Cooled, Regenerative & Low Harmonic Bus Supply (PowerFlex 755TM), Type 1/IP21, Floor Mount,
LD - 1603 HP (2304 A), ND - 1483 HP (2131 A), HD - 1184 HP (1702 A), 480V AC, 3 PH, Frame 10, Standard EMI Protection, Door
Mounted HIM (20-750-C6S) & TotalFORCE Control
20G1D3D545LNDNNNNN-C12 1
PowerFlex 755T Drives, Air Cooled, Common Bus Inverter with DC Precharge (PowerFlex 755TM), Type 1/IP21, Floor Mount, LD -
500 HP (617 A), ND - 450 HP (545 A), HD - 350 HP (454 A), 480V AC, 3 PH, Frame 8, Standard EMI Protection, Door Mounted HIM
(20-750-C6S) & TotalFORCE Control
20G1D3D710MNANNNNN 1
PowerFlex 755T Drives, Air Cooled, Common Bus Inverter with DC Precharge (PowerFlex 755TM), Type 1/IP21, Floor Mount, LD -
650 HP (765 A), ND - 600 HP (710 A), HD - 450 HP (545 A), 480V AC, 3 PH, Frame 8, Standard EMI Protection & Reflected Wave (dV/
dT) Filtering, No HIM & TotalFORCE Control

Rockwell Automation PowerFlex 755TM Specifications

General

Brand	Rockwell Automation
Model	PowerFlex 755TM
Category	DC Drives
Language	English