Fault list

Code (inverter display)	Code (MOVITOOLS® MotionStudio in P0-13)	Fault code status word if Bit5 = 1	CANopen Emergency Code	Meaning	Measure
4-20 F	18	0x71	0x1012	Signal loss 4 – 20 mA (> 500 ms)	Check whether the input current falls within the range defined in P2-30 and P2-33. Check the connection cable.
AtF-01	40	0x51	0x1028	The measured stator resistance fluctuates between the phases.	The measured stator resistance of the motor is asymmetrical. Check whether: the motor is connected correctly and free of faults. the windings have the correct resistance and symmetry.
AtF-02	41	0x51	0x1029	The measured stator resistance is too high.	The measured stator resistance of the motor is too high. Check whether: the motor is connected correctly and free of faults. the power rating of the motor corresponds to the power rating of the connected inverter.
AtF-03	42	0x51	0x102A	Measured motor inductance is too low.	The measured motor inductance is too low. Check whether the motor is connected correctly and free of faults.
AtF-04	43	0x51	0x102B	Measured motor inductance is too high.	The measured motor inductance is too high. Check whether: the motor is connected correctly and free of faults. the power rating of the motor corresponds to the power rating of the connected inverter.
AtF-05	44	0x51	0x102C	Timeout of inductance measurement	The measured motor parameters are not convergent. Check whether: the motor is connected correctly and free of faults. the power rating of the motor corresponds to the power rating of the connected inverter.
dAtA-E	19	0x62	0x1013	Internal memory error (DSP)	Contact SEW‑EURODRIVE Service.
dAtA-F	17	0x62	0x1011	Internal memory error (IO)	Contact SEW‑EURODRIVE Service.
E-triP	11	0x1A	0x100B	External error at digital input 5.	NC contact was opened. Check the motor thermistor (if connected).
Enc-01	30	0x0E	0x101E	Communication error between encoder card and inverter.	The encoder feedback is activated in P6-05, and no encoder card is plugged in or the encoder card is not recognized.
ENC02	31	0x0E	0x101F	Speed error (P6-07)	The difference between the actual speed and setpoint speed is greater than the percentage value set in P6-07. This error applies only to vector control or control with encoder feedback. Set a higher value in P6-07. If you wish to deactivate speed monitoring, set P6-07 to 100%.
Enc-03	32	0x0E	0x1020	Incorrect PPR count parameterized.	Check the parameter settings in P6-06 and P1-10.
Enc-04	33	0x0E	0x1021	Encoder channel A fault	The A track of the encoder feedback is not present. Check the wiring.
Enc-05	34	0x0E	0x1022	Encoder channel B fault	The B track of the encoder feedback is not present. Check the wiring.
Enc-06	35	0x0E	0x1023	Encoder channel A and B fault	The A and B tracks of the encoder feedback are not present. Check the wiring.
Enc-07	36	0x0E	0x1024	RS485 data channel error, HIPERFACE^® data channel error	Communication error between encoder card and encoder. Check the encoder card for proper fit and contact.
Enc-08	37	0x0E	0x1025	HIPERFACE^® IO communication channel error	Communication error between encoder card and inverter. Check the encoder card for proper fit and contact.
Enc-09	38	0x0E	0x1026	HIPERFACE^® type is not supported.	During the use of Smart Servo Package, a wrong motor/inverter combination was used. Check whether: The speed class of the CMP.. motor is 4500 min^-1. The nominal motor voltage equals the nominal inverter voltage. A HIPERFACE^® encoder is being used.
Enc-10	39	0x0E	0x1027	Trigger: KTY	KTY has been triggered or is not connected.
Er-LED				Display error	Contact SEW‑EURODRIVE Service.
Err-SC				The keypad has lost the communication connection to the inverter.
Etl-24				External 24 V supply.	Line voltage supply not connected. The inverter is supplied with 24 V externally.
FAULtY				Communication between the controller and power section is interrupted	Contact SEW‑EURODRIVE Service.
F-Ptc	21	0x1F	0x1015	Motor protection triggered	The connected motor protection sensor is defined in P2-33 (PTC, TF, TH, KTY, or PT1000), and connected to analog input 2 (terminal 10).
FAN-F	22	0x32	0x1016	Internal fan fault.	Contact SEW‑EURODRIVE Service.
FLt-dc	13	0x07	0x320D	DC link ripple too high.	Check the current supply
Ho-trP	27	0x27	0x101B	Fault during reference travel.	Check reference cams Check the connection of the limit switches Check the setting of the reference travel type and the required parameters
Inhibit				STO safety circuit open.	Check to see if the terminals 12 and 13 are connected correctly.
