Check Of Spindle Motor, Inverter, And Converter; Daily Maintenance - Siemens YASKAWA 840DI Maintenance Manual

2.3

Check of Spindle Motor, Inverter, and Converter

• 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
has been discharged completely.
Otherwise, you may receive an electric shock or may be injured.
2.3.1
Check object
Item
Environment Ambient
temperature
Humidity
Ventilation
Power supply Voltage
status
Current
Appearance Contamination on
Inverter, Converter,
Motor, and frame
axis hole due to
dust and others
Operation Vibration
status
Bad smell
Abnormal sound
Temperature rise of
Inverter, Converter,
and motor
Conduct scheduled maintenance management so that the system may keep operating correctly
in good conditions.

Daily maintenance

Conduct a daily maintenance check on the following items:
Table 2.4 Daily maintenance for Spindle Motor, Inverter, and Converter
Check procedure
Method
Thermometer
Hygrometer
Viewing
Voltmeter
Ammeter
Viewing
Touching or
vibration meter
Smelling
Hearing
Touching or
thermometer

2.3 Check of Spindle Motor, Inverter, and Converter

WARNING
"
indicator turns off, showing the smoothing capacitor
Criteria
Inverter/Converter: 0-55 °C
(Non-congelation)
Motor: 0-40 °C
95%RH or less
(Non-condensation)
Intake/exhaust air shall flow
smoothly.
Shall be within a range from -15%
to +10% in comparison with rated
voltage.
Shall be within a rated current and
no frequently change.
Contamination shall not be
excessive than normal.
Shall be free from abnormal
vibration or increase in the
amplitude.
Smell of burning is not allowed.
Shall be free from abnormal sound
or increase in noise level.
Shall be free from abnormal
temperature rise.
2-5
Corrective action
Improve installation environment
so that the values may become
within standard ranges.
Remove any obstacles blocking
smooth airflow.
Adjust the voltage within standard
range (by using different
transformer tap or so).
Adjust a load.
If contamination is excessive,
clean them.
If allowable limit is exceeded,
stop the system and remove any
cause.
Stop the system and remove any
cause.
If normal operation becomes
difficult, stop the system and
remove any cause.
Stop and cool the system to check
if the cooling devices such as fan
operate correctly. Make a repair if
any trouble is found.