Mitsubishi Electric MR-J4, Instruction Manual

Page: 739 / 794

APPENDIX
App. - 14
App. 4.6 Maintenance and service
WARNING
To avoid an electric shock, only qualified personnel should attempt inspections.
For repair and parts replacement, contact your local sales office.
App. 4.6.1 Inspection items
It is recommended that the following points periodically be checked.
(1) Check for loose terminal block screws. Retighten any loose screws.(Except for MR-J4-03A6 and MR-
J4W2-0303B6)
Servo amplifier
Tightening torque [N•m]
L1 L2 L3 N- P3 P4 P+ C D L11 L21 U V W PE
MR-J4-10_(1)/MR-J4-20_(1)/
MR-J4-40_(1)/ MR-J4-60_(4)/
MR-J4-70_/MR-J4-100_(4)/
MR-J4-200_(4)/MR-J4-350_(4)
1.2
MR-J4-500_ 1.2 0.8 1.2
MR-J4-700_(4)/MR-J4-500_4 1.2 0.8 1.2
MR-J4-11K_(4)/MR-J4-15K_(4) 3.0 1.2 3.0
MR-J4-22K_(4) 6.0 1.2 6.0
MR-J4W_-_B 1.2
(2) Servo motor bearings, brake section, etc. for unusual noise.
(3) Check the cables and the like for scratches or cracks. Perform periodic inspection according to
operating conditions.
(4) Check that the connectors are securely connected to the servo motor.
(5) Check that the wires are not coming out from the connector.
(6) Check for dust accumulation on the servo amplifier.
(7) Check for unusual noise generated from the servo amplifier.
(8) Check the servo motor shaft and coupling for connection.