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15. USING A DIRECT DRIVE MOTOR
1000
100
Servo-lock
10
1
0.1
0
50
100
(Note) Load ratio [%]
TM-RFM002C20, TM-RFM004C20,
TM-RFM006C20, TM-RFM006E20,
TM-RFM012E20, TM-RFM018E20,
TM-RFM012G20, TM-RFM040J10
10000
1000
Servo-lock
100
10
1
0
50
100
(Note) Load ratio [%]
TM-RFM240J10
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 30 r/min or less low-speed operation status, the servo amplifier may malfunction
regardless of the electronic thermal relay protection.
Operating
150
200
250
Operating
150
200
250
Fig. 15.2 Electronic thermal relay protection characteristics
1000
100
10
1
0.1
300
0
50
TM-RFM048G20, TM-RFM072G20,
300
15 - 17
Servo-lock
100
150
200
(Note) Load ratio [%]
TM-RFM120J10
Operating
250
300
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