11. OPTIONS AND AUXILIARY EQUIPMENT
11 - 10
(2) 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
energy Ec [J]
MR-J4W2-22B 75 17
MR-J4W2-44B 85 21
MR-J4W2-77B 85 44
MR-J4W2-1010B 85
44
MR-J4W3-222B 75
21
MR-J4W3-444B 85
31
Inverse efficiency (
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 generated torque, allow for about 10%.
Capacitor charging energy (Ec): Energy charged into the electrolytic capacitor in the servo amplifier
(3) Calculation of regenerative energy per cycle
For example, calculate the regenerative energy in the following operation pattern with 3-axis servo
amplifier.
2)
1)
A-axis
B-axis
C-axis
3)
4)
6)
5)
7)
8)
9)
10)
11)
Time
Time
Time
Servo motor speed
Linear servo motor feed speed
tf (1 cycle)
Summary of Contents for MR-J4W2
Page 9: ...A 8 MEMO ...
Page 17: ...8 MEMO ...
Page 31: ...1 FUNCTIONS AND CONFIGURATION 1 14 MEMO ...
Page 95: ...4 STARTUP 4 20 MEMO ...
Page 169: ...6 NORMAL GAIN ADJUSTMENT 6 20 MEMO ...
Page 201: ...7 SPECIAL ADJUSTMENT FUNCTIONS 7 32 MEMO ...
Page 213: ...8 TROUBLESHOOTING 8 12 MEMO ...
Page 219: ...9 OUTLINE DRAWINGS 9 6 MEMO ...
Page 229: ...10 CHARACTERISTICS 10 10 MEMO ...
Page 295: ...13 USING STO FUNCTION 13 14 MEMO ...
Page 327: ...14 USING A LINEAR SERVO MOTOR 14 32 MEMO ...
Page 371: ...16 FULLY CLOSED LOOP SYSTEM 16 24 MEMO ...
Page 521: ...APPENDIX App 38 ...
Page 537: ...MEMO ...
Page 541: ......