Guidelines for planning the electrical installation 87
Using power factor compensation capacitors with the
drive
Power factor compensation is not needed with AC drives. However, if a drive is to be
connected in a system with compensation capacitors installed, note the following
restrictions.
WARNING!
Do not connect power factor compensation capacitors or harmonic
filters to the motor cables (between the drive and the motor). They are not meant
to be used with AC drives and can cause permanent damage to the drive or
themselves.
If there are power factor compensation capacitors in parallel with the three phase input of
the drive:
1. Do not connect a high-power capacitor to the power line while the drive is connected.
The connection will cause voltage transients that may trip or even damage the drive.
2. If capacitor load is increased/decreased step by step when the AC drive is connected
to the power line, make sure that the connection steps are low enough not to cause
voltage transients that would trip the drive.
3. Check that the power factor compensation unit is suitable for use in systems with AC
drives, ie, harmonic generating loads. In such systems, the compensation unit should
typically be equipped with a blocking reactor or harmonic filter.
Implementing a safety switch between the drive and the
motor
We recommend to install a safety switch between the permanent magnet synchronous
motor and the drive output. The switch is needed to isolate the motor during any
maintenance work on the drive.
Protecting the contacts of relay outputs
Inductive loads (relays, contactors, motors) cause voltage transients when switched off.
The relay contacts on the drive control unit are protected with varistors (250 V) against
overvoltage peaks. In spite of this, it is highly recommended that inductive loads are
equipped with noise attenuating circuits (varistors, RC filters [AC] or diodes [DC]) in order
to minimize the EMC emission at switch-off. If not suppressed, the disturbances may
connect capacitively or inductively to other conductors in the control cable and form a risk
of malfunction in other parts of the system.
Install the protective component as close to the inductive load as possible. Do not install
protective components at the relay outputs.
Summary of Contents for ACS880-17
Page 1: ...ABB industrial drives Hardware manual ACS880 37 drives ...
Page 3: ......
Page 4: ......
Page 6: ......
Page 16: ...16 ...
Page 30: ...30 Introduction to the manual ...
Page 70: ...70 Mechanical installation ...
Page 105: ...Electrical installation 105 4 5 3 6 7 ...
Page 107: ...Electrical installation 107 5 6 4 3 ...
Page 108: ...108 Electrical installation 7 8 8 ...
Page 109: ...Electrical installation 109 9 10 ...
Page 111: ...Electrical installation 111 2 360 grounding detail a b b 1 5 a 11 b a PE 10 7 5 6 8 ...
Page 117: ...Electrical installation 117 PE 11 8 4 9 11 ...
Page 134: ...134 Control units of the drive ...
Page 140: ...140 Start up ...
Page 142: ...142 Fault tracing ...
Page 154: ...154 Maintenance 4 5 6 7 8 6 10 10 ...
Page 162: ...162 Maintenance 5 6 3 4 7 ...
Page 163: ...Maintenance 163 6 8 7 11 10 9 ...
Page 167: ...Maintenance 167 3 4b 4a 4b 8 ...
Page 185: ...Technical data 185 Declaration of Conformity ...
Page 186: ...186 Technical data ...
Page 196: ...196 Dimensions Dimension drawing examples Frame 1 R8i 1 R8i ...
Page 197: ...Dimensions 197 Frame 1 R8i 1 R8i top cable entry exit H351 H353 ...
Page 198: ...198 Dimensions Frame 1 R8i 1 R8i with brake choppers and resistors D150 D151 ...
Page 199: ...Dimensions 199 Frame 1 R8i 1 R8i with sine output filter E206 ...
Page 200: ...200 Dimensions Frame 2 R8i 2 R8i eg ACS880 37 1110A 3 IP22 ...
Page 201: ...Dimensions 201 Frame 2 R8i 2 R8i eg ACS880 37 1210A 3 IP54 ...
Page 204: ...204 Dimensions Frame 2 R8i 2 R8i with main breaker F255 and top entry top exit H351 H353 1 2 ...
Page 205: ...Dimensions 205 Frame 2 R8i 2 R8i with main breaker F255 and top entry top exit H351 H353 2 2 ...
Page 206: ...206 Dimensions Frame 3 R8i 3 R8i 1 2 ...
Page 207: ...Dimensions 207 Frame 3 R8i 3 R8i 2 2 ...
Page 208: ...208 Dimensions Frame 3 R8i 3 R8i with common motor terminal cubicle H359 1 2 ...
Page 209: ...Dimensions 209 Frame 3 R8i 3 R8i with common motor terminal cubicle H359 2 2 ...
Page 217: ...Dimensions 217 Sine filter E206 cubicle 1000 mm top cable exit ...
Page 221: ...Dimensions 221 Cubicle width 400 mm top cable exit Cubicle width 600 mm bottom cable exit ...
Page 222: ...222 Dimensions Cubicle width 600 mm top cable exit ...
Page 234: ...234 The Safe torque off function ...
Page 244: ...www abb com drives www abb com drivespartners 3AXD50000020437 Rev A EN 2015 02 06 Contact us ...