Mitsubishi Electric MDS-E, Instruction Manual

Page: 533 / 554

MDS-E/EH Series Instruction Manual
14 Appx. 5: EMC Installation Guidelines
502 IB-1501229-F
14.5.3 Servo/Spindle Motor Power Cable
Power cable for servo motor
Power cable for spindle motor
[1] Use four wires (3-phase + earthing) for the power cable that are completely shielded and free from breaks.
[2] Earth the shield on both the control panel side and motor chassis side. The shield earth position on the drive unit
side must be 10cm or less from the control panel.
[3] Earth the shield with a metal P clip or U clip.
(A cable clamp fitting can be used depending on the wire size.)
[4] Directly earth the shield. Do not solder the braided shield onto a wire and earth the end of the wire.
[5] When not using a shield cable for the power cable, use a conventional cabtyre cable. Use a metal conduit outside
the cable.
[6] Earth the power cable on the control panel side at the contact surface of the conduit connector and control panel.
(Mask the side wall of the control panel with paint.)
[7] Follow the treatment shown in the example for the conduit connector to earth the power cable on the motor side.
(Example: Use a clamp fitting, etc.)
To drive unit
Earth with P or U clip
Cannon
connector
Shield cable
Servo motor
Control panel
Earth with paint mask
Conduit connector
Servo motor
Cabtyre cable
Conduit
Using shield cable
Using conduit
Control panel
To drive unit
Cannon
connector
10cm or less
As close
as possible
Control panel
Terminal box
Spindle motor
Earth with paint mask
Conduit connector
Control panel
To drive unit To drive unit
Using shield cable
Shield cable
Earth with P or U clip
Using conduit
Cabtyre cable
Spindle motor
Conduit
Terminal box
10cm or less
As close
as possible
Solder
Earth example with P clip Earth example with U clip Earth example with wire soldering
Earth (Wire it as short and thick as possible.)
Conduit connector
Connector
Clamp fitting
Conduit