AM882 manual says this, have you tried using ProTuner ?

Standstill current setting
SW4 is used for this purpose. OFF meaning that the standstill current is software configured, and ON
meaning that standstill current is set to be the same as the selected dynamic current.
By default, the current automatically reduced to 60% of the selected dynamic current two second
after the last pulse. Theoretically, this will reduce motor heating to 36% (due to P=I2*R) of the
original value. Reduction rate and idle time can be configured in the PC software ProTuner. See
more information in section 13

8. Select configuration for different motor
There is a rotation switch to select the built-in configuration parameters for
different motor. User can select the corresponding parameter according the motor
part number. When it is 0, user can tune the parameters in the configuration
software or just activate the auto-configuration by SW4.