Inspection And Maintenance; Maintenance Works - Mitsubishi Electric A173UHCPU User Manual

5. INSPECTION AND MAINTENANCE

5. INSPECTION AND MAINTENANCE

5.1 Maintenance Works

Do not open the front casing or terminal cover during operation or when power is connected.
This can cause electric shocks.
Do not operate with the front case or terminal cover open. This can cause electric shocks from
exposed high-voltage terminals or charged parts.
Even if the power is turned off, do not open the front casing or terminal covers, except to connect
wiring or conduct scheduled inspections. Charged components in the controller or servo amplifier
can cause electric shocks.
To avoid electric shocks, turn off the power, wait at least ten minutes, then check the voltage with
a tester before starting wiring or inspections.
Ground controllers, servo amplifiers, and servomotors to class 3 grounding resistance, or less.
Do not share a common ground with other equipment.
All wiring and inspections to be conducted by a trained technician.
Install controllers, servo amplifiers, and servomotors before connecting wiring. Otherwise,
electric shocks or injury can result.
Do not operate switches when your hands are wet. This can cause electric shocks.
Do not scratch, apply undue strain to, place heavy weights on, or trap cables. This can cause
electric shocks.
Do not touch controller, servo-amplifier, or servomotor terminal blocks while power is turned on.
This can cause electric shocks.
Do not touch the controller or servo amplifier internal power supply, internal ground, or signal
wires. This can cause electric shocks.
This chapter describes the methods of troubleshooting and daily maintenance and
inspection for those who will carry out such works.
This section explains the periodic and daily inspections performed to operate the
motion system safely and normally and the actions to be taken for troubles that
may take place during motion system operation.
Maintenance Work
Daily inspection
Periodic inspection
Troubleshooting
Table 5.1 Maintenance Works
Description
Inspection performed daily.
Inspection performed once or twice every six
months or every year
Clearing up of system trouble cause and its
corrective action
WARNING
5 − 1
Refer To
Section 5.2
Section 5.3
Section 5.4