Keeping Out Foreign Materials; Cable Stress - Mitsubishi Electric MELSERVO MR-J5 Series User Manual

2.2

Keeping out foreign materials

When drilling the cabinet for assembly, prevent drill chips and wire fragments from entering the servo amplifier.
Prevent foreign matter such as oil, water, and metallic dust from entering the servo amplifier through cooling fans installed in
openings in the cabinet or on the ceiling.
When installing the cabinet in a place where toxic gas, dirt, and dust exist, conduct an air purge (force clean air into the
cabinet from outside to make the internal pressure higher than the external pressure) to prevent such materials from entering
the cabinet.
When not using the CN7 connector in the MR-J5-500G4-HS_ and MR-J5-700G4-HS_, cover them with the supplied cap.
2.3

Cable stress

• The method used to clamp the cable must be fully examined so that bending stress and cable's own weight stress are not
applied to the cable connection.
• When used for applications where the servo motor moves, fix the cable (encoder, power supply, brake) with gentle slack
from the connecting part of the connector to prevent stress from being applied to the connecting part of the servo motor
connector. Use the optional motor cable/encoder cable within the flex life range.
• Prevent the cable insulator from being cut by sharp chips or from touching and rubbing against the machine corners.
• Prevent the cables from getting stepped on by workers or run over by vehicles.
• If installing the servo motor that moves on a machine, make the bend radius as large as possible. Refer to the following for
the flex life.
Page 251 Cable flex life
Precautions
• The cables should not be damaged, stressed, loaded, or pinched.
2 INSTALLATION
36
2.2 Keeping out foreign materials