YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 333 / 373

Maintenance and Check
16.2.1 Items to be checked daily
16-4
16.2 Checking Spindle motors and Invertors
Carry out scheduled maintenance management so that the system may keep operating correctly
in good conditions.
16.2.1 Items to be checked daily
Conduct a daily check on the following items:
• To check the MRX, 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 capaci-
tor has been discharged completely; otherwise, you may receive an electric shock or may be
injured.
WARNING
Table 16.4
Check object
Check procedure Criteria Corrective action
Item Method
Environment Ambient
temperature Thermometer
Inverter: 0-55
℃
(Non-congelation)
Motor: 0-40
℃
Improve installation environment
so that the values may become
within normal ranges.
Humidity hygrometer 95%RH or less
(Non-condensation)
Ventilation Viewing Intake/exhaust air shall flow
smoothly Remove any obstacles blocking
smooth air flow.
Power supply
status
Voltage Voltmeter Shall be within a range from -15%
to +10% from rated voltage Adjust the voltage to correct value
(by using different transformer tap
or so)
Current Ammeter Shall be within a rated current. Adjust a load
Appearance Contamination on
Inverter, Motor, and
frame axis hole due
to dust and others Viewing Contamination shall not be exces-
sive 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 ampli-
tude. 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 diffi-
cult, stop the system and remove
any cause.
Inverter motor tem-
perature rise Viewing or thermome-
ter. Shall be free from abnormal tem-
perature rise. Stop and cool the system to check if
the cooling devices such as fan
operates correctly, and make a
repair if any cause is found.