Yaskawa P1000 Alarms & Faults11/29/2017The Yaskawa P1000 series drive is designed for variable torque applications. During a fault condition, the digital operator will display codes to alert the user to these conditions. The following is a listing of possible codes along with some potential reasons for the code and some solutions that may quickly clear the code allowing the drive operation to continue. bAT Digital Operator Battery Voltage Low - The digital operator battery is low Replace the digital operator battery. boL Braking Transistor Overload Fault - The wrong braking resistor is installed Select the correct braking resistor. bUS Option Communication Error - No signal was received from the PLC. Check for faulty wiring. CE MEMOBUS/Modbus Communication Error - Faulty communications wiring or an existing short circuit. CPF02 A/D Conversion Error - Control circuit is damaged. Replace the control board or the entire drive. CPF03 Control Board Connection Error - Turn off the power and check the connection between the control board and the drive. CPF06 EEPROM Memory Data Error - Turn off the power and check the connection between the control board and the drive. CPF07 Terminal Board Connection Error - Faulty connection between the terminal board and the control board. Turn off the power and reconnect the terminal board. CPF08 Terminal Board Connection Error - Faulty connection between the terminal board and the control board. Turn off the power and reconnect the terminal board. CPF11 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF12 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF13 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF14 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF16 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF17 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF18 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF19 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF20 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF21 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF22 Hybrid IC Error - Hardware is damaged. Cycle Power. Replace hardware. CPF23 Control Board Connection Error - Hardware is damaged. Cycle Power. Replace hardware. CPF24 Drive Unit Signal Fault - The drive capacity cannot be detected correctly. Cycle Power. Replace hardware. CPF25 Terminal Board Not Connected - Hardware is damaged. Cycle Power. Replace hardware. CPF26 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF27 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF28 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF29 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF30 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF31 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF32 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF33 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF34 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF35 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF40 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF41 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF42 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF43 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. E5 SI-T3 Watchdog Timer Error - Data has not been received from the PLC Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command. EF0 Option Card External Fault - An external fault condition is present. Check external causes. EF1 External Fault Terminal S1 - An external fault condition is present. Check external causes. Bad S1 Terminal. EF2 External Fault Terminal S2 - An external fault condition is present. Check external causes. Bad S2 Terminal. EF3 External Fault Terminal S3 - An external fault condition is present. Check external causes. Bad S3 Terminal. EF4 External Fault Terminal S4 - An external fault condition is present. Check external causes. Bad S4 Terminal. EF5 External Fault Terminal S5 - An external fault condition is present. Check external causes. Bad S5 Terminal. EF6 External Fault Terminal S6 - An external fault condition is present. Check external causes. Bad S6 Terminal. EF7 External Fault Terminal S7 - An external fault condition is present. Check external causes. Bad S7 Terminal. EF8 External Fault Terminal S8 - An external fault condition is present. Check external causes. Bad S8 Terminal. Err EEPROM Write Error - Noise has corrupted data. Cycle power. Correct the parameter. FAn Internal Fan Fault - Internal cooling fan has malfunctioned. Check for fan operation. FbH Excessive PID Feedback - PID feedback input is greater than the level set to. Check parameter. FbL PID Feedback Loss - Check parameter. There is a problem with the feedback sensor. GF Ground Fault - A current short to ground exceeded 50% of rated current on the output side of the drive. Check motor/cables. LF Output Phase Loss - Phase loss on the output side of the drive. Check motor/cables. LF3 Power Unit Output Phase Loss 3 - Phase loss on the output side of the drive. Check motor/cables. nSE Node Setup Error - A terminal assigned to the node setup function closed during run. oC Overcurrent - Output current greater than the specified overcurrent level. Check parameter. Check motor. oFA00 Option Card Connection Error - Option compatibility error. The option card installed is not compatible. oFA01 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA03 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA04 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA05 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA06 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA10 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA11 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA12 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA13 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA14 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA15 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA16 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA17 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA30 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA31 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA32 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA33 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA34 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA35 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA36 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA37 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA38 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA39 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA40 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA41 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA42 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA43 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb00 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb01 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFb02 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFb03 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFb11 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFb12 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb13 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb14 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb15 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb16 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb17 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC00 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC01 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFC02 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFC03 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC11 