
1. AC SERVO MOTOR
B-65165E/02 MOTOR MAINTENANCE MAINTENANCE
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(e) Set a new pulse coder and new Oldham’s coupling in the
motor. Although the mounting orientation is not specified in
particular, it is recommended that the pulse coder be set with
the same orientation as before the replacement. This is
because of the convenience of cabling. Place the Oldham’s
coupling with the correct orientation, and engage the teeth.
(f) Fasten the pulse coder with the four M4 hexagonal socket
head bolts.
(g) Replace the packing on the motor cover mounting surface.
Reusing old packing cannot provide sufficient sealing
performance. Whenever taking off the motor cover, be sure
to replace the packing.
(h) Install the connector in the cover in the reverse order of step
(a). Keying is provided for the connector insulator (the
insulating material around the terminals). So, perform
keying (phase) alignment when installing the connector.
(i) Connect the lead wires of the thermal switch. Peel off about
1 cm of the jacket from the cut end of each motor lead wire,
and tie the wire to the terminal of the pulse coder. Use of a
crimp terminal is recommended for connection. (In case of
an emergency, insulate both connection portions with
insulating tape.)
(j) Install the motor cover. Be careful not to catch the lead wires
of the pulse coder. After installing the motor cover, bolt the
cover.
Cannon connector
Thermal wire
Cut the wire at the root of
the crimp terminal.