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
・Wrong setting for the motor
The motor behaves
those under item 2 above.
selection.
abnormally.
・Setting of the MOTOR SELECT ・Wiring error with the pulse
The motor steps out.
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.
・Wrong setting for the step
・Setting of the DRIVE CURRENT
angle.
SELECT switch.
・The C.S signal is input.
・Setting of the STEP ANGLE
・Driver failure.
SELECT switch.
・Motor failure.
・ON/OFF status of the C.S
signal.
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 than
excessive heat.
SELECT switch.
the setting for the
・Value of the HOLD CURRENT
applicable motor.
ADJUSTMENT trimmer.
・The setting for HOLD CURRENT
・Setting of the MOTOR SELECT
is too high.
switch.
・Wrong setting for the motor
selection.
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.
When the failure phenomenon cannot be remedied, contact our office.
Trouble
Assumed Cause
Check Item
-26-
