Servopack Overload Characteristics And Allowable Load Moment Of Inertia; Overload Characteristics - YASKAWA E-II Series User Manual

4 SERVOPACK Specifications and Dimensional Drawings

4.5.1 Overload Characteristics

4.5 SERVOPACK Overload Characteristics and Allowable Load
Moment of Inertia
4.5.1 Overload Characteristics
SERVOPACKs have a built-in overload protective function that protects the SERVOPACKs and servomotors
from overload. Allowable power for the SERVOPACKs is limited by the overload protective function as shown
in the figure below.
The overload detection level is set under hot start
40°C.
Operating time (s)
1
Hot Start
TERMS
A hot start indicates that both the SERVOPACK and the servomotor have run long enough at the rated load to be thermally
saturated.
4-12
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10000 10000 10000 10000
1000 1000 1000 1000
100 100 100 100
10 10
5 5 5 5
1 1 1 1
Rated current
Approx.
Rated current
1
conditions at a servomotor surrounding air temperature of
+
Maximum current
2
Motor current
Maximum current