Motor Connections; Motor Connection Specifications - ABB ACS550 User Manual

ACS550 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 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

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 section
10...500 Hz
Selectable. See the availability in the table below.
208...240 V All types
380...480 V All types, except for
500...600 V All types
90 °C (194 °F) rating minimum.
See sections
length Motor cable length for 600 V drives
, 3-phase symmetrical, U
1 max
Ratings on page 259.
1, 4 and 8 kHz
ACS550-01-246A-4 only 1
and 4 kHz
Motor cable length for 400 V drives
at the field weakening point
12 kHz
Frame sizes R1...R4
Frame sizes R1...R4,
except ACS550-01-087A-4
and ACS550-U1-097A-4
Frame sizes R2...R4
on page 272
on page 273.
Technical data
271
and