Lag-Er	28	0x2A	0x101C	Lag error	Check the following: the encoder connection the wiring of the encoder, motor, and line phases whether the mechanical components can move freely and are not blocked. Extend the ramps. Set a higher P component. Parameterize the speed controller again. Extend the lag error tolerance. Set PLC Prog Task Priority to 10 ms The inverter is operated in the derating and can no longer provide the current for acceleration/constant travel.
I.t-trp	04	0x08	0x1004	Overload of inverter/motor (l2t fault)	Make sure that: The motor nameplate parameters are correctly entered in P1-07, P1-08, and P1-09. In vector mode (P4-01 = 0 or 1), the motor power factor in P4-05 is correct. Auto-tuning has been performed correctly. Check whether: The decimals flash (inverter overloaded), and then increase the acceleration ramp (P1-03) or decrease the motor load. The cable length meets the requirements. The load can move freely and there are no blockages or other mechanical faults (mechanically check the load). The thermal motor protection to UL508C is activated in P4-17. See also "Fault reset delay" in the case of an O-I or hO-I fault
IO DSP COMM loss				Communication between the controller and the power section is interrupted	Contact SEW‑EURODRIVE Service.
ML				Line phase failure	Input phase missing or voltage is outside the specified range
O-I	03	0x01	0x2303	Short-term overcurrent at the inverter output. High motor overload.	Fault during stop procedure: Check for premature brake application. Fault during inverter enable: Check whether: The motor nameplate parameters are correctly entered in P1-07, P1-08, and P1-09. In vector mode (P4-01 = 0 or 1), the motor power factor in P4-05 is correct Auto-tuning has been performed correctly. The load can move freely and there are no blockages or other mechanical faults (mechanically check the load). A short circuit between the phases or a ground fault of a phase occurred at the motor and motor connection cable. The brake is connected correctly, controlled correctly, and correctly released when the motor has a holding brake. There is a dielectric breakdown on the motor between the motor phases or to the stator. Disconnect the motor cable directly at the inverter and measure using a high‑voltage meter with at least 1000 V. Fault during operation: Check the following: Sudden overload or malfunction. The cable connection between the inverter and motor. Whether the acceleration/deceleration time is too short and requires too much power. If you cannot increase P1-03 or P1-04, use a larger inverter. Measures: Reduce the setting of the voltage enhancement in P1-11. Set a longer run-up time in P1-03. Disconnect the motor from the inverter. Enable the inverter again. If this fault occurs again, check the entire system and completely replace the inverter. Fault reset delay (dELAy.t) If the fault occurs again directly after the O-I or hO-I fault messages are reset, the following delay times result for repeated resetting: First reset after 4 seconds Second reset after 8 seconds Third reset after 16 seconds Fourth reset after 32 seconds Further resets after 64 seconds The delay is reset to 4 seconds if no further fault occurs within the delay time.
hO-I	15	0x01	0x230F	Hardware overcurrent fault at the inverter output (IGBT self-protection in case of overload).
O-hEAt	23	0x7C	0x4117	Ambient temperature too high.	Check if the ambient conditions are within the range specified for inverters.
OL				Overload	The output current is higher than the nominal motor current
O-t	8	0x0B		Heat sink overtemperature	The heat sink temperature can be displayed in P0-21. A history log is saved in parameter P0-38 every 30 s before a switch-off with fault. This fault message is displayed at a heat sink temperature of ≥90 °C. Check the following: The ambient temperature of the inverter. The inverter cooling and housing dimensions. The function of the internal cooling fan of the inverter. Reduce the settings of the effective clock frequency in parameter P2-24 or the load on the motor/inverter.
O-torq	24	0x34	0x1018	Maximum torque limit timeout.	Check the motor load. Set a higher value in P6-17 if necessary. If you wish to deactivate torque monitoring, set P6-17 to 0.0 sec.
O-Volt	06	0x07	0x3206	Overvoltage in the DC link	The fault occurs if a high flywheel load or overhauling load is connected, and the excess regenerative energy is transferred back to the inverter. If a fault occurs while stopping or during deceleration, increase the deceleration ramp time P1-04 or connect a suitable braking resistor to the inverter. The proportional gain in P4-03 is reduced in vector mode. In PID control mode, ensure that the ramps are active by reducing P3-11. Additionally check if the supply voltage is within the specified range. Information: The value of the DC bus voltage can be displayed in P0-20. A historical log is saved in parameter P0-36 at 256 ms intervals prior to a switch-off with fault.
OI-b	01	0x04	0x2301	Braking channel overcurrent, braking resistor overload	Make sure that the connected braking resistor does not fall below the minimum value approved for the inverter (see technical data). Check the braking resistor and the cabling for possible short circuits. See also fault reset delay for O-I and hO-I faults
OL-br	02	0x04	0x1002	Braking resistor overloaded	The thermal overload protection function of the braking resistor is active (P6-19 and P6-20). The protection function has detected an overload of the braking resistor. Check the values in P6-19 and P6-20. Check whether the calculated working cycle in P0-56 fits the project planning of the application. Make sure that the braking resistor is operated within its physical limits. To reduce the regenerative energy, you can increase the deceleration ramp, for example. Alternatively, use a larger braking resistor or connect an additional braking resistor in parallel. Observe the minimum braking resistance value for the inverter.
