Mitsubishi Electric TM-RF004C20, Руководство пользователя, Страница: 48 / 72

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7 TM-RFM SERIES
7.4 Derating
7.4
Derating
The derating condition is the reference value at the rated speed. As the temperature rise value of the direct drive motor
changes depending on operation conditions such as speed, confirm that [AL. 0E2 Servo motor overheat warning] and [AL.
046 Servo motor overheat] do not occur on the actual machine before use.
If a warning or alarm occurs, consider taking the following measures:
• Lower the effective load ratio of the direct drive motor.
• Review the heat dissipation conditions.
To use this product under conditions with multiple derating, calculate the multiplication of each derating rate, and use at the
calculated derating rate or lower.
For machines where unbalanced torque occurs, such as a vertical axis system, the unbalanced torque should be kept at 70 %
or lower of the rated torque.
When applying the derating rate in the conditions above, calculate the multiplication of the derating rate of 70 % in the
unbalanced torque and the derating rate of each condition, and use this product at the calculated derating rate or lower.
Restrictions on the ambient temperature
When using this product in an environment with a high ambient temperature, derate the product in accordance with the
following conditions:
0
40
20
60
80
100
120
0 20 40 60
TM-RFM002C20
TM-RFM004C20
TM-RFM006C20
0
40
20
60
80
100
120
0 20 40 60
TM-RFM006E20
TM-RFM012E20
TM-RFM018E20
0
40
20
60
80
100
120
0 20 40 60
TM-RFM012G20
TM-RFM048G20
TM-RFM072G20
0
40
20
60
80
100
120
0 20 40 60
TM-RFM040J10
TM-RFM120J10
TM-RFM240J10
Derating rate [%]
Ambient temperature [°C]
Derating rate [%]
Ambient temperature [°C]
Derating rate [%]
Ambient temperature [°C]
Derating rate [%]
Ambient temperature [°C]