16
z
If the motor is turns in the opposite direction (from the desired direction) after you connect motor
wires to the drive, you can change the direction by reversing the leads going to A and A on the motor
connector.
7. 6 POWER ON
DANGER
z
Do not supply power to the drive without having all of the motor leads firmly connected to their
appropriate terminals. Connect center tap wires to Phase COM_A and COM_B as required, connect
the motor’ s shield to the terminal provided.
z
When the main power of factory or laboratory is OFF by various reasons, be sure to turn OFF the
local power for step drive. The abrupt start of machine may occur when the main power OFF state is
released.
z
During 30 sec after main power OFF, do not contact the connectors of drive. There will be remained
diminishing power. If power is left on, the drive will break down or malfunction
CAUTION
z
When the power applied properly, POWER ON LED is illuminated.
z
Once the drive is properly mounted and all of the required connections have been made, the drive
may be powered up. Initial power should be applied with no pulses being fed to the drive. The motor
will lock into position at its rated static torque. If the automatic low-power mode has been selected
then statistic torque will decrease to STOP % level of its rated static torque after 1 msec. Once the
input pulse rate begins, the motor should begin to step in the step direction. At this point, If the motor
does not have any torque or will not properly rotate, refer to Section 8 for troubleshooting and
possible remedies.
z
Do not make abrupt stop the motor unnecessarily. The regenerated power of motor in sudden stop
may break down the drives.
z
When the abnormal operations or emergency occur, check the general points listed in the last
chapter of this manual.
z
The motor torque increases according to RUN CURRENT set value. However, do not set run current
10% larger than motor rated phase current, it will causes the more vibration, mechanical noise, and
excessive heating in motor. Finally it shortens the life of motors.
z
To prevent the electric shock or drive fail, use the insulated material to modify the dip-switches of
drive.
z
During operation, modifying set switch of the drive may cause electric shock or drive failure.
z
In any condition, the surface temperature of motor should be less than 100
°
C.
