Stober PK - Derating

11.7.3 Derating
If you use the motor under ambient conditions that differ from the standard ambient conditions, the nomi-
nal torque M
N
of the motor is reduced. In this chapter, you can find information for calculating the reduced
nominal torque.
Fig.5: Derating depending on the surrounding temperature
Fig.6: Derating depending on the installation height
Calculation
If surrounding temperature ϑ
amb
> 40°C:
M
Nred
= M
N
⋅ K
ϑ
If installation altitude H > 1000 m above sea level:
M
Nred
= M
N
⋅ K
H
If the surrounding temperature ϑ
amb
> 40°C and installation altitude H > 1000m above sea level:
M
Nred
= M
N
⋅ K
H
⋅ K
ϑ
11.7 Project configuration 11 EZsynchronous servo motors
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