Chapter 6  Control Modes of Operation  ASDA-B2 
6-22     Revision May, 2018 
Many kinds of gain in speed control unit are adjustable. Two ways, manual and auto, are 
provided for selection.  
Manual: All parameters are set by users and the auto or auxiliary function will be disabled 
in this mode. 
Auto: General load inertia estimation is provided. It adjusts the parameter automatically.  
Its framework is divided into PI auto gain adjustment and PDFF auto gain 
adjustment. 
Parameter P2-32 can be used to adjust the gain. 
P2-32▲ 
  AUT2  Tuning Mode Selection 
Address: 0240H 
0241H 
 
Operation 
Interface: 
Panel/Software   Communication  
Related Section:  
Section 5.6, 
Section 6.3.6 
 
 
Default: 0 
 
Control 
Mode: 
ALL 
 
Unit: N/A 
 
Range: 0 ~ 2 
 
Data Size: 16-bit 
 
Display 
Format: 
Hexadecimal 
Settings: 0: Manual Mode 
1: Auto Mode (continuous adjustment) 
2: Semi-auto Mode (non- continuous adjustment) 
Relevant description of manual mode setting: 
When P2-32 is set to 0, parameters related to gain control, such 
as P2-00, P2-02, P2-04, P2-06, P2-07, P2-25, and P2-26, all can 
be set by the user. 
When switching mode from auto or semi-auto to manual, 
parameters about gain will be updated automatically. 
 
Relevant description of auto mode setting: 
Continue to estimate the system inertia, save the inertia ratio to 
P1-37 every 30 minutes automatically and refer to the stiffness 
and bandwidth setting of P2-31. 
1.  Set the system to manual mode 0 from auto 1 or semi-auto 2, 
the system will save the estimated inertia value to P1-37 
automatically and set the corresponding parameters. 
2.  Set the system to auto mode 1 or semi-auto mode 2 from 
manual mode 0, please set P1-37 to the appropriate value. 
3.  Set the system to manual mode 0 from auto mode 1, P2-00, 
P2-04, and P2-06 will be modified to the corresponding