Fuji Electric ALPHA7, User Manual

Page: 471 / 662

CHAPTER 9 CHARACTERISTICS
9-12
Bending Strength of Cable
9
9.5 Bending Strength of Cable
If using an option cable (for motor power wiring/encoder wiring/brake wiring) provided by Fuji at
recommended bend radius R=60 [mm] or higher, the bend life will be 5 millions times or greater under
the following test conditions.
<Testing conditions>
(1) Use testing apparatus shown in the figure below to cause the cable to be bent in a traveling
distance L = 300 [mm].
(2) Count each reciprocal test cycle. Count the bending frequency until conductors are broken.
The cable life depends largely on the handling method. The bending life is a
reference value for the testing conditions specified above.
Bending
radius
R=60 [mm]
Fixed end
Moving end
Traveling distance L=300 [mm]