Program features 39
External control
When the drive is in external control, control commands are given through
• the I/O terminals (digital and analog inputs), or optional I/O extension modules
• the fieldbus interface (via the embedded fieldbus interface or an optional fieldbus
adapter module).
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 setting
parameters
. The operating mode can be selected separately for each
location, which enables quick switching between different operating modes, for
example speed and process PID control. Selection between EXT1 and EXT2 is done
via any binary source such as a digital input or fieldbus control word (parameter
). The source of reference is selectable for each operating mode
separately.
Communication fail functionality
The communication fail functionality ensures continuous process without
interruptions. If there is a communication loss, the drive automatically changes the
control location from EXT1 to EXT2. This enables process to be controlled, for
example, with the drive PID controller. When the original control location recovers,
the drive automatically switches control back to the communication network (EXT1).
Settings
• Parameters
(page
);
…
).
Summary of Contents for ACQ580
Page 1: ...ABB drives for water Firmware manual ACQ580 pump control program ...
Page 4: ... 2017 ABB Oy All Rights Reserved 3AXD50000035867 Rev C EN EFFECTIVE 2017 06 21 ...
Page 30: ...26 Start up control with I O and ID run ...
Page 40: ...36 Default configuration ...
Page 304: ...300 Parameters ...
Page 340: ...336 Additional parameter data ...