bnp-b2365(eng)b.pdf - 第384页
Appendix 3. EMC Installation Guidelines A3 - 7 Appendix 3-5-4 Servo motor feedback cable Use a conventional batch shield pair cable for feed back cable of the servo motor to earth on NC side (inside the control panel.) C…
Appendix 3. EMC Installation Guidelines
A3 - 6
Appendix 3-5-3 Servo/spindle motor power cable
Control panel
To dri v e unit
Earth with P or U clip
Shield cable
Cannon connector
Servomotor
Contro l panel
To drive unit
Cannon
connector
Servomotor
Earth with paint mask
Conduit connecto
r
Conduit
Cabtyre cable
Using shield cable Using conduit
Power cable for servo motor
Control panel
Control panel
To drive un i t
Earth with P or U clip
Shield cable
Terminal box
Servo motor
To drive un i t
Cabtyre cable
Conduit
Earth with paint m ask
Conduit connector
Terminal box
Using shield cable Using conduit
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.
[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 fo r the conduit connector to earth the power cable on
the motor side. (Example: Use a clamp fitting, etc.)
Cannon connect or
Conduit connector
Conduit
To earthing
Clamp fitt i ng
Solder
Appendix 3. EMC Installation Guidelines
A3 - 7
Appendix 3-5-4 Servo motor feedback cable
Use a conventional batch shield pair cable for feed back cable of the servo motor to earth on NC side
(inside the control panel.)
Control panel
To drive unit
Cannon connect or
Batch shield pair c able
Feed back cable for servomotor
Appendix 3-5-5 Spindle motor feedback cable
Use a conventional batch shield cable for feedback cable of the spindle motor.
To drive unit
Control pan el
Connect with connector case
after shield clamping
Terminal box
Batch pair shield cable
To drive unit
Spindle amp side connector (this figure shows when cover is removed)
(Note) Shield of the spindle motor feedback cable is not FG. Do not earth.
Feed back cable for spindle motor
Appendix 3. EMC Installation Guidelines
A3 - 8
Appendix 3-6 EMC countermeasure parts
Appendix 3-6-1 Shield clamp fitting
The effect can be enhanced by connecting the cable directly to the earthing plate.
Install an earthing plate near each panel's outlet (within 10cm), and press the cable against the earthing
plate with the clamp fitting.
If the cables are thin, several can be bundled and clamped together.
Securely earth the earthing plate with the frame ground. Install directly on the cabinet or connect with an
earthing wire.
Contact Mitsubishi if the earthing plate and clamp fitting set (AERSBAN- SET) is required.
View of clamp section
• Outline drawing
Peel the cable sheath at the clamp section.
Cable
Cable
Earthing plate
Earthing plate
Clamp fitting
(Fitting A, B)
Clamp fitting
2-Ø5 hole
Installation hole
[Unit: mm]
Note 1
M4 screw
Shield sheath
(Note 1) Screw hole for wiring to earthing plate in cabinet.
(Note 2) The earthing plate thickness is 1.6mm.
A B C Enclosed fittings
L
AERSBAN-DSET 100 86 30 Clamp fitting A × 2 Clamp fitting A 70
AERSBAN-ESET 70 56 - Clamp fitting B × 1 Clamp fitting B 45
!
Caution
Shield of spindle detector cable is not connected to FG (earth). Do not earth the cable
shield with cable clamp, etc.