Load To Motor Inertia Ratio Monitor Mode; Precautions On Load To Motor Inertia Ratio Monitor Mode; Adjustment Procedure For Load To Motor Inertia Ratio Monitor Mode; Operation Of Load To Motor Inertia Ratio Monitor Mode - Mitsubishi Electric MR-J5 User Manual

3.8

Load to motor inertia ratio monitor mode

The servo amplifier has a function which estimates the machine characteristic (load to motor inertia ratio) in real time. This
mode does not change the set gains, but estimates the load to motor inertia ratio.

Precautions on load to motor inertia ratio monitor mode

Only estimation of the load to motor inertia ratio is executed by this mode. Therefore, the estimated load to motor inertia ratio
is not used in controlling by the servo amplifier, and the responsiveness decreases in comparison with the same setting in the
manual mode.
Adjustment procedure for load to motor inertia ratio monitor
mode
• When the MR-J5_-_G_ or MR-J5-_A_ with firmware version C4 or later is used, it is recommended to set
[Pr. PA24.5 Load to motor inertia ratio/load to motor mass ratio estimation higher precision selection] to "1".
When [Pr. PA24.5] is set to "0", [Pr. PB06 Load to motor inertia ratio/load to motor mass ratio] may be
estimated at a value smaller than the accurate estimation depending on the operation pattern. Setting [Pr.
PA24.5] to "1" with the equipment on which the gain is adjusted may change the actual movement. Check
the movement of the equipment after changing the settings.
This mode enables manual adjustment by all the gains. However, use the gains adjusted by quick tuning as a standard. Refer
to the adjustment procedure for manual mode when adjusting the gains with this mode.
Page 56 Adjustment procedure

Operation of load to motor inertia ratio monitor mode

The operation of the load to motor inertia ratio estimation performed in this mode is the same as that of auto tuning mode 1.
The servo parameter that is automatically adjusted in this mode is shown in the table below.
Servo parameter
PB06
3 ADJUSTMENT METHOD
58
3.8 Load to motor inertia ratio monitor mode
Symbol Name
GD2 Load to motor inertia ratio/load to motor mass ratio