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6-48
6-14 Inertia Ratio Switching Function
OMNUC G5-SERIES 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.
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When servo is ON
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When there is no trouble with the motor's normal rotation
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When realtime autotuning is disabled
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When adaptive filter function is disabled
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When instantaneous speed observer function is disabled
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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).
Precautions for Correct Use
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Be sure that the motor is stopped when using the inertia ratio switching function.
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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.
Parameter number Parameter name Explanation Reference
Pn610 Setting of Each Function Set the bits related to inertia ratio switching. P.8-59
Pn004 Inertia Ratio Set the inertia ratio 1. P.8-2
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)