Mitsubishi Electric Melservo-J3 Series MR-J3-B, Instruction Manual

Page: 373 / 802

11 - 16
11. TROUBLESHOOTING
Display Name Definition Cause Action
(Note 2)
Alarm
detailed
information
A8D
CC-Link
communication
error
Normal
communication with
the master station
cannot be made. 1. The station number switch (STATION
NO.) is set to 0 or above 64.
Set the station number to
within the range of 1 to 64,
and turn the power on.
2. The baud rate switch (MODE) is set
to other than 0 to 4.
Set the baud rate switch
(MODE) to within the range
of 0 to 4.
3. The transmission status is abnormal. Reexamine the wiring.
4. Incorrect wiring of CC-Link twisted
cable
1. Repair or change the
CC-Link twisted cable.
2. Connect the cable or
connector correctly.
5. CC-Link twisted cable faulty.
6. The CC-Link connector has come off.
7. The termination resistor is not
connected.
Connect the termination
resistor correctly.
8. Noise entered the CC-Link twisted
cable.
9. The termination controller CC-Link
unit was reset.
10. The manufacturer setting switch
(SW2) was changed.
Set the manufacturer
setting switch (SW2) to the
default setting (left).
A8E
Serial
communication
error
Serial
communication
error occurred
between servo
amplifier and
communication
device
(e.g.personal
computer).
1. Communication cable error (Open
cable or short circuit).
Repair or change the
communication cable.
1, 2
2. Communication device (e.g. personal
computer) setting faulty.
Check the communication
setting of the
communication device (e.g.
personal computer).
3. The character codes are incorrect.
Check the character codes.
4
4. Command is incorrect.
Check the command.
8
5. Data No. is incorrect.
Check the data No.
10
(Note 1)
888
Watchdog
CPU, parts faulty. 1. Fault of parts in servo amplifier.
<Check method>
The alarm occurs even if the power is
switched on after disconnection of all
cables except the control circuit power
supply cable.
Change the servo amplifier.
2. External noise caused the CPU in the
servo amplifier to misoperate.
1. Check if the environment
is affected by the noise
of surrounding
electromagnetic valve or
magnetic contactor,
relay, etc.
2. Check the servo amplifier
for grounding.
Note. 1. At power-on, "888" appears instantaneously, but it is not an error.
2. To check the alarm detailed information, MR Configurator is required. The alarm detailed information can be checked with
"Alarm History" window displayed when you select the alarm/alarm history on MR Configurator.