8 TROUBLESHOOTING
8.4 Troubleshooting at power on
291
8
8.4
Troubleshooting at power on
When an error occurs at the power supply of the controller or servo amplifier, improper boot of the servo amplifier might be the
cause. Check the display of the servo amplifier, and take actions according to this section.
*1 ## indicates station No.
Displ
ay
Description
Cause
Checkpoint
Action
AA
The power of the controller was
turned off.
The power of the controller
was turned off.
Check the power of the controller.
Switch on the power of the controller.
An Ethernet cable was
disconnected.
"AA" is displayed in the corresponding
station and following stations.
Replace the Ethernet cable of the
corresponding station.
Check if the connectors (CNIA, CNIB)
are unplugged.
Connect it correctly.
Ab
Initialization communication
with the controller has not
completed.
An Ethernet cable was
disconnected.
"Ab" is displayed in the corresponding
station and following stations.
Replace the Ethernet cable of the
corresponding station.
The power of the servo
amplifier was switched on
when the power of the
controller was off.
Check the power of the controller.
Switch on the power of the controller.
The servo amplifier is
malfunctioning.
"Ab" is displayed in the corresponding
station and following stations.
Replace the servo amplifier.
The controller is
malfunctioning.
Replace the controller, and then check
the repeatability.
Replace the controller.
AC
The synchronous
communications by specified
cycle could not be made.
The setting of the station No.
is incorrect.
Check that a device is not assigned to
the same station No.
Set it correctly.
Station No. does not match
with the station No. set to the
controller.
Check the controller setting and station
No.
Set it correctly.
The communication cycle
does not match.
Check the communication cycle at the
controller side.
Set it correctly.
The servo amplifier parameter
setting is incorrect.
Check the following parameter settings.
[Pr. PN03]
[Pr. PD41]
Set it correctly.
Data link was established
again.
Network configuration was changed.
After checking the network
configuration, cycle the power of the
servo amplifier.
The controller setting is
incorrect.
Check the controller setting.
Set it correctly.
The servo amplifier is
malfunctioning.
"AC" is displayed in the corresponding
station and following stations.
Replace the servo amplifier.
The controller is
malfunctioning.
Replace the controller, and then check
the repeatability.
Replace the controller.
b##.
C##.
d##.
The system has been in the
test operation mode.
Test operation mode has been
enabled.
Test operation select switch (SW1-1) is
turned on.
Turn off the test operation select
switch (SW1-1).
off
Operation mode for
manufacturer setting is set.
Operation mode for
manufacturer setting is
enabled.
Check that the test operation select
switch (SW1-1) and manufacturer
setting switch (SW1-2) are not on.
Set the auxiliary station number
setting switch (SW1) correctly.
Содержание MELSERVO-J4 series
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