4.2 Specifications and Ratings
4.2.10 Applications Where the Altitude of the Servomotor Exceeds 1,000 m
4-12
4.2.10
Applications Where the Altitude of the Servomotor
Exceeds 1,000 m
The Servomotor ratings are the continuous allowable values at an altitude of 1,000 m or less. If you
use a Servomotor at an altitude that exceeds 1,000 m (2,000 m max.), the heat dissipation effect of
the air is reduced. Apply the appropriate derating rate from the following graphs.
When using Servomotors with derating, change the overload warning and overload alarm detection
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.
4.2.5 Servomotor Overload Protection Characteristics
Note: 1. Use the combination of the SERVOPACK and Servomotor so that the derating conditions are satisfied for
both the SERVOPACK and Servomotor.
2. 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 rep-
resentative.
100
80
120
120
60
40
0
100
80
60
40
0
20
20
0
500
1000 1500
2000
2500
0
500
1000 1500
2000
2500
SGM7J-A5, -01, and -C2
SGM7J-02, -04, and -06
SGM7J-08
Derating rate (%)
Altitude (m)
Altitude (m)
Derating rate (%)
