Yaskawa MP940 Reference Manual - Manual (Page 355)

Servo Amplifier Maintenance/Inspection MotionSuite™ MP940 Machine Controller Reference Manual
10-2
Servo Amplifier Inspection
The inspection of the servo amplifier is outlined in the table below. Although
daily inspection is not necessary, carry out an inspection at least once a year.
Part Replacement Schedule
The following parts are subject to wear and mechnical deterioration over
time. To avoid failure, replace these parts at the frequency indicated.
If the servo amplifier has already been overhauled at Yaskawa, its user
parameters are set back to the standard setting at shipment. Always check the
user parameters before operating the motor.
Periodic parts inspection guidelines appear below.
Operating Conditions
• Ambient Temperature: annual average 30ºC
• Load Factor: 80% maximum
• Operation Rate: 20 hours/day maximum
Inspection Items Frequency Procedure Remedy
Clean unit interior and
circuit boards Yearly Check for dust, dirt, and oil
on the surfaces. Clean with compressed air.
Loose screws Yearly Check for loose terminal
block and connector screws. Tighten any loose screws.
Defective parts in unit
or on circuit boards Yearly Check for damage, discolor-
ation, or discontinuities due
to heating Contact your Yaskawa rep-
resentative.
Part
Standard
Replacement
Period
Replacement Method
Cooling fan 4 to 5 years Replace with new part.
Smoothing Capacitor 7 to 8 years Test. Replace with new part if necessary.
Relays — Test. Replace if necessary.
Fuse 10 years Replace with new part.
Aluminium Electrolytic Capacitor
on Circuit Board 5 years Test. Replace with new circuit board if necessary.