Rockwell Automation 20P PowerFlex Digital DC Drive - Manual (Page 69)

Rockwell Automation Publication 20P-UM001I-EN-P - February 2013 69
Installation and Wiring Chapter 1
Frame D Heatsink Cooling Fan Power Supply Terminals
Frame D drives require an external 230V AC power supply for the heatsink
cooling fan. The power supply connections must be taken from the primary side
of the installed Isolation Transformer or Line Reactor (clean power). See Typical
Power Wiring Diagrams on page
46 .
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. The circuit
breaker must be selected to survive the short circuit available current of the feeder
source for this circuit and the inrush current of the fan.
The rating of the circuit breaker should be sized mainly to protect the wiring
from the circuit breaker connections to terminals U3 and V3, and not nuisance
trip or blow from the inrush current.
In addition, a N.C. contact (at terminals 31 and 32) can be connected to an
external device to provide indication of a fan supply failure or can be wired to
drive digital input terminals configured for 14 “Aux Fault” (via Pars 133…144).
Table 22 - Frame D Heatsink Cooling Fan Terminal Designations
Table 23 - Frame D Heatsink Cooling Fan Signal Wire Sizes and Terminal Specifications
Figure 46 - Frame D Heatsink Cooling Fan Terminal Block Location
Terminal Description Maximum Voltage Maximum Current
U3 Single-phase AC input power for cooling fans.
230V AC
2.4…3.3 A
(50/60 Hz)
V3
31 Normally closed contact.
250V AC 1 A
32
PE Safety ground
Terminals Wire Size and Type (1)
(1) See Cable and Wiring Recommendations on page 44 for more information.
Tightening Torque
N
•m (lb•in)
Flexible
(mm
2 )
Multi-core
(mm
2 )
AWG
U3, V3, 31, 32, PE 0.14…1.5 0.14…2.5 28…12 0.5…0.6 (4.4…5.3)
32 31 PE V3 U3
Top of Drive,
Left Side