YASKAWA E-S Series Product Manual

Contents

3.4 Servomotor Temperature Increase3-73 Installation3.4 Servomotor Temperature IncreaseThis section describes measures to suppress temperature increases in the Servomotor.• When you install the Servomotor, observe the cooling conditions (heat sink sizes) that aregiven in the specifications for each type of Servomotor.The Servomotor generates heat when it operates. The heat generated by the Servomotorradiates to the heat sink through the motor mounting surface. Therefore, if the surface area ofthe 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 surrounding airtemperature given in the specifications is exceeded, implement the following measures.• Derate the Servomotor.Refer to the Servomotor specifications for information on derating.Consider derating when you select the capacity of the Servomotor.• Use external forced-air cooling for the Servomotor with a cooling fan or other means.Note: Refer to the following section for the relationship between the heat sink size and derating.2.2.5 Servomotor Heat Dissipation Conditions on page 2-6Do not place packing or any other insulating material between the Servomotor and heatsink. Doing so will cause the motor temperature to increase, affect resistance to noise, andmay cause motor failure.Important