Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual page 302

15. 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
MR-J2S-10CP(1)-S084
MR-J2S-20CP(1)-S084
MR-J2S-40CP(1)-S084
MR-J2S-60CP-S084
MR-J2S-70CP-S084
MR-J2S-100CP-S084
MR-J2S-200CP-S084
MR-J2S-350CP-S084
MR-J2S-500CP-S084
MR-J2S-700CP-S084
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 brake option.
Calculate the power consumption of the regenerative brake option on the basis of single-cycle operation
period tf [s] to select the necessary regenerative brake option.
(3) Connection of the regenerative brake option
Set parameter No.2 according to the open to be used.
Inverse efficiency[%]
55
70
85
85
80
80
85
85
90
90
: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 ............................................................................................(15.1)
Parameter No.0
Selection of regenerative
0: Not used.
2: MR-RB032
3: MR-RB12
4: MR-RB32
5: MR-RB30
6: MR-RB50
8: MR-RB31
9: MR-RB51
15 - 3
Capacitor charging[J]
9
9
11
11
18
18
40
40
45
70