Instructions Manual
８－２．Troubleshooting
1. POWER LED does not
・Connection of power supply.
・Wiring error with power
come on.
・Value of power voltage.
supply.
・Power voltage failure.
・Driver failure.
2. The motor is not excited. ・Connection of the motor to
・Wiring error with the motor
(It can be easily
the driver.
and the driver.
rotated by hand.)
・ON/OFF status of the M.F
・The M.F signal is input.
signal.
・HOLD CURRENT is set to zero.
・Value of the HOLD CURRENT
・Driver failure.
ADJUSTMENT trimmer.
3. The motor does not rotate. ・The same check items as
The motor behaves
those under item 2 above.
abnormally.
・Setting of the MOTOR SELECT
・Wrong setting for the PULSE
The motor steps out.
switch.
INPUT TYPE selection.
・Setting of the PULSE INPUT
・Wiring error with the pulse
TYPE SELECT switch.
signal line.
・Connection of the pulse
・Pulse signal of wrong
signal.
specifications.
・Voltage and wave form of the ・DRIVE CURRENT is too low.
pulse signal.
・Setting of the DRIVE CURRENT ・Wrong setting for the step
SELECT switch.
angle.
・Setting of the STEP ANGLE
・Driver failure.
SELECT switch.
・Motor failure.
4. The motor steps out
・Starting pulse speed.
・Starting pulse signal speed
during acceleration.
・Acceleration time.
is too high.
・Acceleration time is too
short.
5. The motor generates
・Setting of the DRIVE CURRENT ・DRIVE CURRENT is higher
excessive heat.
SELECT switch.
than the setting for the
applicable motor.
・Value of the HOLD CURRENT
・The setting for HOLD CURRENT
ADJUSTMENT trimmer.
is too high.
Short-circuiting of the motor output connector may cause the driver to fail.
●The motor output connector and the power line.
●The motor output connector and the motor output connector.
Disconnection of the motor output line may cause the driver to fail.
●Disconnection of the motor output line cable.
●Loose connection of connector.
When the failure phenomenon cannot be remedied, contact our office.
Trouble
Check Item
Assumed Cause
-27-
