8. CHARACTERISTICS
8 - 2
1000
100
10
1
0.1
Operating
Servo lock
0 50 150 200 250 300100
(Note) Load ratio [ ]
Operation time [s]
MR-J3-20B-RJ080W to MR-J3-100B-RJ080W
1000
100
10
1
0.1
0 50 150 200 250 300
100
Operating
Servo lock
(Note) Load ratio [ ]
Operation time [s]
MR-J3-350B-RJ080W
10000
1000
100
10
1
Operating
Servo lock
0 50 150 200 250 300100
(Note) Load ratio [ ]
Operation time [s]
MR-J3-500B-RJ080W
Note. If operation that generates torque more than 100% of the rating is performed with an abnormally high frequency in a direct drive motor
stop status (servo lock status) or in a 30r/min or less low-speed operation status, the servo amplifier may fail even when the electronic
thermal relay protection is not activated.
Fig 8.1 Electronic thermal relay protection characteristics