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8. Setup
8 - 3
8-1-2 Transition of LED display after power is turned ON
When NC, each drive unit and the power supply unit power have been turned ON, each unit will
automatically execute self-diagnosis and initial settings for operation, etc. The LEDs on the front of the
units will change as shown below according to the progression of these processes.
If an alarm occurs, the alarm No. will appear on the LEDs. Refer to "Chapter 10 Troubleshooting" for
details on the alarm displays.
LED display
Drive units
Serv
o drive unit initialization c
Waiting for
omplete
NC power start up
Waiting for NC
po
wer start up
NC pow
er ON
Executing initial
communication with NC
Emergency stop state
The LED will alternate between
F# E7 not lit.
(# is the set axis No.)
Repeats lighting and going out.
(1st axis in the display example)
NC pow
er ON
Servo ON state Servo OFF sate
NC power OFF