Yaskawa SGDH Linear Sigma Series - Manual (Page 110)

4 SERVOPACK Specifications and Dimensional Drawings
4-12
4.5 SERVOPACK Overload Characteristics and Allowable Load Mass
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 1 conditions at a servomotor ambient temperature of 40 °C
(104 °F).
1 Hot Start
A hot start indicates that both the SERVOPACK and the servomotor have run long enough at the rated load to be thermally
saturated.
TERMS
10,000
1,000
100
10
5
1
Operating time (s)
Rated force Approx.
Rated force + Maximum force
2
Maximum force
Motor force