ABB ACS800-17LC, Руководство по оборудованию, Страница: 95 / 182

Planning the electrical installation
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3. Switch the motor power supply from the drive to direct-on-line with S40.
4. Wait for 10 seconds to allow the motor magnetization to die away.
5. Start the motor with S41.
Switching the motor power supply from direct-on-line to drive
1. Stop the motor with S42.
2. Switch the motor power supply from direct-on-line to the drive with S40.
3. Close the main contactor of the drive with switch S11 (-> turn to position ST for
two seconds and leave to position 1).
4. Start the drive and the motor with the drive control panel (drive in local control
mode) or the external start signal (drive in remote control mode).
Protecting the contacts of relay outputs
Inductive loads (such as relays, contactors, motors) cause voltage transients when
switched off.
The relay contacts of the RMIO board are protected with varistors (250 V) against
overvoltage peaks. In spite of this, it is highly recommended to equip inductive loads
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 the protective components at the terminal block.
24 V DC
230 V AC
230 V AC
Varistor
RC filter
Diode
RO (NC)
RO (C)
RO (NO)
RO (NC)
RO (C)
RO (NO)
RO (NC)
RO (C)
RO (NO)
Relay outputs