Mitsubishi Electric MELSERVO-J3 Series Manual page 406

14. OPTIONS AND AUXILIARY EQUIPMENT
(b) Losses of servo motor and servo amplifier in regenerative mode
The following table lists the efficiencies and other data of the servo motor and servo amplifier in the
regenerative mode.
Servo amplifier Inverse efficiency[%] Capacitor charging[J]
MR-J3-10T
MR-J3-10T1
MR-J3-20T
MR-J3-20T1
MR-J3-40T
MR-J3-40T1
MR-J3-60T(4)
MR-J3-70T
MR-J3-100T
MR-J3-100T4
Inverse efficiency ( )
Capacitor charging (Ec)
Subtract the capacitor charging from the result of multiplying the sum total of regenerative energies by the
inverse efficiency to calculate the energy consumed by the regenerative option.
Calculate the power consumption of the regenerative option on the basis of single-cycle operation period tf [s]
to select the necessary regenerative option.
55 9
55 4
70 9
70 4
85 11
85 10
85 11
80 18
80 18
80 12
:Efficiency including some efficiencies of the servo motor and servo amplifier
when rated (regenerative) torque is generated at rated speed. Since the
efficiency varies with the speed and generated torque, allow for about 10%.
:Energy charged into the electrolytic capacitor in the servo amplifier.
ER [J] Es Ec
PR [W] ER/tf
14 - 21
Servo amplifier Inverse efficiency[%] Capacitor charging[J]
MR-J3-200T
MR-J3-200T4
MR-J3-350T
MR-J3-350T4
MR-J3-500T(4)
MR-J3-700T(4)
MR-J3-11KT(4)
MR-J3-15KT(4)
MR-J3-22KT(4)
85 40
85 25
85 40
85 36
90 45
90 70
90 120
90 170
90 250