Mitsubishi Electric MELSERVO MRJ2S-B, Instruction Manual

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General environmental conditions Installation
MELSERVO J2-Super 2 - 9
In general the installation of the servo motor can be in any desired location or position. When the
servo motor with electromagnetic brake is installed with the shaft end at top, the brake plate may
generate sliding sound but it is not a fault.
Laying the cables
The way of clamping the cable must be fully examined so that flexing stress and the cable's own
weight stress are not applied to the cable connection.
In situations where the servo motor moves, the cable must not be under tension. If the cables
are laid in a cable duct, there must be a sufficient amount of play in the cable lengths of the motor
and encoder cables.
The flexing service life of encoder cables is presented in fig. 2-12. The useful service life of the
encoder cable MR-JCCBLmM-L will be at an end after flexing 5000 times with a flexing radius
of 60 mm. In practice you should plan to have a certain safety margin. For installation on a
machine where the servo motor will move, the flexing radius should be made as large as
possible.
S000528C
Fig. 2-11: Installation of the motor with the shaft at the top
S000529C
Fig. 2-12: Number of flexings depending on the flexing radius
Gear
Lubricating oil
Servo motor
1 × 10
8
5 × 10
7
1 × 10
7
1 × 10
6
5 × 10
6
1 × 10
5
5 × 10
5
5 × 10
3
1 × 10
3
4 7 10 20 40 70 100 200
1 × 10
4
5 × 10
4
High-flexible
encoder cable
MR-JCCBL M-H
MR-JHSCBL M-H
MR-ENCBL M-H
Standard encoder cable
MR-JCCBL M-L
MR-JHSCBL M-L
Number of fle
x
ings
Flexing radius [mm]