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4. INSTALLATION
(7) Cable stress
1) The way of clamping the cable must be fully examined so that flexing stress and cable's own weight
stress are not applied to the cable connection.
2) In any application where the servo motor moves, the cables should be free from excessive stress.
For use in any application where the servo motor itself will move, run the cables so that their
flexing portions fall within the flexing life range of the encoder cable. Fix the encoder cable and
power cable of the servo motor.
3) Avoid any probability that the cable sheath might be cut by sharp chips, rubbed by a machine
corner or stamped by workers or vehicles.
4) The flexing lives of the cables are shown below. In actuality, provide a little allowance for these
values. For installation on a machine where the servo motor will move, the flexing radius should be
made as large as possible.
1
5
1
5
1
5
1
5
1
5
1
Note: This graph gives calculated values which are not guaranteed.
10
8
10
7
10
7
10
6
10
6
10
5
10
5
10
4
10
4
10
3
10
3
4
7
10
20
Flexing radius [mm]
Flexing Lives of Encoder Cables
a
a : Long flexing-life encoder cable
b : Standard encoder cable
b
40
70 100
200
4 - 9
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