Mitsubishi Electric TM-RFM, Инструкция по эксплуатации

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2. INSTALLATION
2 - 5
2.6 Inspection items
WARNING
Before starting maintenance and/or inspection, turn off the power and wait for 15
minutes or more until the charge lamp turns off. Then, confirm that the voltage
between P+ and N- is safe with a voltage tester and others. Otherwise, an electric
shock may occur. In addition, when confirming whether the charge lamp is off or
not, always confirm it from the front of the servo amplifier.
To avoid an electric shock, only qualified personnel should attempt inspections.
For repair, contact your local sales office.
CAUTION
Do not perform insulation resistance test on the direct drive motor. Otherwise, it
may cause a malfunction.
Do not disassemble and/or repair the equipment on customer side.
It is recommended that the following points to be periodically checked.
(1) Check the bearings, etc. for unusual noise.
(2) Check the cables and the like for scratches or cracks. Especially when the junction cable is movable,
perform periodic inspection according to operating conditions.
(3) Check the power connector and encoder connector connections for looseness.
2.7 Parts having service life
Service life of the following parts is listed below. However, the service life varies depending on operation and
environment. If any fault is found in the parts, they must be replaced immediately regardless of their service
life. For parts replacement, contact your local sales office.
Part name Life guideline Remark
Bearings
20,000 hours to
30,000 hours
The Guideline of Life field gives the reference
time.
If any fault is found before this time is
reached, the part must be changed.
Encoder
20,000 hours to
30,000 hours
Absolute position
storage unit
(option)
20,000 hours to
30,000 hours
When the motor is run at rated speed under rated load, bearings should be exchanged in 20,000 to
30,000 hours as a guideline. This differs on the operating conditions. The bearings must also be changed if
unusual noise or vibration is found during inspection.