Troubleshooting At Power On - Mitsubishi Electric MR-J4W2 Instruction Manual

8. TROUBLESHOOTING

8.4 Troubleshooting at power on

When the servo system does not boot and system error occurs at power on of the servo system controller,
improper boot of the servo amplifier might be the cause. Check the display of the servo amplifier, and take
actions according to this section.
Display Description
AA Communication with the
servo system controller
has disconnected.
Ab Initialization
communication with the
servo system controller
has not completed.
Cause
The power of the servo Check the power of the servo
system controller was system controller.
turned off.
SSCNET III cable was "AA" is displayed in the
disconnected. corresponding axis and following
axes.
Check if the connectors (CNIA,
CNIB) are unplugged.
The power of the servo "AA" is displayed in the
amplifier was turned off. corresponding axis and following
axes.
All axes are in a state of Check if the disabling control axis
disabling control axis. switches (SW2-2, 2-3, and 2-4)
are on.
Axis No. is set incorrectly. Check that the other servo
amplifier is not assigned to the
same axis No.
Axis No. does not match Check the setting and axis No. of
with the axis No. set to the servo system controller.
the servo system
controller.
Information about the Check the value set in Servo
servo series has not set series (Pr.100) in the simple
in the simple motion motion module.
module.
Communication cycle Check the communication cycle
does not match. at the servo system controller
side.
When using 8 axes or less:
0.222 ms
When using 16 axes or less:
0.444 ms
When using 32 axes or less:
0.888 ms
Connection to MR-J4W3- Check if the communication cycle
_B with software version on servo system controller side is
0.222 ms.
A2 or earlier was
attempted in 0.222 ms
communication cycle.
SSCNET III cable was "Ab" is displayed in the
disconnected. corresponding axis and following
axes.
Check if the connectors (CNIA,
CNIB) are unplugged.
The power of the servo "Ab" is displayed in an axis and
amplifier was turned off. the following axes.
The servo amplifier is "Ab" is displayed in an axis and
malfunctioning. the following axes.
8 - 10
Checkpoint
Switch on the power of the servo
system controller.
Replace the SSCNET III cable of
the corresponding axis.
Connect correctly.
Check the power of the servo
amplifier.
Replace the servo amplifier of the
corresponding axis.
Turn off the disabling control axis
switches (SW2-2, 2-3, and 2-4).
Set it correctly.
Set it correctly.
Set it correctly.
Set it correctly.
Use them with 0.444 ms or more
communication cycle.
Replace the SSCNET III cable of
the corresponding axis.
Connect correctly.
Check the power of the servo
amplifier.
Replace the servo amplifier of the
corresponding axis.
Action