Chapter 6 Fault Code Information and Maintenance
6-5
Fault
Name
Fault Descriptions
Corrective Actions
CANopen Heartbeat Time out
（
Only for VFDxxxExxC
）
Connect to CAN bus again and reset CAN bus
CANopen SYNC Time out
（
Only for VFDxxxExxC
）
Check if CANopen synchronous message is
abnormal
CANopen SDO Time out
（
Only for VFDxxxExxC
）
Check if command channels are full
CANopen SDO buffer
overflow
（
Only for
VFDxxxExxC
）
1.
Too short time between commands, please
check SDO message sent from the master
2. Reset
CAN
bus
CAN bus off
（
Only for
VFDxxxExxC
）
1.
Check if it connects to terminal resistor
2.
Check if the signal is abnormal
3.
Check if the master is connected
CAN Boot up fault
（
Only for
VFDxxxExxC
）
1.
Check if the master is connected
2. Reset
CAN
bus
Fault communication protocol
of CANopen
（
Only for
VFDxxxExxC
）
Check if the communication protocol is correct
It will be displayed during
deceleration when Pr.08-24 is
not set to 0 and unexpected
power off occurs, such as
momentary power loss.
1.
Set Pr.08-24 to 0
2.
Check if the input power is stable
Abnormal Communication
Loop
1.
Check if the communication wiring is correct
2.
Return to the factory
6.2 Warning Code Information
The operation of the motor drive is not affected by the warnings below. As soon as the issue warned
is solved, the warning message will disappear.
Warning Name
Warning Descriptions
Corrective Actions
Communication command fault
Verify if there’s any fault occurred on
communication command.
Communication address fault
Verify if there’s any fault occurred on
communication address.
Communication data fault
Verify if there’s any fault occurred on
communication data.
Communication format fault
Verify if there’s any fault occurred on
communication format.
Certain data are being processed
so the motor drive is not responding
at the moment.
The motor drive will respond after it
processes some data.
Communication time out
The communication time exceeds the setting
at Pr09-03 <Time-out Detection>. Verify if the
communication command is correct or if the
