Toshiba VF-PS1 fault codes
Overcurrent pre-alarm: C (continue >>)
Inverter overload pre-alarm: L (continue >>)
Motor overload pre-alarm: L (continue >>)
Overheat pre-alarm: H (continue >>)
Overvoltage pre-alarm reaching PBR operation level: P (continue >>)
Main circuit undervoltage detected: nOFF (continue >>)
(Reserved area): -
Low current alarm: -
Overtorque detection: -
Braking resistor overload pre-alarm: -
Cumulative operation time alarm: -
PROFIBUS/DeviceNet/CC-Link communication error: t1 (continue >>)
RS485 communication error: t2 (continue >>)
(Reserved area): -
Forced deceleration stop due to a momentary power failure: StOP (continue >>)
Pre-alarm stop due to prolonged lower-limit frequency operation: LStP (continue >>)
HEAd/End: Displaying the first/last data elements (continue >>)
AUH: First and last data display in the group (continue >>)
Press MOD to exit the group.
Undo: Button operation temporarily allowed (continue >>)
db: DC braking (continue >>)
DC braking operation is ongoing.
If no issues arise, the message will disappear after a few seconds.
dbOn: Shaft lock control (continue >>)
Er-P: Setting error alarm (continue >>)
Err1, Err2, Err3: Panel display overflow (continue >>)
init: Parameters during startup (continue >>)
Atn: Automatic tuning operation 1 (continue >>)
LStr: Automatic stop at lower limit frequency due to continuous operation (continue >>)
nOFF: Main circuit undervoltage (continue >>)
rtry: Retry (continue >>)
Err1: Set point alarm (continue >>)
Clr: Clear activation notification (continue >>)
This message is displayed when the STOP button is pressed while the error code is shown. The RES signal input terminal is open during trip indication.
EoFF: Emergency stop activation notification (continue >>)
HiLd: Setting error alarm (continue >>)
OFF: ST signal is off (continue >>)
PrF: PWR signal is off (continue >>)
CFF: Control power backup undervoltage error (continue >>)
OC1 - OCP1P: Overcurrent during acceleration (continue >>)
OC2 - OC2P: Overcurrent during deceleration (continue >>)
OC3 - OC3P: Overcurrent at constant speed (continue >>)
OCA1: U phase short circuit (continue >>)
OCA2: V phase short circuit (continue >>)
OCA3: W phase short circuit (continue >>)
OCL: Overcurrent at startup on the load side (continue >>)
OCr: Overcurrent in dynamic braking element (200V-55kW or larger, 400V-90kW or larger) (continue >>)
OH: Overheat (continue >>)
OH2: Thermal stop command from external device (continue >>)
OL1: Inverter overload (continue >>)
OL2: Motor overload (continue >>)
OLr: Dynamic braking resistor overload (continue >>)
OP1: Overvoltage during acceleration (continue >>)
OP2: Overvoltage during deceleration (continue >>)
OP3: Overvoltage during constant speed operation (continue >>)
OL: Overtorque (continue >>)
UC: Low current operation (continue >>)
UP1: Low voltage (main circuit) (continue >>)
E: Emergency stop (continue >>)
EEP1: EEPROM error (continue >>)
EEP2: Startup reading error (continue >>)
EEP3: Startup reading error (continue >>)
EF1: Ground fault (continue >>)
EPH0: Output phase error (continue >>)
EPH1: Input phase error (continue >>)
Err2: Main unit RAM error (continue >>)
Err3: Main unit ROM error (continue >>)
Err4: CPU error (continue >>)
Err5: Communication timeout error (continue >>)
Err6: Gateway sequence error (continue >>)
Err7: Output current sensor error (continue >>)
Err8: Optional unit error (continue >>)
Etn: Automatic tuning error (continue >>)
Etn1 (F410): F410 tuning error (continue >>)
Etn2 (F412): F412 tuning error (continue >>)
Etn3: Motor constant setting error (continue >>)
EtyP: Inverter type error (continue >>)
E-10: Analog input terminal overvoltage (continue >>)
E-11: Sequence error (continue >>)
E-12: Encoder error (continue >>)
E-13: Speed error (overspeed) (continue >>)
E-17: Button malfunction alarm (continue >>)
E-18: Terminal input error (continue >>)
E-19: CPU2 communication error (continue >>)
E-20: V/f control error (continue >>)
E-21: CPU1 malfunction (continue >>)
E-22: Abnormal logic input voltage (continue >>)
E-23: Option 1 error (continue >>)
E-24: Option 2 error (continue >>)
E-25: Position holding failure (continue >>)
E-26: CPU2 malfunction (continue >>)
E-29: Control power backup undervoltage error (continue >>)
SOUt: Step loss (PM motors only) (continue >>)
PrF: Power shutdown circuit error (continue >>)