External Control - ABB ACS880 Firmware Manual

Control locations and operating modes 19
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External control

When the drive is in external control, control commands are given through the
fieldbus interface (via or an optional fieldbus adapter module), the I/O terminals
(digital and analog inputs), or optional I/O extension modules.
Two external control locations, EXT1 and EXT2, are available. The user can select
the sources of the start and stop commands separately for each location by
parameters 20.01...20.10. The operating mode can be selected separately for each
location, which enables quick switching between different operating modes, for
example speed and torque control. Selection between EXT1 and EXT2 is done via
any binary source such as a digital input or fieldbus control word (see parameter
19.11 Ext1/Ext2 selection). The source of reference is selectable for each operating
mode separately.