Rockwell Automation Allen-Bradley PowerFlex 700AFE, User Manual

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70 Rockwell Automation Publication 20Y-UM001F-EN-P - April 2017
Chapter 2 AFE in IP21 Rittal Enclosure – Installation/Wiring
Figure 37 - AFE Frame 10 LCL Filter Common Mode Capacitor Jumper Locations
Frame 13 LCL Filter
The Frame 13 AFE LCL filter contains common mode capacitors that are
referenced to ground. To guard against AFE damage, these devices
must be
disconnected
if the AFE is installed on a high resistance grounded distribution
system, or an ungrounded distribution system where the line-to-ground
voltages on any phase exceed 125% of the nominal line-to-line voltage.
To remove the AFE Frame 13 LCL filter from the IP21 Rittal enclosure, see
the instructions in the PowerFlex Active Front End—Frame 13 Hardware
Service Manual, publication 20Y-TG002 .
To disconnect the common mode capacitors, remove the upper guard and then
remove the jumpers that are shown in Figure 38 . For more information on
ungrounded system installation, see Wiring and Grounding Guidelines for
Pulse Width Modulated (PWM) AC Drives, publication DRIVES-AT001 .
Figure 38 - AFE Frame 13 LCL Filter Common Mode Capacitor Jumper Locations
Remove
Three
Jumpers
Right Side View of
LCL Filter
Remove
Three
Jumpers
ATTENTION: To avoid an electric shock hazard, verify that the voltage on the
bus capacitors has discharged completely before you remove or install any
jumpers. Check the DC bus voltage between the +DC and –DC terminals,
between the +DC terminal and the chassis, and between the –DC terminal
and the chassis. The voltage must be zero for all three measurements.