Chapter 8 Troubleshooting|VP3000 
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8-1-2 AC Motor Drive Fault Codes 
Over-current during acceleration (ocA) 
Over-current during deceleration (ocd) 
Over-current during steady operation 
(ocn) 
IGBT short circuit between upper 
bridge and lower bridge (occ) 
Over-current at stop (ocS) 
Over-voltage during acceleration (ovA) 
Over-voltage during deceleration (ovd) 
Over-voltage at constant speed (ovn) 
Over-voltage at stop (ovS) 
Low-voltage during acceleration (LvA) 
Low-voltage during deceleration (Lvd) 
Low-voltage at constant speed (Lvn) 
Password is locked (Pcod) 
Phase loss protection (OrP) 
Modbus transmission time-out (CE10) 
Y-connection / D-connection switch 
error (ydc) 
Capacitor overheating (oH2) 
IGBT temperature detection failure 
(tH1o) 
Reverse direction of the speed 
feedback (SdRv) 
Capacitor hardware error (tH2o) 
Over speed rotation feedback (SdOr) 
Large deviation of speed feedback 
(SdDe) 
Electronic thermal relay 1 protection 
(EoL1) 
Electronic thermal relay 2 protection 
(EoL2) 
Motor overheating PTC (oH3) 
Motor overheating KTY84 (oH3) 
Motor overheating PT100 (oH3) 
Motor overheating PT1000 (oH3) 
Output phase loss U phase (OPHL) 
Output phase loss V phase (OPHL)