Servomotor Temperature Increase - YASKAWA Sigma-7 Series Product Manual

7.3 Servomotor Temperature Increase

7.3 Servomotor Temperature Increase
This section describes measures to suppress temperature increases in the Servomotor.
• When you install the Servomotor, observe the cooling conditions (heat sink sizes) that are
given in the specifications for each type of Servomotor.
The Servomotor generates heat when it operates. The heat generated by the Servomotor
radiates to the heat sink through the motor mounting surface. Therefore, if the surface area of
the heat sink is too small, the temperature of the Servomotor may increase abnormally.
• If the operating environment makes it difficult to use a large heat sink, or if the ambient oper-
ating temperature or altitude given in the specifications is exceeded, implement the following
measures.
• Derate the Servomotor.
• Use external forced-air cooling for the Servomotor with a cooling fan or other means.
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Contact your Yaskawa representative for information on derating.
Do not place packing or any other insulating material between the Servomotor and heat
sink. Doing so will cause the motor temperature to increase, affect resistance to noise, and
may cause motor failure.
Important