OF-01	60	0x1C	0x103C	Internal connection to option module fault.	Check if all optional fieldbus cards correspond to the same fieldbus type. Contact SEW‑EURODRIVE Service
OF-02	61	0x1C	0x103D	Option module fault	Contact SEW‑EURODRIVE Service.
Out-F	26	0x52	0x101A	Inverter output stage fault	Motor phase failure detection: One or more motor phases were disconnected at the inverter output. Check the motor cable. Check the EMC-compliant wiring of any external control cables. Use shielded cables. As a test, use the internal 24 V supply directly at the digital inputs to rule out faults in the signal cable. As a test, use the internal 24 V supply directly at the STO inputs to rule out faults in the STO circuit. The safety relay at the STO inputs must not send pulsed signals. Check STO for correct wiring. As a test, disconnect the temperature sensor to rule out faults in the sensor cable. As a test, disconnect the motor cable from the inverter to rule out errors originating in the inverter. Contact SEW‑EURODRIVE
P-LOSS	14	0x06	0x310E	Line phase failure	An input phase has been separated or interrupted at an inverter planned for a 3-phase supply.
P-dEF	10	0x09	0x100A	Factory settings have been restored.
Ph-Ib				Unequal voltage on the line phases	Check the device input voltage. Check the values in P0-22, P0-23, P0-24. The values may deviate by a maximum ±10%. Use an input choke if required.
Ph-SEq	45	0x51		Line phases swapped	The inverter requires the correct line phase sequence for controlling the internal fan. Swap any two line phases.
PS-trP	05	0xC8	0x1005	Output stage fault (IGBT self-protection in case of overload)	See O-I fault.
SC-0b5	12	1D		Connection between inverter and keypad interrupted.	Check if there is a connection between the inverter and keypad.
SC-F01	50	0x2B	0x1032	Modbus communication error	Check the communication settings.
SC-F02	51	0x2F	0x1033	SBus/CANopen communication error	Check the following: The communication connection between the inverter and external devices. The clearly assigned address per inverter in the network.
SC-F03	52	0x29	0x1034	Fieldbus module communication error (fieldbus side)	Contact SEW‑EURODRIVE Service.
SC-F04	53	0x29	0x1035	IO option card communication error	Contact SEW‑EURODRIVE Service.
SC-F05	54	0x29	0x1036	LTX module communication error	Contact SEW‑EURODRIVE Service.
SC-LoS				Communication between the controller and power section is interrupted	Contact SEW‑EURODRIVE Service.
SC-OBS				Communication failure with other devices	A keypad has lost the communication connection to the inverter. The communication connection has been disconnected in the master-slave network. Check the addresses of all inverters in the network.
SF				Switching frequency decreased	The PWM frequency was automatically decreased due to the heat sink temperature.
SP-Err	31	0x0E	0x101F	Speed error (P6-07)	The difference between the actual speed and setpoint speed is greater than the percentage value set in P6-07. This error applies only to vector control or control with encoder feedback. Set a higher value in P6-07. If you wish to deactivate speed monitoring, set P6-07 to 100%.
Sto-F	29	0x73	0x101D	STO circuit fault	The safety relay must not transmit test pulses. Check the voltage source. STO+ at terminal 12 must be > 18 V.
StoP				The inverter is not enabled.	Activate the enable. Make sure that the enable is switched on after the STO for the hoist function.
th-Flt	16	0x1F	0x1010	Faulty thermistor on the heat sink.	Contact SEW‑EURODRIVE Service.
type-f				Parameter module and inverter are not compatible.	The parameter module used is not of type LT BP C
U-dEF				User settings loaded.	The parameter set saved in P6-26 is restored.
U-torq	25	0x34	0x1019	Minimum torque limit timeout (hoist).	The torque threshold has not been exceeded in time. Adjust the time in P4-16 according to the premagnetization time (P7-12). Check the torque limit in P4-15.
U-t	09	0x75	0x4209	Undertemperature	The ambient temperature is below the specified ambient temperature range (10.2 Ambient conditions). Provide a suitable heat source.
U-Volt	07	0xC6	0x3207	DC link undervoltage	Occurs routinely when switching off the inverter. Check the line voltage if this occurs while the inverter is running.
USr-cL				Parameter backup successfully deleted	The parameter set was successfully deleted using P6-26.
USr-PS				Parameter backup successfully completed.	The parameter set was successfully backed up using P6-26.