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4.INSTALLATION
(6) Installation orientation
The servo motor may be installed in any orientation. When the servo motor with electromag-
netic brake is installed with the shaft end at top, the brake plate may generate sliding sound but
it is not a fault. Refer to Section 10-3 for the installation orientation of the servo motor with
reduction gear.
(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. When using the servo motor in an application where the servo motor itself may cause
a movement, design the cable so that the service life of the bent part of the cable comes
within the service life of the bent part of the detector 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 x 10
5 x 10
1 x 10
5 x 10
1 x 10
5 x 10
1 x 10
5 x 10
1 x 10
5 x 10
1 x 10
Note: This graph gives calculated values which are not guaranteed.
8
7
7
6
6
5
5
4
4
3
3
4
7
10
20
40
Flexing radius [mm]
Flexing Lives of Encoder Cables
4– 9
a
a : Long flexing-life encoder cabl
MR–JCCBL M–H
MR–JHSCBL M–H
b : Standard encoder cable
MR–JCCBL M–L
MR–JHSCBL M–L
b
70 100
200
4
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