Yaskawa SGDH Linear Sigma Series - Manual (Page 374)

11 Inspection, Maintenance, and Troubleshooting
11.2.1 Linear Servomotor Inspection
11-22
11.2 Inspection and Maintenance
11.2.1 Linear Servomotor Inspection
Simple, daily inspection is sufficient. The inspection and maintenance frequencies in Table 11.8 are only guide-
lines. Increase or decrease the frequency to suit the operating conditions and environment.
If disassembly of the linear servomotor is required because of the linear servomotor failure, contact your
Yaskawa representative.
* Measure across the servomotor FG and the phase-U, phase-V, or phase-W power line.
11.2.2 SERVOPACK Inspection
For inspection and maintenance of the SERVOPACK, follow the inspection procedures in Table 11.9 at least
once every year. Other routine inspections are not required.
• Do not disassemble the linear servomotor.
Failure to observe this caution may result in electric shock or injury.
CAUTION
Table 11.8 Linear Servomotor Inspections
Item Frequency Procedure Comments
Vibration and Noise Daily Touch and listen from safe posi-
tion. Levels higher than normal?
Exterior According to degree
of contamination Clean with cloth or compressed
air. Use alcohol solvent.
Insulation Resistance
Measurement At least once a year Disconnect SERVOPACK and
test insulation resistance
at 500 V. Must exceed 10 M
Ω . ∗
Contact your Yaskawa repre-
sentative if the insulation
resistance is below 10 M
Ω.
Do not perform insulation
resistance measurement and
withstand voltage test for the
sensors.
GAP between
Coil Assembly and
Magnetic Way At least once a year Disconnect the linear servomotor
from the SERVOPACK, and then
check the gap. The GAP dimension stays
unchanged from its initial
value.
Overhaul At least once every 5
years Contact your Yaskawa represen-
tative. The user should not disassem-
ble and clean the servomotor.
Table 11.9 SERVOPACK Inspections
Item Frequency Procedure Comments
Clean Interior and
Circuit Boards At least once a year Check for dust, dirt, and oil
on the surfaces. Clean with cloth or compressed air.
Loose Screws Check for loose terminal
block and connector
screws. Tighten any loose screws.
Defective Parts in
Unit or on
Circuit Boards Check for discoloration,
damage, or discontinuities
due to heating. Contact your Yaskawa representative.