Rockwell Automation 23P PowerFlex Digital DC Drive - Manual (Page 69)

Rockwell Automation Publication 20P-UM001K-EN-P - July 2014 69
Installation and Wiring Chapter 1
Frame C Heatsink Cooling Fan Specifications
Frame C drives require an external 230V AC power supply for the heatsink
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 primarily protect the wiring from the circuit
breaker connections to terminals U3 and V3, and not nuisance trip or
blow from the inrush current.
• If fuses are used, they must be rated for either 230V AC, 2.0 Amps (slow
blow).
Table 21 - Frame C Heatsink Cooling Fans Terminal Designations
Table 22 - Frame C Heatsink Cooling Fans Wire Sizes and Terminal Specifications
Terminal Description Maximum Voltage Maximum Current
U3
Single-phase AC input power for cooling fans. 230V AC 1 A
V3
Terminals Wire Size and Type
(1)
(1) See Cable and Wiring Recommendations on page 43 for more information.
Tightening Torque
N•m (lb•in)
Flexible
(mm
2 )
Multi-core
(mm
2 )
AWG
U3, V3 0.14…1.5 0.14…2.5 26…16 0.4 (3.5)