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC12 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC13 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC14 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC15 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC16 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC17 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC50 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC51 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC52 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC53 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC54 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC55 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oH Heatsink Overheat - Check ambient temperature. Check parameter setting. oH1 Heatsink Overheat - Check ambient temperature. Check parameter setting. oH4 Motor Overheat Fault (PTC input) - Check ambient temperature. Check parameter setting. oH5 Motor Overheat Fault (NTC input) - Check ambient temperature. Check parameter setting. oL1 Motor Overload - Load heavy. Increase accel or decel time. oL2 Drive Overload - Load heavy. Increase accel or decel time. oL3 Overtorque Detection 1 - current has exceeded the value set for torque detection. Check parameter setting. oL4 Overtorque Detection 2 - current has exceeded the value set for torque detection. Check parameter setting. oL7 High Slip Braking oL - Use braking resistor. Reduce decel time. oPr Operator Connection Fault - The external operator has been disconnected from the drive. ov Overvoltage - Deceleration time is too short and regenerative energy is flowing from the motor into the drive. Increase decel time. PF Input Phase Loss - Drive input power has an open phase or has a large imbalance. rF Braking Resistor Fault - The resistance of the braking resistor is too low. rH Dynamic Braking Resistor - Deceleration time is too short and excessive regenerative energy is flowing back into the drive. rr Dynamic Braking Transistor - The braking transistor is damaged. Cycle power to the drive and check for reoccurrence of the fault. SC IGBT Short Circuit or Ground Fault - IGBT failure. Cycle power to the drive and check for reoccurrence of the fault. SEr Too Many Speed Search Restarts - Parameters related to Speed Search are set to the wrong values. TdE Time Data Error - An error has occurred in the real-time clock. Replace digital operator. THo Thermistor Disconnect - The thermistor that detects motor temperature has become disconnected. TIE Time Interval Error - An error has occurred in the real-time clock. Replace digital operator. TIM Time Not Set - Set time in parameter o4-17. UL3 Undertorque Detection 1 - Current is below the minimum set value. Check parameter setting. UL4 Undertorque Detection 2 - Current is below the minimum set value. Check parameter setting. UL6 Motor Underload - Current is below the minimum set value. Check parameter setting. UnbC Current Unbalance - Current flow has become unbalanced. Check for damaged transistors. Uv1 Undervoltage - DC Bus Undervoltage. Check parameter setting. Input phase loss. Uv2 Control Power Supply Undervoltage - Voltage is too low for the control drive input power. Ride-through power loss. Uv3 Soft Charge Circuit Fault - Precharge relay or resistor fault. Bad precharge. Uv4 Gate Drive Board Undervoltage - Voltage drop in the gate drive board circuit. Cycle power to see if fault reoccurs. voF Output Voltage Detection Fault - Problem detected with the voltage on the output side of the drive. vToL VT Overload - The output current of the drive has been elevated for a set length of time. For further assistance or if repairs are needed, call on the Yaskawa P1000 drive experts at PES today at 800-732-4695. Back To Blog
Yaskawa P1000 Alarms & Faults11/29/2017The Yaskawa P1000 series drive is designed for variable torque applications. During a fault condition, the digital operator will display codes to alert the user to these conditions. The following is a listing of possible codes along with some potential reasons for the code and some solutions that may quickly clear the code allowing the drive operation to continue. bAT Digital Operator Battery Voltage Low - The digital operator battery is low Replace the digital operator battery. boL Braking Transistor Overload Fault - The wrong braking resistor is installed Select the correct braking resistor. bUS Option Communication Error - No signal was received from the PLC. Check for faulty wiring. CE MEMOBUS/Modbus Communication Error - Faulty communications wiring or an existing short circuit. CPF02 A/D Conversion Error - Control circuit is damaged. Replace the control board or the entire drive. CPF03 Control Board Connection Error - Turn off the power and check the connection between the control board and the drive. CPF06 EEPROM Memory Data Error - Turn off the power and check the connection between the control board and the drive. CPF07 Terminal Board Connection Error - Faulty connection between the terminal board and the control board. Turn off the power and reconnect the terminal board. CPF08 Terminal Board Connection Error - Faulty connection between the terminal board and the control board. Turn off the power and reconnect the terminal board. CPF11 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF12 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF13 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF14 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF16 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF17 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF18 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF19 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF20 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF21 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF22 Hybrid IC Error - Hardware is damaged. Cycle Power. Replace hardware. CPF23 Control Board Connection Error - Hardware is damaged. Cycle Power. Replace hardware. CPF24 Drive Unit Signal Fault - The drive capacity cannot be detected correctly. Cycle Power. Replace hardware. CPF25 Terminal Board Not Connected - Hardware is damaged. Cycle Power. Replace hardware. CPF26 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF27 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF28 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF29 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF30 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF31 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF32 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF33 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF34 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF35 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF40 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF41 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF42 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. CPF43 Control Circuit Error - Hardware is damaged. Cycle Power. Replace hardware. E5 SI-T3 Watchdog Timer Error - Data has not been received from the PLC Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command. EF0 Option Card External Fault - An external fault condition is present. Check external causes. EF1 External Fault Terminal S1 - An external fault condition is present. Check external causes. Bad S1 Terminal. EF2 External Fault Terminal S2 - An external fault condition is present. Check external causes. Bad S2 Terminal. EF3 External Fault Terminal S3 - An external fault condition is present. Check external causes. Bad S3 Terminal. EF4 External Fault Terminal S4 - An external fault condition is present. Check external causes. Bad S4 Terminal. EF5 External