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Rockwell Automation Publication 20P-TD001K-EN-P - January 2021
PowerFlex DC Drive and Field Controller Technical Data
Frame C Heat Sink Cooling Fan Specifications
Frame C drives require an external 230V AC power supply for the heat sink cooling fans. If sourced from the main 3-phase AC input, the
power supply connections must be taken from the primary side of the installed Isolation Transformer or Line Reactor (clean power).
In addition, the fan power input terminals U3 and V3 are required to be short-circuit protected. This protection can be provided by using a
circuit breaker or fuses.
• If a circuit breaker is used, it must be rated for the short-circuit available current of the feeder source for this circuit and the inrush
current of the fan. Size the circuit breaker to help protect the wiring from the circuit breaker connections to terminals U3 and V3, and
not spurious trip or blow from the inrush current.
• If fuses are used, they must be rated for either 230V AC, 2.0 amps (slow blow).
Frame C Heat Sink Cooling Fan Terminal Block Locations
Frame C Heat Sink Cooling Fans Terminal Designations
Terminal
Description
Max Voltage
Max Current
U3
Single-phase AC input power for cooling fans.
230V AC
1 A
V3
Frame C Heat Sink Cooling Fans Wire Sizes and Terminal Specifications
Terminals
Wire Size and Type
(1)
(1) For more information, see Cable and Wiring Recommendations in the PowerFlex Digital DC Drive User Manual, publication
Tightening Torque
N•m (lb•in)
Flexible (mm
2
)
Multicore (mm
2
)
AWG
U3, V3
0.14…1.5
0.14…2.5
26…16
0.4 (3.5)
230V/460V AC Input Frame C
575V/690V AC Input Frame C
Lower, right side of the control