11. Troubleshooting
11
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21
11.4.2 When alarms and warnings appear in the display
(1) There is no error display, but the motor will not rotate at all.
Investigation items
Investigation results
Remedy
The wiring is incorrect, or there is a
loose screw or broken wire, etc.
Wire the unit correctly. Tighten the
screws. Replace the cable.
1 Check the wiring
around spindle drive
unit. Also check for
loose terminal screws,
broken wires, etc.
No particular problem.
Investigate item 2, and carry out the
appropriate measures.
The voltage exceeds the
specification value.
Return the voltage to the correct
value.
2 Check the input
voltage.
The voltage is within the specification
value.
Investigate item 3, and carry out the
appropriate measures.
The correct value is not set.
Set the correct value.
3 Confirm all spindle
parameters.
The correct value is set.
Investigate item 4, and carry out the
appropriate measures.
The signals are not input, or the
sequence is incorrect. The
orientation command is input.
Correct the input signals.
4 Check the input
signals.
•
Are the ready ON,
forward run and
reverse run signals
input?
•
Particularly, the
forward run and
reverse run signals
must be input 1 sec.
or more after the
ready on signal.
•
Also check if the
forward run and
reverse run signals
are ON
simultaneously.
No particular problem.
Investigate item 5, and carry out the
appropriate measures.
The speed command is not input
correctly.
Correctly input the speed command.
5 Check the speed
command.
The speed command is correctly
input.
Replace the unit.
