Motor Connections; Motor Connection Specifications; Ground Fault Protection - ABB ACS550-01 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 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

Ground Fault Protection

ACS550 internal fault logic detects ground faults in the drive, motor, or motor cable.
This fault logic:
• Is NOT a personal safety or fire protection feature.
• Can be disabled using parameter 3017
• Could be tripped by leakage currents (input power to ground) associated with
long high capacitance motor cables.
Motor Connection Specifications
Voltage (U ) 0...U
2
Frequency 0...500 Hz
0.01 Hz
Current See "Ratings" on page 215.
10...500 Hz
Selectable: 1, 4, 8, or 12 kHz
90 °C (194 °F) rating minimum.
Frame Size
R1
Length
R2...R4
R5...R6
* Warning! Using a motor cable longer than specified in the
chart above may cause permanent damage to the drive.
, 3-phase symmetrical, U
1 max
Max. Motor Cable Length*
f = 1 or 4 kHz
sw
100 m 330 ft
200 m 650 ft
300 m 980 ft
EARTH FAULT
at the field weakening point
f = 8 kHz or 12 kHz
sw
100 m 330 ft
100 m 330 ft
150 m 490 ft
.
Technical Data
225