ACS550 User’s Manual
271
Technical data
Motor connections
WARNING!
Never connect line power to the drive output terminals: U2, V2 or W2.
Line voltage applied to the output can result in permanent damage to the drive. If
frequent bypassing is required, use mechanically interlocked switches or contactors.
WARNING!
Do not connect any motor with a nominal voltage less than one half of
the drive’s nominal input voltage.
WARNING!
Disconnect the drive before conducting any voltage tolerance (Hi-Pot)
test or insulation resistance (Megger) test on the motor or motor cables. Do not
conduct these tests on the drive.
Motor connection specifications
Motor connection specifications
Voltage (
U
2
)
0…
U
1
,
3-phase symmetrical,
U
max
at the field weakening point
Frequency
0…500 Hz
Frequency resolution
0.01 Hz
Current
on page
Field weakening point
10…500 Hz
Switching frequency
Selectable. See the availability in the table below.
Cable temperature rating
90 °C (194 °F) rating minimum.
Maximum motor cable
length
Motor cable length for 400 V drives
and
Motor cable length for 600 V drives
on page
.
1, 4 and 8 kHz
12 kHz
208…240 V All types
Frame sizes R1…R4
380…480 V All types, except for
ACS550-01-246A-4 only 1
and 4 kHz
Frame sizes R1…R4,
except ACS550-01-087A-4
and ACS550-U1-097A-4
500…600 V All types
Frame sizes R2…R4
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