Mitsubishi Electric MELSERVO MRJ2S-B, Instruction Manual

Page: 139 / 200

Optional accessories Accessories
MELSERVO J2-Super 7 - 5
●
Power dissipation of servo motor and servo amplifier in regenerative mode
Efficiency regenerative mode (
η
): 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 torque, allow for about 10%.
Capacitor charging (E
C
): Energy charged into the electrolytic capacitor in the servo amplifier.
The energy E
R
consumed by the regenerative brake option is calculated as follows:
Calculate the power consumption of the regenerative brake option on the basis of the energy E
R
and single-cycle operation period tf [s] to select the necessary regenerative brake option.
Servo amplifier
Efficiency [%]
regenerative mode
Capacitor charging [J]
Ser
v
o amplifier 200V
MR-J2S-10B 55 9
MR-J2S-20B 70 9
MR-J2S-40B 85 11
MR-J2S-60B 85 11
MR-J2S-70B 80 18
MR-J2S-100B 80 18
MR-J2S-200B 85 40
MR-J2S-350B 85 40
MR-J2S-500B 90 45
MR-J2S-700B 90 70
Ser
v
o amplifier 400V
MR-J2S-60B4 85 11
MR-J2S-100B4 80 18
MR-J2S-200B4 85 40
MR-J2S-350B4 85 40
MR-J2S-500B4 90 45
MR-J2S-700B4 90 70
Tab. 7-4: Power dissipation of servo motor and servo amplifier
E
R
J
[ ] η
E
S
E
C
–
×
=
P
R
W
[ ]
E
R
tf
------- =