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Appendix
Troubleshooting (Causes and Countermeasures for Key Errors)
Error No. Error name Cause Countermeasure
ACF AC power cutoff A momentary power failure or voltage drop
has occurred.
100 V is input when the controller’s power
specification is 200 V.
Check the power-supply voltage.
If the last digit of the controller model name is “1,” the
controller’s power specification is 100 V. If the last digit is
“2,” the power specification is 200 V.
ErG Emergency stop
(This is not an error.)
Emergency-stop signal is input. Emergency-stop signal is input in the following condition:
1. The emergency-stop button on the teaching pendant
is pressed.
2. The applicable input terminal in the system connector
is turned ON.
3. The port switch on the front panel is set to the manual
side.
(The teaching-pendant/PC-software connector is not
connected.)
4. The actuator is of sensor specification and the slider is
stopped on either end of the slider.
Enb Safety gate open Safty gate is open Check the system connector connection.
C9C Defective phase-Z position
error
The phase-Z position is defective or the
reversing amount at home return is small.
Check to see if foreign object has entered the actuator.
Check to see if the mounting bolts are contacting the
slider.
* Change axis-specific parameter No. 22 to “100.”
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