Inertia Ratio Switching Function - Omron R88M-K Series User Manual

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
Parameter number Parameter name
Function Expansion
Pn610
Setting
Pn004 Inertia Ratio
Pn613 Inertia Ratio 2
Operating Procedure
1. Set the Function Expansion Setting (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).
Function Expansion
Setting (Pn610)
When bit 3 = 0: Inertia ratio
switching is disabled
When bit 3 = 1: Inertia ratio
switching is enabled
Precautions for Correct Use
 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
motor is stopped. Use it upon confirming that there is no problem with vibration on the actual machine.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
6-14 Inertia Ratio Switching Function
Explanation
Set the bits related to inertia ratio switching.
Set the inertia ratio 1.
Set the inertia ratio 2.
Inertia ratio switching
input (JSEL)
OFF
ON
OFF
ON
Applicable inertia ratio
Inertia Ratio 1 (Pn004)
Inertia Ratio 2 (Pn613)
Reference
6
P.8-60
P.8-3
P.8-61
6-49