Specifications

A - 57
STARTING AXIS
This is the axis to be started, and refers to axis
1 to axis 8/32.
STATUS
Device that indicates the status. Generic name
of signal that turns ON (turns to 1) with the
clutch status, virtual mode status or zero point
return request, etc.
STEPPING MOTOR
A motor that rotates a given angle (example:
0.15°) when 1 pulse is generated. For that
reason, a rotation proportional to the No. of
pulses can be obtained. 2-phase to 5-phase
stepping motors are available. In the 3-phase
type, the rotor rotates in order from A to C
when a voltage is applied. Often found in
compact motors, stepping motors rotate
accurately without feedback. Be careful of step
out when rotation is not accurate.
4) As the excitation phase is
continuously changed, the rotor
rotates in a clockwise direction.
1
) First, the A phase is excited
by a pulse.
2) When the B phase is then excited,
the force works in the direction
shown by the arrows.
3)
The nearest tooth to the
B phase is attracted, and the
rotation stops.
A A
C
CB
B
N
S
C
C
AA
N
S
C
C
AA
N
C
CB
BB
B
AA
STOPPER-FORCED STOP
Method of zero point return during positioning,
which places a stopper at the zero on and
presses against the stopper to stop.
If the axis is kept pressed against the stopper,
the motor could burn or the stopper could be
damaged. Thus, provide a timer and turn the
motor OFF after a set time, or provide means
to detect a sudden increase in the motor
torque when pressing and turn the motor OFF,
etc.
Zero point return
Zero point
Stopper
STROKE
The stroke is the variation in the operation by
the distance from a stopped state to the next
stopped state after a movement.
STROKE LIMIT
This is the range in which a positioning
operation is possible, or the range in which the
machine can be moved without damage
occurring. For operations using a worm gear,
the stroke limit is determined by the length of
the screw. For operations using a fixed-
dimension feed, it is determined by the max.
dimension to be cut.
The upper and lower limits are set with the
parameters. However, for safety purposes, a
separate limit switch wired to the external
signal input unit should be provided so that the
operation can be stopped automatically.
Lower limit
0
Upper limit
3m
Positioning within 3m is possible
Emergency stop
limit switch