35
FULL
A.C.D.
1.
Set the step angle to full step.
Set the jumper socket for the step angle switch
(FULL / HALF) to “ FULL ”.
2.
Enable the automatic current-cutback
function.
Set the jumper socket for automatic current-
cutback
function (C.C. /A.C.D.) to “A.C.D.”.
3.
Turn on the power supply.
Wait until the motor reaches its standstill current.
4.
Manipulate the potentiometer for adjusting
the motor standstill current (STOP VR).
Adjust the potentiometer using an insulated
screwdriver.
The sum of two DC ammeter readings indicates
the current per motor phase.
Be sure to adjust the current to 40 percent of the
motor’s rated current or below.
Motor standstill current
5.
Turn off the power supply.
This completes the adjustment of the motor
standstill current.
STOP VR
Motor standstill current (A / phase)
Current-cutback ratio (%) = x 100
Motor operating current (A / phase)
■
Current-adjusting potentiometer and
current values
●
The characteristic of motor operating current
indicates the output current corresponding to the
setting of the potentiometer for adjusting the
motor operating current.
●
The characteristic of motor standstill current
indicates the current-cutback ratio corresponding
to the setting of the potentiometer for adjusting
the motor standstill current.
The current-cutback ratio changes according to
the set motor operating current.
Be sure to adjust the current within the rated
current of the motor/driver. Failure to do so may
damage the motor/driver.
NOTE