Fault Terminal S5 - An external fault condition is present. Check external causes. Bad S5 Terminal. EF6 External Fault Terminal S6 - An external fault condition is present. Check external causes. Bad S6 Terminal. EF7 External Fault Terminal S7 - An external fault condition is present. Check external causes. Bad S7 Terminal. EF8 External Fault Terminal S8 - An external fault condition is present. Check external causes. Bad S8 Terminal. Err EEPROM Write Error - Noise has corrupted data. Cycle power. Correct the parameter. FAn Internal Fan Fault - Internal cooling fan has malfunctioned. Check for fan operation. FbH Excessive PID Feedback - PID feedback input is greater than the level set to. Check parameter. FbL PID Feedback Loss - Check parameter. There is a problem with the feedback sensor. GF Ground Fault - A current short to ground exceeded 50% of rated current on the output side of the drive. Check motor/cables. LF Output Phase Loss - Phase loss on the output side of the drive. Check motor/cables. LF3 Power Unit Output Phase Loss 3 - Phase loss on the output side of the drive. Check motor/cables. nSE Node Setup Error - A terminal assigned to the node setup function closed during run. oC Overcurrent - Output current greater than the specified overcurrent level. Check parameter. Check motor. oFA00 Option Card Connection Error - Option compatibility error. The option card installed is not compatible. oFA01 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA03 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA04 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA05 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA06 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA10 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA11 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFA12 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA13 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA14 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA15 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA16 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA17 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA30 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA31 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA32 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA33 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA34 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA35 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA36 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA37 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA38 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA39 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA40 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA41 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA42 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFA43 Comm Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb00 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb01 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFb02 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFb03 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFb11 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFb12 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb13 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb14 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb15 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb16 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFb17 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC00 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC01 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFC02 Option Card Fault - The option card connection is faulty. Check connection. Replace hardware. oFC03 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC11 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC12 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC13 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC14 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC15 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC16 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC17 Option Card Connection Error - The option card connection is faulty. Check connection. Replace hardware. oFC50 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC51 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC52 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC53 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC54 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oFC55 Option Card Error - The option card connection is faulty. Check connection. Replace hardware. oH Heatsink Overheat - Check ambient temperature. Check parameter setting. oH1 Heatsink Overheat - Check ambient temperature. Check parameter setting. oH4 Motor Overheat Fault (PTC input) - Check ambient temperature. Check parameter setting. oH5 Motor Overheat Fault (NTC input) - Check ambient temperature. Check parameter setting. oL1 Motor Overload - Load heavy. Increase accel or decel time. oL2 Drive Overload - Load heavy. Increase accel or decel time. oL3 Overtorque Detection 1 - current has exceeded the value set for torque detection. Check parameter setting. oL4 Overtorque Detection 2 - current has exceeded the value set for torque detection. Check parameter setting. oL7 High Slip Braking oL - Use braking resistor. Reduce decel time. oPr Operator Connection Fault - The external operator has been disconnected from the drive. ov Overvoltage - Deceleration time is too short and regenerative energy is flowing from the motor into the drive. Increase decel time. PF Input Phase Loss - Drive input power has an open phase or has a large imbalance. rF Braking Resistor Fault - The resistance of the braking resistor is too low. rH Dynamic Braking Resistor - Deceleration time is too short and excessive regenerative energy is flowing back into the drive. rr Dynamic Braking Transistor - The braking transistor is damaged. Cycle power to the drive and check for reoccurrence of the fault. SC IGBT Short Circuit or Ground Fault - IGBT failure. Cycle power to the drive and check for reoccurrence of the fault. SEr Too Many Speed Search Restarts - Parameters related to Speed Search are set to the wrong values. TdE Time Data Error - An error has occurred in the real-time clock. Replace digital operator. THo Thermistor Disconnect - The thermistor that detects motor temperature has become disconnected. TIE Time Interval Error - An error has occurred in the real-time clock. Replace digital operator. TIM Time Not Set - Set time in parameter o4-17. UL3 Undertorque Detection 1 - Current is below the minimum set value. Check parameter setting. UL4 Undertorque Detection 2 - Current is below the minimum set value. Check parameter setting. UL6 Motor Underload - Current is below the minimum set value. Check parameter setting. UnbC Current Unbalance - Current flow has become unbalanced. Check for damaged transistors. Uv1 Undervoltage - DC Bus Undervoltage. Check parameter setting. Input phase loss. Uv2 Control Power Supply Undervoltage - Voltage is too low for the control drive input power. Ride-through power loss. Uv3 Soft Charge Circuit Fault - Precharge relay or resistor fault. Bad precharge. Uv4 Gate Drive Board Undervoltage - Voltage drop in the gate drive board circuit. Cycle power to see if fault reoccurs. voF Output Voltage Detection Fault - Problem detected with the voltage on the output side of the drive. vToL VT Overload - The output current of the drive has been elevated for a set length of time. For further assistance or if repairs are needed, call on the Yaskawa P1000 drive experts at PES today at 800-732-4695.