Siemens YASKAWA 830DI, Maintenance Manual, Page: 33 / 65

2.3 Check of Spindle Motor, Inverter, and Converter
2-5
2.3 Check of Spindle Motor, Inverter, and Converter
Conduct scheduled maintenance management so that the system may keep operating correctly
in good conditions.
2.3.1 Daily maintenance
Conduct a daily maintenance check on the following items:
• To check the converter, you must turn off the power and wait for 5 minutes before accessing inside
the unit. Be sure to wait until the “CHARGE
”
indicator turns off, showing the smoothing capacitor
has been discharged completely.
Otherwise, you may receive an electric shock or may be injured.
WARNING
Table 2.4 Daily maintenance for Spindle Motor, Inverter, and Converter
Check object
Check procedure
Criteria Corrective action
Item Method
Environment Ambient
temperature Thermometer Inverter/Converter: 0-55 °C
(Non-congelation)
Motor: 0-40 °C Improve installation environment
so that the values may become
within standard ranges.
Humidity Hygrometer 95%RH or less
(Non-condensation)
Ventilation Viewing Intake/exhaust air shall flow
smoothly. Remove any obstacles blocking
smooth airflow.
Power supply
status Voltage Voltmeter Shall be within a range from -15%
to +10% in comparison with rated
voltage. Adjust the voltage within standard
range (by using different
transformer tap or so).
Current Ammeter Shall be within a rated current and
no frequently change. Adjust a load.
Appearance Contamination on
Inverter, Converter,
Motor, and frame
axis hole due to
dust and others Viewing Contamination shall not be
excessive than normal. If contamination is excessive,
clean them.
Operation
status Vibration Touching or
vibration meter Shall be free from abnormal
vibration or increase in the
amplitude. If allowable limit is exceeded,
stop the system and remove any
cause.
Bad smell Smelling Smell of burning is not allowed. Stop the system and remove any
cause.
Abnormal sound Hearing Shall be free from abnormal sound
or increase in noise level. If normal operation becomes
difficult, stop the system and
remove any cause.
Temperature rise of
Inverter, Converter,
and motor Touching or
thermometer Shall be free from abnormal
temperature rise. Stop and cool the system to check
if the cooling devices such as fan
operate correctly. Make a repair if
any trouble is found.