
B-65270EN/05 4.SERVO FUNCTION DETAILS
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(3) Detach the linear motor power line from the servo amplifier, then
connect the power line to the DC power supply.
Connect the + terminal of the DC power supply to phase U of the
power line, and connect the - terminal of the DC power supply to
phase V and phase W of the power line.
U
V
W
+
-
DC power
Coil slider
Fig. 4.14.1(e) Connection of DC power suppl
(4) In the emergency stop state, turn on the power to the CNC and
servo amplifier.
(5) Display No. 353 on the CNC diagnosis screen, and turn on the
power to the DC power supply. Next, increase the current
gradually (DC activation).
When the force of the linear motor produced by current supplied
from the DC power supply exceeds static friction, the linear
motor starts moving, and the linear motor automatically stops at a
position where activation phase = 0.
A position where activating phase = 0 is present at intervals of 60
mm with medium-size and large linear motors, or at intervals of
30 mm with small linear motors.
WARNING
If a large current flows abruptly, the motor
produces a large force, resulting in a very
dangerous situation. When making this adjustment,
be sure to increase the current value gradually
starting from current value = 0 [Ap].
(6) When the linear motor is at rest, read the value of No. 353 on the
CNC diagnosis screen. Turn off the power to the DC power
supply immediately after reading the value of No. 353.
* Make measurements of (5) and (6) several times by changing the
DC activation start position within one pole (medium-size, large
linear motor = 60 mm, small linear motor = 30 mm) to fine
average activating phase data (value of DGN No. 353).