ABB ACS880 - Page 532

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
1Normal 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!
Normal
2Reduced ID run. This mode should be selected instead of
the Normal or Advanced ID run if
• 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!
Reduced
532 Parameters