5.2.10 Servomotor Heat Dissipation Conditions - YASKAWA E Series Product Manual

5.2 Specifications and Ratings

5.2.10 Servomotor Heat Dissipation Conditions

5.2.10 Servomotor Heat Dissipation Conditions
The Servomotor ratings are the continuous allowable values at a surrounding air temperature of
40°C when a heat sink is installed on the Servomotor. If the Servomotor is mounted on a small
device component, the Servomotor temperature may rise considerably because the surface for
heat dissipation becomes smaller. Refer to the following graphs for the relation between the
heat sink size and derating rate.
When using Servomotors with derating
tion timing in advance based on the overload detection level of the motor. Refer to the following
section for the overload detection level of the motor.
5.2.7 Servomotor Overload Protection Characteristics on page 5-11
Note: The derating rates are applicable only when the average motor speed is less than or equal to the rated motor
speed. If the average motor speed exceeds the rated motor speed, consult with your Yaskawa representa-
tive.
Important
5-14
The actual temperature rise depends on how the heat sink (i.e., the Servomotor mounting sec-
tion) is attached to the installation surface, what material is used for the Servomotor mounting
section, and the motor speed. Always check the Servomotor temperature with the actual equip-
ment.
120
SGM7A-A5 and -01
100
80
SGM7A-C2
60
40
20
0 50 100 150 200 250 300
Heat sink size (mm)
120
SGM7A-15, -20, and -25
100
80
60
40
20
0 50 100 150 200 250 300 350
Heat sink size (mm)
, change the overload warning and overload alarm detec-
120
SGM7A-02 and -04
100
80
60
SGM7A-06
40
20
0 50 100 150 200 250 300
Heat sink size (mm)
120
100
SGM7A-70
80
60
SGM7A-30
SGM7A-40 and -50
40
20
0
0 100 200 300 400 500
Heat sink size (mm)
120
SGM7A-08
100
80
SGM7A-10
60
40
20
0
50 100 150 200 250 300 350
Heat sink size (mm)