ABB ACS880 Firmware Manual page 625

No. Name / Range /
Selection
Normal
Reduced
Description
Normal ID run. Guarantees good control accuracy for
all cases. This mode should be selected whenever it is
possible.
Note: If the load torque will be higher than 20% of
motor nominal torque, or if the machinery is not able
to withstand the nominal torque transient during the
ID run, then the driven machinery must be de-coupled
from the motor during a Normal ID run. With the
permanent magnet or SynRM motors the transient
torque value can be up to two times the nominal torque.
Note: Check the direction of rotation of the motor
before starting the ID run. During the run, the motor
will rotate in the forward direction.
WARNING! The motor will run at up to
approximately 50...100% of the nominal speed
during the ID run. MAKE SURE THAT IT IS SAFE
TO RUN THE MOTOR BEFORE PERFORMING THE
ID RUN!
Reduced ID run. This mode should be selected instead
of the Normal or Advanced
• mechanical losses are higher than 20% (i.e. the
motor cannot be de-coupled from the driven
equipment), or if
• flux reduction is not allowed while the motor is
running (i.e. in case of a motor with an integrated
brake supplied from the motor terminals).
With this ID run mode, the resultant motor control in
the field weakening area or at high torques is not
necessarily as accurate as motor control following a
Normal ID run. Reduced ID run is completed faster than
the Normal ID run ( < 90 seconds).
Note: Check the direction of rotation of the motor
before starting the ID run. During the run, the motor
will rotate in the forward direction.
WARNING! The motor will run at up to
approximately 50...100% of the nominal speed
during the ID run. MAKE SURE THAT IT IS SAFE
TO RUN THE MOTOR BEFORE PERFORMING THE
ID RUN!
ID run if
Parameters 625
Def / Type
FbEq 16b / 32b
1
2