Chapter 6 Fault Code Information and Maintenance|
Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12 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
Error 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
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