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Examining the compatibility of the motor and drive
Use an asynchronous AC induction motor, permanent magnet synchronous motor or AC
induction servomotor with the drive. Several induction motors can be connected to the drive
at a time.
Select the motor size and drive type from the rating tables on basis of the AC line voltage
and motor load. Use the DriveSize PC tool if you need to tune the selection more in detail.
Make sure that the motor withstands the maximum peak voltage in the motor terminals. See
section
. For basics of protecting the motor insulation and
bearings in drive systems, see section
Protecting the motor insulation and bearings (page 76)
Note:
•
Consult the motor manufacturer before using a motor whose nominal voltage differs
from the AC line voltage connected to the drive input.
•
The voltage peaks at the motor terminals are relative to the supply voltage of the drive,
not the drive output voltage.
•
If the motor and drive are not of the same size, consider the operation limits of the drive
control program for the motor nominal voltage and current. See the appropriate
parameters in the firmware manual.
■
Protecting the motor insulation and bearings
The drive employs modern IGBT inverter technology. Regardless of frequency, the drive
output comprises pulses of approximately the drive DC bus voltage with a very short rise
time. The pulse voltage can almost double at the motor terminals, depending on the
attenuation and reflection properties of the motor cable and the terminals. This can cause
additional stress on the motor and motor cable insulation.
Modern variable speed drives with their fast rising voltage pulses and high switching
frequencies can generate current pulses that flow through the motor bearings. This can
gradually erode the bearing races and rolling elements.
d
u
/d
t
filters protect motor insulation system and reduce bearing currents. Optional common
mode filters mainly reduce bearing currents. Insulated N-end (non-drive end) bearings
protect the motor bearings.
■
Requirements table
These tables show how to select the motor insulation system and when a drive d
u
/d
t
and
common mode filters and insulated N-end (non-drive end) motor bearings are required.
Ignoring the requirements or improper installation may shorten motor life or damage the
motor bearings and voids the warranty.
76 Guidelines for planning the electrical installation
Summary of Contents for ACS880-07
Page 1: ...ABB industrial drives Hardware manual ACS880 07 drives 560 to 2800 kW ...
Page 2: ......
Page 4: ......
Page 22: ...22 ...
Page 28: ...28 ...
Page 94: ...94 ...
Page 112: ...Electrical installation 109 5 6 4 3 112 Electrical installation ...
Page 113: ...110 Electrical installation 7 8 8 Electrical installation 113 ...
Page 114: ...Electrical installation 111 9 10 114 Electrical installation ...
Page 116: ...Electrical installation 113 4 5 3 6 7 116 Electrical installation ...
Page 118: ...2 11 b PE 10 7 5 6 8 a 360 grounding detail 118 Electrical installation ...
Page 128: ...128 ...
Page 146: ...146 ...
Page 148: ...148 ...
Page 159: ...12 Install and tighten the two M4 12 T20 screws 10 11 12 Maintenance 159 ...
Page 162: ...6 6a 6a 6b 7a 7b 7 8 8a 8b 162 Maintenance ...
Page 166: ...166 Maintenance 6 6 7 8 7 166 Maintenance ...
Page 173: ...6 Reinstall the cover removed earlier and close the cubicle door 4 4 D7T D8T Maintenance 173 ...
Page 213: ... Dimension drawing examples Frame 2 D7T 2 R8i 12 pulse A004 Dimensions 213 ...
Page 214: ...Frame 1 D8T 2 R8i IP22 214 Dimensions ...
Page 215: ...Frame 1 D8T 2 R8i IP54 B055 Dimensions 215 ...
Page 216: ...Frame 1 D8T 2 R8i with common motor terminal cubicle H359 1 2 216 Dimensions ...
Page 217: ...Frame 1 D8T 2 R8i with common motor terminal cubicle H359 2 2 Dimensions 217 ...
Page 218: ...Frame 1 D8T 2 R8i with brake choppers and resistors D150 D151 1 2 218 Dimensions ...
Page 219: ...Frame 1 D8T 2 R8i with brake choppers and resistors D150 D151 2 2 Dimensions 219 ...
Page 220: ...Frame 1 D8T 2 R8i with sine output filter E206 1 2 220 Dimensions ...
Page 221: ...Frame 1 D8T 2 R8i with sine output filter E206 2 2 Dimensions 221 ...
Page 222: ...Frame 2 D8T 2 R8i 12 pulse A004 with grounding switch F259 222 Dimensions ...
Page 223: ...Frame 2 D8T 3 R8i 1 2 Dimensions 223 ...
Page 224: ...Frame 2 D8T 3 R8i 2 2 224 Dimensions ...
Page 225: ...Frame 2 D8T 3 R8i with common motor terminal cubicle H359 1 2 Dimensions 225 ...
Page 226: ...Frame 2 D8T 3 R8i with common motor terminal cubicle H359 2 2 226 Dimensions ...
Page 227: ...Frame 2 D8T 3 R8i with top entry top exit H351 H353 1 2 Dimensions 227 ...
Page 228: ...Frame 2 D8T 3 R8i with top entry top exit 2 2 228 Dimensions ...
Page 229: ...Frame 3 D8T 4 R8i 1 2 Dimensions 229 ...
Page 230: ...Frame 3 D8T 4 R8i 2 2 230 Dimensions ...
Page 231: ...Frame 3 D8T 4 R8i with common motor terminal cubicle H359 1 2 Dimensions 231 ...
Page 232: ...Frame 3 D8T 4 R8i with common motor terminal cubicle H359 2 2 232 Dimensions ...
Page 233: ...Frame 3 D8T 4 R8i with top entry top exit H351 H353 1 2 Dimensions 233 ...
Page 234: ...Frame 3 D8T 4 R8i with top entry top exit H351 H353 2 2 234 Dimensions ...
Page 235: ...Frame 4 D8T 5 R8i 6 pulse with top entry exit UL Listed C129 1 2 Dimensions 235 ...
Page 236: ...Frame 4 D8T 5 R8i 6 pulse with top entry exit UL Listed C129 2 2 236 Dimensions ...
Page 237: ... Dimensions of empty cubicles options C199 C200 C201 IP22 IP42 Dimensions 237 ...
Page 238: ...IP54 238 Dimensions ...
Page 243: ... 1000 mm UL CSA top cable entry Dimensions 243 ...
Page 244: ... 1000 mm UL CSA bottom cable entry 244 Dimensions ...
Page 264: ...264 ...
Page 272: ... 272 ...