ABB ACS880-207LC, Hardware Manual

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￭ Charging switch for unit charging
Before closing the DC switch-disconnector [Q11], the user closes the charging switch for
DC-DC unit charging [Q10]. After the precharging completes, the DC switch-disconnector
[Q11] can be closed, and the charging switch [Q10] opened.
Note:
The charging switch [Q10] must be opened before the supply unit can be started.
WARNING! Do not operate the DC switch-disconnectors under load.
WARNING! Do not operate the DC fuse disconnectors under load or under voltage.
WARNING! With frame n×R8i units, both the DC switch-disconnector [Q11] and
the charging switch [Q10] must be opened to disconnect the inverter unit from the
DC link.
￭ DC switch-disconnector for line-up charging
The supply unit can be equipped with a DC switch-disconnector for line-up charging [Q40].
DC switch-disconnector [Q40] is needed for isolating the line-up charging circuit from the
DC link when the supply unit has the DC switch disconnector [Q11] and AC-DC line-up
charging circuit.
￭ PC connection
There is a USB connector on the front of the control panel that can be used to connect a
PC to the drive. When a PC is connected to the control panel, the control panel keypad is
disabled. See also section Connecting a PC.
￭ Fieldbus control
You can control the supply unit through a fieldbus interface if the unit is equipped with an
optional fieldbus adapter, and when you have configured the control program for fieldbus
control with the parameters. For information on the parameters, see the firmware manual.
Note:
To be able to switch the main contactor or breaker and the supply unit on and off (Run
enable signal) through fieldbus, the Run enable command at digital input DI2 must be on
(1). That is the case when the operating switch [S21] is switched to the on (1) position.
Operation principle and hardware description 29