Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 487

[Appendix 1] Summary of MR-J4_B_-RJ020 + MR-J4-T20
No. Symbol
35 TTT Load to motor inertia ratio (load inertia ratio)
Set the percentage of the load to the motor inertia ratio to the servo motor inertia moment
(load inertia ratio).
This setting can be enabled or disabled with [Pr. 59] (OPB).
Setting [Pr. 59] (OPB) to "_ _ _1" enables this setting.
When [Pr. 35] is "0 [%]", the parameter for the load to motor inertia ratio is not enabled
regardless of the setting of [Pr. 59].
59 *OPB Option function B:
Select a setting of the load to motor inertia ratio (load inertia ratio).
3) Manual setting
If a problem occurs with the above 1) or 2), disable the load to motor inertia ratio function and manually
adjust the gain value. For how to manually adjust the gain value, refer to section 6.3 "Manual mode 1" of
"Conversion Unit for SSCNET of MR-J2S-B Compatible AC Servo MR-J4-_B_-RJ020/MR-J4-DU_B_-
RJ020/MR-CR55K_/MR-J4-T20 SERVO AMPLIFIER INSTRUCTION MANUAL".
(8) Adaptive vibration suppression control function
Adaptive vibration suppression control is a function in which the servo amplifier detects mechanical
resonance and sets filter characteristics automatically to suppress mechanical vibration.
Adaptive filter II (adaptive tuning) which is equivalent to that of MR-J4-_B_ is available for MR-J4-_B_-
RJ020 as the adaptive vibration suppression control function.
Name and function
Ratio selection for the load to motor inertia ratio (load inertia ratio)
0: Disabled The ratio setting of [Pr. 35] (TTT) is disabled.
1: Enabled The ratio setting of [Pr. 35] (TTT) is enabled.
* Before enabling this function, check the setting value of [Pr. 35].
If a proper value has not been set in [Pr. 35], the motor may operate
unexpectedly.
POINT
The adaptive vibration suppression control function is supported by servo amplifier
with software version A9 or later. (Enabling the adaptive vibration suppression
control of [Pr. 25] of a servo amplifiers with software version A8 or earlier will
cause [AL. 37 Parameter error].)
For the items not described in this Replacement Manual, refer to "MELSERVO-J4
series MR-J4-_B_-RJ020 Servo Amplifier Instruction Manual".
The characteristics of the adaptive vibration suppression control differ from those
for MR-J2S-_B_.
When this function is used, [Pr. 61] "Machine resonance suppression filter 2"
cannot be used.
Appendix 1-24
Initial
Setting
value
range
[Unit]
0 0 to
65535
[%]
0000 0000h
to
1111h