Siemens YASKAWA 840DI Maintenance Manual page 36

2.3 Check of Spindle Motor, Inverter, and Converter
Check object
Motor coupling
Repetitive run out
status
1. Shaft
Sunk key
coupling
2. V-belt
Shaft coupling without
key
Fastening reamer bolt
Wear
Motor
Bearing
Cooling fan
Oil seal
Overall check
IMPORTANT
Table 2.5 Periodical check (cont'd)
Check procedure
Item
−
Viewing
Hearing, vibration
meter and others
(Check timing: Once
per 12,000 hours or 2
years.)
Hearing, vibration
meter and others
(Check timing: Once
per 15,000 hours or 2
years.)
Viewing (Check
timing: Once per
5,000 hours)
Contact our service
group. (Check
timing: Once per
20,000 hours or 5
years)
Note that if you are leaving a machine unused for a long time, take care the following points:
• If you have installed Converter for spare that is not used normally, check if it operates correctly by
energizing it every 6 month.
Specifically, if you have not used the Converter for more than 1 year, re-transform the electrolytic
capacitor in the following method.
• Open the emergency stop signal and turn on the power. ("CHARGE
• Close the emergency stop signal. ("CHARGE" indicator turns on.)
• In this state, keep energizing it for 30 minutes.
• Slightly rotate the motor axis once a week so that it may be lubricated well.
Criteria
Method
−
Scratch or deformation shall
not exist.
Match marker shall not be fit
loose.
Shall not become loose.
Wear shall be a little.
Shall be free from abnormal
sound, increase in noise
level, or temperature rise.
Wear shall be a little.
−
2-8
Corrective action
Readjustment by
direct-coupled centering
Replacement
Restoration
Retightening
Replacement
Consumable parts
replacement by
disassembling and
necessary care
Cooling fan replacement
Seal is to be replaced by
being removed from a
machine. Contact our
service group.
Do not disassemble and
clean the Motor.
"
indicator does not light.)