Rockwell Automation PowerFlex 755TM User Manual

Rockwell Automation Publication DRIVES-AT005D-EN-P - May 2022 57
Appendix A Electrical Ratings, Recommended Protective Devices, and DC Bus Capacitance
Kinetix 5700 Servo Drive, All Configurations
• Do not exceed 208 A DC continuous input current (DC bus bar current rating).
• Only one set of semiconductor protection (SPF) DC input fuses are required for each cluster of common bus drives. Do not exceed 315 A fuse
rating (Bussmann 170M3696 or equivalent).
• The fuse sizes are chosen based on the DC current rating of the drive cluster. Eaton/Cooper Bussmann 170M or FWP series DC rated fuses
are recommended.
Fuse selection guidelines:
- Sum the rated DC input current of each inverter drive connected to the drive 'cluster'. Rated DC input currents can be found in Table 6 on
page 62 (400V AC) or Table 11 on page 69 (480V AC).
- Multiply this sum by x 1.5…2. Choose the next higher rating semiconductor fast acting DC fuse rating.
Example, a 480V AC system with one single-axis 2198-S086-ERSx, 45.7 A DC input amps, one dual-axis 2198-D020-ERSx, 8.5 A DC input amps.
DC input current data is found in Table 11
.
- (45.7ADC + 8.5ADC) x 1.75 = 94.9 ADC
- Choose 100 A semiconductor protection high-speed fuses. Bussmann FWP-100B, 100 A, 700V, or equivalent.
PowerFlex 755TL/TR AC Drives, Frame 5…6
• Required user-supplied AC input and DC output semiconductor protection fuses (SPF). See PowerFlex 750-Series Products with TotalFORCE
Control Technical Data, publication 750-TD100, fuse and circuit breaker data tables for fuse specifications.
• Required user-supplied AC input circuit breaker (CB) with shunt trip (ST) - OR - AC input contactor (N). These devices are controlled by the
bus supply converter onboard digital outputs and user supplied 24V DC power supply. See PowerFlex Drives with TotalFORCE Control
Installation Manual, publication 750-IN100
, for more information.
M M
DC Bus
SPF
Kinetix 5700
Servo Inverters
Bus
Module
Cap
Module
Single
Dual
C
M
AC
Line
AC
Line
CB
ST
- OR -
DS
FU
N
SPF
AC Drive
SPF
P/C
PowerFlex 755TL/TR
AC Drive Frame 5, 6
+DC
-DC
DC
Bus

Rockwell Automation PowerFlex 755TM Specifications

General

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