Servopack Overload Characteristics And Allowable Load Moment Of Inertia; Overload Characteristics - YASKAWA SGM H 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
(104°F).
10000
Operating time (s)
Rated torque
Note: The overload protection characteristics of A and B in the figure are applicable when the SERVOPACK is
combined with one of the following servomotors.
A: SGMAH or SGMPH servomotor with a capacity of maximum 400 W.
B: SGMAH or SGMPH servomotors with a capacity more than 400 W and SGMGH, SGMSH, and
SGMDH servomotors.
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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1000
100
A
10
5
1
Rated torque
Approx.
Motor torque
1
conditions at a servomotor ambient temperature of 40°C
B
+
Maximum torque
Maximum torque
2