Inspection Items; Daily Inspection Items; Periodic Inspections - Mitsubishi Electric MELFA Hardware Manual

5Maintenance and Inspection

5.2 Inspection items

The controller inspection items are shown below.
Refer to section "Maintenance and Inspection" in the separate manual "Robot arm setup and maintenance", and
inspect the robot arm at the same time.

5.2.1 Daily inspection items

Carry out daily inspections following the procedures given in
Table 5-1 ： Daily inspection items (details)
Procedure Inspection items (details)
Before turning the power ON (Check the following inspection items before turning the power ON.)
1 Is the power cable securely connected?
2 Are the machine cables between the robot arm and controller securely
connected?
3 Is the controller cover cracked, has any foreign matter adhered, or is
there any interference?
4 Is the controller filter dirty?
After turning the power ON (Turn the power ON while monitoring the robot.)
1 Is there any abnormal movement or noise when the power was turned
ON?
During operation (Try moving with an original program.)
1 Check that the operation point is not deviated. If deviated, check the
following items.
1) Are any of the installation bolts loose?
2) Are the bolts at the hand installation section loose?
3) Is the position of the jigs, other than the robot, deviated?
4) If the positional deviation cannot be eliminated, refer to
"Troubleshooting", and remedy.
2 Is there any abnormal movement or noise?

5.2.2 Periodic inspections

Carry out periodic inspections following the procedures given in
Table 5-2 ： Periodic inspection items (details)
Procedure Inspection items (details)
Monthly inspection items
1 Are any of the connector fixing screws or terminal block terminal
screws loose?
Yearly inspection items
1 Replace the backup battery in the controller.
5-44 Inspection items
Table 5-1.
Remedies
Securely connect.
(Visual)
Securely connect.
(Visual)
Replace with a new part, or take remedial measures.
Clean or replace with a new part.
Refer to the Troubleshooting section and remedy.
Refer to the Troubleshooting section and remedy.
Refer to the Troubleshooting section and remedy.
(Visual)
Table 5-2.
Remedies
Securely tighten the screws.