Operating modes of the drive
The drive can operate in several operating modes with different types of reference. The
mode is selectable for each control location (Local, EXT1 and EXT2) in parameter group
19.
The following is a general representation of the reference types and control chains. For
detailed diagrams, see chapter Control chain diagrams.
Speed reference
source selection
I
Speed reference
source selection
II
Speed reference
ramping and
shaping
Speed error
calculation
Motor feedback
configuration
Torque reference
source selection
and modification
DC voltage
referencesource
selection and
modification
Process PID
setpoint and
feedback source
selection
Process PID
controller
Frequency
referencesource
selection and
modification
Frequency
reference
modification
DC voltage
reference
modification
Speed controller
Load feedback
and position
counter
configuration
Reference
selection for
torque controller
Operating mode
selection
Torque limitation
Torque
controller
DTC motor
control mode
Scalarmotor
control mode
￭ Speed control mode
The motor follows a speed reference given to the drive. This mode can be used either
with estimated speed as feedback, or with an encoder or resolver for better speed control
accuracy.
Speed control mode is available in both local and external control. It is also available
both in DTC (Direct Torque Control) and scalar motor control modes.
26 Control locations and operating modes
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