180 Rockwell Automation Publication 7000-UM202H-EN-P - November 2023
Appendix A Preventative Maintenance Schedule
Table 21 - PowerFlex 7000 Drive Preventative Maintenance Schedule (Years 11…20)
Period Interval (Years) 11 12 13 14 15 16 17 18 19 20
Air-Cooling System
Door Mounted Air Filters
(1)
(2)
C/RC/RC/RC/RC/RC/RC/RC/RC/RC/R
Main Cooling Fan Motor IIIRFB/RIIIIII
Redundant Cooling Fan Motor (if supplied) IIIRFB/RIIIIII
Small Aux. Cooling Fans “Caravel” IIIIRIIIII
Power Switching
Components
Power Devices (SGCTs/SCRs) IRIIIIIIII
Snubber Resistors/Sharing Resistors/ HECS IIIIIIIIII
Rectifier Snubber Capacitors
(3)(4)
I
I/R
(4)
III
I/R
(4)
III I
Inverter Snubber Capacitors
(5)(6)
IIIIIIIIII
Integrated Gate Driver Power Supply IIIIRFB/RIIIII
Self-Powered SGCT Power Supply (SPS) IIIIRFB/RIIIII
Self-Powered SCR Power Supply (SCR SPGDB) IIIIRFB/RIIIII
Integral
Magnetics/Power
Filters
Isolation Transformer/Line Reactor IIIIMIIIII
DC Link/CMC IIIIMIIIII
Line/Motor Filter Capacitors IIIIMIIIII
Control Cabinet
Components
AC/DC and DC/DC Power Supplies IIIIRFB/RIIIII
Control Boards IIIIIIIIII
Batteries (DCBs and CIB) I R I I R I I R I I
Battery Module (UPS)
(7)
IIIIRIIIII
Connections
Low Voltage Terminal Connections/
Plug-in Connections
IIIIIIIIII
Medium Voltage Connections IIIIIIIIII
Heatsink Bolted Connections IIIIIIIIII
Medium Voltage Connections (Rectifier)
(3)
–
I
(3)
–––
I
(3)
––––
Medium Voltage Connections (Inverter)
(5)
––––––––––
Enhancements
Firmware –Rv––Rv––Rv––
Hardware –Rv––Rv––Rv––
Operational
Conditions
Parameters I Rv I I Rv I I Rv I –
Variables IRvIIRvIIRvI–
Application Concerns IRvIIRvIIRvI–
Spare Parts Inventory/Needs I Rv I I Rv I I Rv I –
(1) If filter supplied is not a washable type, replace filter. If filter supplied is a washable type, wash or replace (depending on state of filter).
(2) These components may be serviced while the VFD is running.
(3) When rectifier snubber capacitors are replaced, the MV connections for the rectifier need to be inspected.
(4) A 4-year rectifier snubber capacitor replacement interval applied only to drives with 6-pulse or 18-pulse rectifiers shipped before 2012 (rectifier snubber capacitors are blue). However,
current enhanced replacement rectifier snubber capacitors extend this to a 10-year replacement interval (replacement rectifier snubber capacitors are black). A 10-year rectifier snubber
capacitor replacement interval has always applied to drives with AFE rectifiers.
(5) When inverter snubber capacitors are replaced, the MV connections for the inverter need to be inspected.
(6) A 10-year inverter snubber capacitor replacement interval applies to all drive configurations.
(7) Replace UPS batteries annually for 50°C rated VFDs.
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