Oriental motor CSK243-ATA Operating Manual page 40

7 Setting
• Adjusting the motor standstill current
1.
Set the jumper socket for the step angle switch
(FULL/HALF) to FULL.
2.
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.
Using an insulated screwdriver, manipulate the
potentiometer for adjusting the motor standstill
current (STOP VR).
Be sure to adjust the current to 40% of the motor's
rated current or below.
The sum of two DC ammeter readings indicates the
current per motor phase.
5.
Turn off the power supply.
This completes the adjustment of the motor standstill current.
After about 0.1 second has passed since the pulse was stopped, the motor's
operating current automatically decreases to the set value of current at motor
standstill.
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.
Current-cutback ratio (%) =
Be sure to adjust the current within the rated current of the motor/driver.
Note
Failure to do so may damage the motor/driver.
−40−
Motor standstill current (A/ phase)
Motor operating current (A/ phase)
STOP VR
× 100