Rockwell Automation 21G PowerFlex 750-Series AC Drives - Manual (Page 194)

194 Rockwell Automation Publication 750-IN001N-EN-P - April 2014
PowerFlex 750-Series AC Drives
Drive Power Jumper Configuration
PowerFlex 750-Series drives contain protective MOVs and common mode
capacitors that are referenced to ground. To guard against drive damage and/or
operation problems, these devices must be properly configured according to
Table 29 .
MOV, AC EMI Capacitor, and Common Mode Capacitor Circuits
Figure 102 - MOV and AC EMI Capacitor Phase to Ground (Wall Mount Frames 1…7)
Figure 103 - MOV and AC EMI Capacitor Phase to Ground (Floor Mount Frames 8…10) AC Input
Only
Figure 104 - Common Mode Capacitors to Ground (All Frames)
ATTENTION: To avoid an electric shock hazard, verify that the voltage on the bus
capacitors has discharged completely before servicing.
Frames 1…7: Measure the DC bus voltage at the power terminal block by measuring
between the +DC and -DC terminals (see
Figure 79 and Figure 80 for location) or between
the +DC and -DC test point sockets if equipped. Also measure between the +DC terminal or
test point and the chassis, and between the -DC terminal or testpoint and the chassis. The
voltage must be zero for all three measurements.
Frames 8…10: Measure the DC bus voltage at the DC+ and DC- TESTPOINT sockets on the
front of the power module (see
Figure 83 for location).
R/L1
S/L2
T/L3
1
2 3 4
PE–A
1
2 3 4
R/L1
S/L2
T/L3
1
2 3 4
PE–A1
1
2 3 4
PE–A2
DC+
DC–
PE–B