PowerFlex Digital DC Drive User Manual - Publication 20P-UM001C-EN-P - July 2008
Installation and Wiring 1-11
Control Power Protection
The 115V / 230V AC control circuit power input terminals U2 and V2 are
required to be short circuit protected. This protection can be provided by
using standard time delay fuses or a circuit breaker.
The time delay fuses or 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 drive’s power supply.
The rating of the fuses or circuit breaker should be sized mainly to protect
the wiring from the fuses/circuit breaker connections to terminals U2 and
V2, and not nuisance trip or blow from the inrush current.
The table below lists the input current characteristics of the control power.
Table 1.D Control Power Protection
Control power input should be supplied by a power source that is stabilized
and buffered from the power system transients. The control power of many
drives can be fed from a single source, as long as proper distribution
protection is provided.
Frame
Drive Current
Rating Code
(1)
(1)
Refer to Catalog Number Explanation on page Preface-4, positions 8-10 for corresponding drive HP rating,
armature amp rating and field amp rating.
Control Power Supply
Board ID Power
Rated input current Inrush input current
230V 460V 115V 230V 115V 230V
A
7P0 4P1
SW1-31 60 W 1 A 0.5 A 20 A 10 Athrough through
110 129
B & C
146 167
SW2-32 110 W 1.2 A 0.7 A 15 A 7.5 Athrough through
521 667
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