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9.3 Inspection of the AC servo motor
Employing a brushless motor makes daily inspection of the AC servo motor easy. Use Table 9.3a
for reference. Determine the appropriate inspection frequency in terms of the operational
status/operating environment.
Table 9.3a Inspection of the AC Servo Motor
9.4 Guideline for replacing the AC servo motor components
See Table 9.4a for component replacement intervals. The replacement period may vary depending
on the condition of use or the operating environment. Replacement is required every time any
failure is found. Contact the place of purchase or our customer support to request for component
replacement. The requirement of component replacement will be determined after inspection.
Table 9.4a Component Replacement Intervals for the AC Servo Motor
9.5 Inspection of the AMSE controller
No daily inspection is required. Inspect the controller at least once a year.
Table 9.5a Inspection of the AMSE Controller
9.6 Guideline for replacing the components of the AMSE controller
The electric or electronic components of the AMSE controller are subject to mechanical wear and
aging. Periodically inspect them as part of preventive maintenance. Also, contact the place of
purchase or our customer support according to Table 9.6a Component Replacement Intervals for the
AMSE Controller. The requirement of component replacement will be determined after inspection.
For the AMSE controller returned to/overhauled by us, parameter settings are reset to default values
before shipment. Be sure to use the controller after setting the parameters appropriately.
Table 9.6a Component Replacement Intervals for the AMSE Controller
Inspection Place/Item
Frequency
Inspection Method and Measure
(1) Vibration and
Acoustic Check
Once a day
Comparing to normal conditions, check that
there is no increase in vibration and noise by
touch and by listening.
(2) External Inspection
Depending on
damage
Clean with cloth or air, if required.
(3) Overall Check
Once every 20000
hours or every 5 years
Contact the place of purchase or our
customer support
Inspection Place/Item
Interval
Inspection Method and Measure
(1) External Inspection
Check that there is no dust, dirt, or oil contamination.
If required, perform cleaning with cloth or air.
(2) Check for Loose
Screws
Once a year (at
least)
Check for loose mounting screws for the terminal block
or connectors. If required, retighten them.
Component
Replacement Interval
Remarks
(1) Bearing
20 thousand hours
(2) Cooling Fan
20 thousand hours
When any failure is found, replacement is
required even before the specified interval is
reached.
Component
Standard Replacement Interval
Remarks
(1) Cooling Fan
10 years
(2) Main circuit
smoothing capacitor
10 years
(assuming the annual average
ambient temperature of 40 °C)
(3) On-board smoothing
capacitor
10 years
When any failure is found, replacement is
required even before the specified interval
is reached.
