
Planning the electrical installation 59
Protecting the contacts of relay outputs
Inductive loads (relays, contactors and motors) cause voltage transients when
switched off. The voltage transients can connect capacitively or inductively to other
conductors and cause a malfunction in the system.
Use a noise attenuating circuit (varistors, RC filters [AC] or diodes [DC]) to minimize
the EMC emission of inductive loads at switch-off. Install the noise attenuating circuit
as close to the inductive load as possible. Do not install a noise attenuating circuit at
the relay output.
1
Relay output
2
Varistor
3
RC filter
4
Diode
1
2
3
230 V AC
+ 24 V DC
4
230 V AC
Содержание ACS380 Series
Страница 1: ...ABB MACHINERY DRIVES ACS380 drives Hardware manual...
Страница 4: ......
Страница 12: ...12 Table of contents...
Страница 20: ...20 Safety instructions...
Страница 46: ...46 Mechanical installation...
Страница 60: ...60 Planning the electrical installation...
Страница 86: ...86 Maintenance...
Страница 120: ...120 Technical data...
Страница 122: ...122 Dimension drawings Frame R0 1 phase 230 V...
Страница 123: ...Dimension drawings 123 Frame R0 400 V...
Страница 124: ...124 Dimension drawings Frame R1 230 V...
Страница 125: ...Dimension drawings 125 Frame R1 3 phase 230 V and 3 phase 400 V...
Страница 126: ...126 Dimension drawings Frame R2 230 V...
Страница 127: ...Dimension drawings 127 Frame R2 400 V...
Страница 128: ...128 Dimension drawings Frame R3 400 V...
Страница 129: ...Dimension drawings 129 Frame R4 400 V...
Страница 130: ...130 Dimension drawings...
Страница 138: ...138 Resistor braking...
Страница 169: ...BTAC 02 pulse encoder interface module 169 Dimensions 3AXD50000031154 rev A...
Страница 170: ...170 BTAC 02 pulse encoder interface module...