6-50
6-14 Inertia Ratio Switching Function
Accurax G5 AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
  6
Applied Functions
6-14 Inertia Ratio Switching Function
Outline of Operation
You can switch the inertia ratio from 1 or 2 using inertia ratio switching input (JSEL). This
functions effectively if used when the load inertia changes in 2 levels.
You can use inertia ratio switching in the following situations.
 When servo is ON
 When there is no trouble with the motor's normal rotation
 When realtime autotuning is disabled
 When adaptive filter function is disabled
 When instantaneous speed observer function is disabled
 When disturbance observer function is disabled
Parameters Requiring Settings
Operating Procedure
1.  Set the Setting of Each Function (Pn610).
Set whether to enable or disable inertia ratio switching in bit 3.
0: Disabled
1: Enabled
2.  Set the Inertia Ratio 1 (Pn004).
3.  Set the Inertia Ratio 2 (Pn613).
4.  Set the inertia ratio switching input (JSEL).
 Be sure that the motor is stopped when using the inertia ratio switching function.
If the difference between inertia ratio 1 and inertia ratio 2 is large, a vibration may occur even if the
Parameter number
Parameter name Explanation Reference
Pn610
Enable of several 
function
Set the bits related to inertia ratio switching. P.8-59
Pn004 Inertia Ratio Set the inertia ratio 1. P.8-3
Pn613 Inertia Ratio 2 Set the inertia ratio 2. P.8-60
Setting of Each Function 
(Pn610)
Inertia ratio switching 
input (JSEL)
Applicable inertia ratio
When bit 3 = 0: Inertia ratio 
switching is disabled
OFF
Inertia Ratio 1 (Pn004)ON
When bit 3 = 1: Inertia ratio 
switching is enabled
OFF
ON Inertia Ratio 2 (Pn613)