Mitsubishi Electric Melservo MR-J3-100B, Руководство пользователя

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Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
5 - 45
The following graphs show overload protection characteristics.
400 0
1000
50 100
(Note 2)
150 200 250 300 350
1
100
10
Servo-lock
Load ratio [%] (Note 1, 3)
Oper
ation tim
e
[s]
Operating
10000
1000
100
10
1
300 50 100 150 200 250 0
O
peration time [s
]
Servo-lock
Load ratio [%] (Note 1)
Operating
(Note 2)
Characteristics A Characteristics B
Note 1. If operation that generates torque more than 100% of the rating is performed with an abnormally high frequency in a servo
motor stop status (servo-lock status) or in a 50 r/min or less low-speed operation status, the drive unit may malfunction
regardless of the electronic thermal protection.
2. Load ratio 100% indicates the rated output of the drive unit. Refer to "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) instruction
manual".
3. The operation time at the load ratio of 300% to 400% applies when the maximum torque is increased to 400% of rated torque.
For the combination of a servo amplifier and servo motor with which the maximum torque can be increased, refer to “Part 1:
3.3.2 (3) Servo amplifier and servo motor combination for the MR-J4 series”.
Fig. 5.2 Overload protection characteristics.
(3) For the MR-CR_ converter unit
10000
1000
100
10
1
0 100 200 300
Operating
50 150 250
Load ratio [%] (Note)
Operation time [s]
Note. Load ratio 100% indicates the rated output of the resistance regeneration converter
unit. Refer to "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) instruction manual".
Fig. 5.3 Overload protection characteristics