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550-UH User's Manual
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 unit. 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
Frequency Resolution
Field Weakening Point
Switching Frequency
Cable Temperature Rating
Maximum Motor Cable
Motor Connection Specifications
Voltage (U
)
0...U
2
Frequency
0...500 Hz
0.01 Hz
Current
See
10...500 Hz
Selectable: 1, 4, 8, or 12 kHz
(1, 4, or 8 kHz for 600 V, R6 frame size, that is for
A
90 °C (194 °F) rating minimum.
Frame Size
R1
R2 (most)
Length
R6 (600 V)
R3...R4
R5...R6
R7...R8
* WARNING! Using a motor cable longer than specified in the
chart above may cause permanent damage to the drive.
, 3-phase symmetrical, U
1
Ratings
on page 1-299.
550-xx-077A-6 ... A
550-xx-144A-6)
Max. Motor Cable Length*
f
= 1 or 4 kHz
sw
100 m
330 ft
200 m
650 ft
100 m
330 ft
200 m
650 ft
300 m
980 ft
300 m
980 ft
at the field weakening point
max
f
= 8 kHz or 12 kHz
sw
100 m
330 ft
100 m
330 ft
100 m
330 ft
100 m
330 ft
150 m
490 ft
Does not apply
Technical data
1-311
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