Chapter 8 Troubleshooting|VP3000 
400 
 
8-2 Warning Codes and Troubleshooting 
Communication error 10   
(CE10)   
RS-485 Modbus transmission time-out 
When the communication time exceeds the detection time of Pr. n1-04 (Modbus 
timeout check time) 
Warning Setting Parameter 
“Warning” occurs when Pr. n1-05 = 0 and the motor drive keeps running. 
The drive resets automatically when receiving the next communication packet. 
0: Continue OPER 
1: Warning & continue OPER 
2: Fault & ramp to stop 
3: Fault & coast to stop 
The upper unit does not transmit 
the communication command 
within Pr. n1-04 setting time 
Check if the upper unit transmits the communication command within the setting 
time for Pr. n1-04. 
Malfunction caused by 
interference 
Verify the wiring and grounding of the communication circuit. It is recommended 
to separate the communication circuit from the main circuit, or wire in 90 
degrees for effective anti-interference performance. 
Different communication setting 
from upper unit 
Check if the setting for Pr. n1-03 is the same as the setting for the upper unit. 
Disconnection or bad connection 
of the cable 
Check the cable and replace it if necessary. 
Keypad communication time out   
(CK10)   
Keypad communication data, transmission time-out 
(Keypad auto-detect this error and display it.)   
When the communication time exceeds the detection time of Pr. n1-04 (Modbus 
timeout check time) 
Warning Setting Parameter 
Remove the keypad and then reconnect it to the motor drive