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Chapter 2 Inspection; Inspections On Primary Side (Coil) - Mitsubishi Electric MELSERVO-J5 Series User Manual

Linear servo motor
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2
INSPECTION
The linear servo motor functions as motor when mounted in the equipment (built-in). The IP rating is IP00. Perform the
following inspections and cleaning.
Precautions
• The linear servo motor is structurally unrepairable. If the linear servo motor is damaged, it must be replaced.
• Do not disassemble and/or repair the equipment on customer side.
• Discoloration of the molded resin of the linear servo motor may occurs. Though the lost color may not be the cause of
malfunction, inspect the molded resin.
• If the magnet protective cover is stainless, it may be deformed or damaged if it is strongly pressed or a magnetic body is
attached to it. Take special care of the end part of the product, as it is easily deformed.
2.1

Inspections on primary side (coil)

Attachment of water and oil
Check that the primary and secondary side of the linear servo motor are not wet with water or oil. When the linear servo motor
is wet, the insulation on the primary side deteriorates, and may cause a malfunction. Establish the mechanical structure in
which water and oil are not attached to the linear servo motor.
Molded resin
Check the molded resin on the primary side for fragmentations, breakages, and cracks. If fragmentations, breakages, and
cracks are found, replace the primary side, as insulation have deteriorated and may cause a malfunction.
Scratches on the surface that faces the secondary side (magnet)
Check for scratches on the primary-side surface which faces the secondary side. If there are scratches on the primary-side
surface which faces the secondary side, replace the primary side. If scratches appear on the primary side due to a foreign
matter caught in the empty clearance between the primary and secondary side, remove the foreign matter, and establish a
mechanical structure to prevent similar situation.
Looseness of mounting screws
Check for loose mounting screws on the primary side. When the mounting screws on the primary side are loose, tighten the
applicable screws.
Scratches and cracks on the linear servo motor cables
Check for scratches and cracks on the linear servo motor cables. If the linear servo motor cables have any scratches or
cracks, replace the applicable cables. Especially when the cables are moved, make inspections periodically.
2 INSPECTION
14
2.1 Inspections on primary side (coil)

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