App. 10 Fabrication Of The Encoder Cable - Mitsubishi Electric MELSERVO HG-MR Instruction Manual

APPENDIX

App. 10 Fabrication of the encoder cable

When you fabricate an encoder cable, the descriptions in this appendix should be noted to ensure reliability
of communication.
Cable fabrication
(1) Selection of connectors
Connector selection
(2) Selection of cables
Cable selection
(3) Assembly of the cable
Cable assembly
(4) Inspection
Inspection
Completion
POINT
It is recommended to use options indicated in section 5.1 for the encoder cable.
When fabricating an encoder cable, use recommended products in chapter 3 to
chapter 5.
Check the cable clamp size to select a connector indicated in chapter 3 and chapter
4.
Obtain the specification and wiring guide of the connector from the manufacturer.
Purchase an assembly jig or others as necessary.
Select a recommended wire or equivalent one indicated in chapter 5.
Select a shielded twisted pair cable.
Select a cable having a diameter suitable to clamp to the connector cable clamp.
Select a cable whose length, diameter, and bending life are appropriate.
Check the wiring guide of the connector manufacturer to connect the connector
properly.
Check internal wiring described in chapter 5 to connect it properly.
Perform a shielding process on the encoder cable properly.
Do not connect anything to unused pins.
For CN2, CN2A, CN2B, and CN2C side connectors, connect the external conductor
of the shielded cable to the ground plate and fix it to the connector shell.
For the servo motor-side connector, connect the external conductor of the shielded
cable to the SHD terminal.
Check if the pin arrangement is correct.
Connect the twisted pair cable in correct combination.
Check if the number of pairs of P5/LG wirings connected in parallel is correct.
Fix the cable to the connector with a proper clamping torque.
After assembly, perform conduction, insulation, and other inspections to check if the
connection is correct.
Check the surface for scratches and contamination.
Check the connector pins for a distortion, bending, dent, etc.
Check the connector pins for foreign matter adhesion, contamination, and
discoloration.
App. - 38