
FANUC AC SPINDLE MOTOR a series
1. ADJUSTMENT
B–65160E/02
16
(c) When the spindle and motor are connected by a gear with an
intermediate shaft, the spindle and motor rotate in the same
direction, regardless of the orientation of the spindle.
Motor
The rotation directions
of the spindle and motor
are determined from this
direction.
The rotation directions
of the spindle and motor
are determined from this
direction.
Spindle Spindle
Motor
Gear–based connection Gear–based connection
Intermediate
shaft
Intermediate
shaft
POSC1: Indicates the mounting direction of position coder.
0: Rotates the spindle and position coder in the same direction.
1: Rotates the spindle and position coder in the reverse direction.
Judge by rotation direction when position coder rotation direction is
viewed from position coder shaft.
Determine the rotation direction of the position coder by viewing the shaft
of the position coder from the near side. Determine the rotation direction
of the spindle by viewing the motor and spindle from the same direction
(usually, from the near side).
For a built–in motor, set the bit to 0 (same direction).
Examples of the rotation direction of the spindle and position coder:
(a) When the spindle and position coder are connected by a belt as
shown below, the spindle and position coder rotate in the same
direction.
Motor
The rotation directions
of the spindle and motor
are determined from this
direction.
The rotation directions
of the spindle and motor
are determined from this
direction.
Spindle
Spindle
Motor
Belt–based
connection
Belt–based
connection
The rotation direction of
the position coder is
determined from this
direction.
The rotation direction
of the position coder
is determined from
this direction.
PC
PC
Position coder Position coder