Inspections On Secondary Side (Magnet); Inspections Of Linear Encoder - Mitsubishi Electric MELSERVO-J5 Series User Manual

2.2

Inspections on secondary side (magnet)

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.
Exposure and levitation of magnet
Check for the exposure and levitation of the magnet on the secondary side. If the magnet on the secondary side is exposed or
levitated, replace the secondary side immediately.
Magnet protective cover
The secondary side surface is covered with the mold resin or stainless cover to protect the magnet.
• When a foreign matter such as dust is attached to the surface, wipe gently with acetone soaked cloth.
• Check the molded resin on the secondary side for fragmentations, breakages, and cracks. If fragmentations, breakages,
and cracks are found, replace the secondary side.
• Check for scratches on the molded resin of the secondary side. When the magnet is exposed by the scratches on the
molded resin of the secondary side, replace the secondary side. If scratches appear on the secondary 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 secondary side. When the mounting screws on the secondary side are loose, tighten
the applicable screws.
2.3

Inspections of linear encoder

The inspections of the linear encoder may be required. For the inspections of the linear encoder, contact the linear encoder
manufacturer.
2 INSPECTION
2.2 Inspections on secondary side (magnet)
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