ABB ACS850 Firmware Manual page 17

Check the direction of rotation of the motor before starting
the ID run. During the run (Normal or Reduced), the motor
will rotate in the forward direction.
Select the motor identification method by parameter
Idrun mode. During the Motor ID run, the drive will identify
the characteristics of the motor for optimum motor control.
The ID run is performed at the next start of the drive.
Notes:
• The motor shaft must NOT be locked and the load
torque must be < 20% during Normal or Reduced ID
run. With permanent magnet motor this restriction
applies also when Standstill ID run is selected.
• Mechanical brake is not opened by the logic for the ID
run.
• The ID run cannot be performed if parameter
Motor ctrl mode = Scalar.
NORMAL ID run should be selected whenever possible.
Note: The driven machinery must be de-coupled from the
motor with Normal ID run:
• if the load torque is higher than 20%, or
• if the machinery is not able to withstand the nominal
torque transient during the ID run.
The REDUCED ID run should be selected instead of the
Normal ID run if the mechanical losses are higher than
20%, i.e. the motor cannot be de-coupled from the driven
equipment, or full flux is required to keep the motor brake
open (conical motor).
The STANDSTILL ID run should be selected only if the
Normal or Reduced ID run is not possible due to the
restrictions caused by the connected mechanics (e.g. with
lift or crane applications).
When drive output
phases U2, V2 and W2
are connected to the
corresponding motor
terminals:
99.13 99.13 Idrun mode
11.07 Autophasing mode
99.05
Start-up 17
forward
direction
reverse
direction