Fault 28 FCB drive functions
Error: 28.1 (1C01hex | 7169dec) Description: FCB 11/12 – Searching zero pulse timeout | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Failed to find zero pulse of encoder's C track within specified search time during reference travel. | Check the encoder wiring. | |
Error: 28.2 (1C02hex | 7170dec) Description: FCB 11/12 – Hardware limit switch before reference cam | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
The hardware limit switch was reached during reference travel. The reference cam was not detected. | Make sure that the reference cam is not installed downstream of the hardware limit switch. | |
Error: 28.3 (1C03hex | 7171dec) Description: FCB 11/12 – Hardware limit switch and reference cam not flush | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Hardware limit switch and reference cam not mounted flush. | Make sure that the reference cam and the hardware limit switch are mounted flush. | |
Error: 28.4 (1C04hex | 7172dec) Description: FCB 11/12 – Faulty reference offset | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Error determining reference offset. | – Make sure that the reference offset is smaller than the "Modulo maximum" limit value. – When using a single-turn absolute encoder, make sure that the reference offset is larger than one encoder revolution. – Make sure that an encoder has been inserted when assigning the encoder as the source of the actual position. | |
Error: 28.5 (1C05hex | 7173dec) Description: FCB 11/12 – Referencing not possible | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
In the active drive train during encoder assignment, no encoder was specified as the source of the actual position. | – Set an encoder as the source of the actual position. –"Reference all encoders of the drive train" = "Yes" | |
The reference travel type "Absolute encoder position" is only permitted for absolute encoders in the position mode "Linear mode" or "Single-turn absolute position". | – Adjust the positioning mode of the encoder. – Use a different reference travel type | |
Either no encoders are assigned in the active drive train, or there is no referenceable position present. | Assign encoder. | |
Error: 28.6 (1C06hex | 7174dec) Description: FCB 11/12 – Limit switch/reference cam not flush/overlapping with fixed stop | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Hardware limit switch and reference cam hit at the same time during reference travel to fixed stop. | Check whether the positions of the hardware limit switch and reference cam for reference travel are correctly set. | |
During reference travel to fixed stop and active speed changeover at hardware limit switch or reference cam, the fixed stop has been reached without the hardware limit switch or reference cam being hit. | Check whether the positions of the hardware limit switch and reference cam for reference travel are correctly set. | |
Error: 28.7 (1C07hex | 7175dec) Description: FCB 21 – Required total torque too high | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The required total torque is greater than the permitted maximum torque at the motor shaft. The total torque is calculated from the torque specification and the determined/specified load torque. | – Reduce the torque specification. – Change the direction of rotation. – Increase the power of the drive. | |
Error: 28.8 (1C08hex | 7176dec) Description: FCB 21 – Total torque not reached | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The required total torque (at least 90%) was not reached. The total torque is calculated from the torque specification and the determined/specified load torque. | – Reduce the torque specification. – Check the limit values of the inverter. – Check the motor connection. | |
Error: 28.9 (1C09hex | 7177dec) Description: FCB 18 – Rotor position identification not possible | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Rotor position identification with an incremental encoder was aborted. | – Restart the rotor position identification. – Check whether the encoder is properly connected. – Check whether the encoder is defective. | |
Result of rotor position identification (measured encoder offset) cannot be stored in encoder. | Store the measured encoder offset in the inverter | |
In the "Automatic" operating mode, the result of rotor position identification (measured encoder offset) cannot be stored in the encoder. In this operating mode, the measured value can only be stored in the inverter | – Set the operating mode to "Manual". or – Store the measured encoder offset in the inverter. | |
Error: 28.10 (1C0Ahex | 7178dec) Description: FCB 25 – Unbalanced motor phases | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Significantly different values determined in the 3 phases while measuring stator resistances. | – Check whether the motor is properly connected. – Check all contact points on the motor and inverter. – Check the motor and motor cable for damage. | |
Error: 28.11 (1C0Bhex | 7179dec) Description: FCB 25 – High impedance motor phase | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
At least one motor phase could not be measured during motor parameter measurement. | – Check whether the motor is properly connected. – Check all contact points on the motor and inverter. – Check the motor and motor cable for damage. | |
Error: 28.12 (1C0Chex | 7180dec) Description: FCB 25 – Stator resistance measurement timeout | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Motor parameter measurement activated while motor is turning. | – Stop motor. – Start motor parameter measurement when the motor is at standstill. | |
Error: 28.13 (1C0Dhex | 7181dec) Description: FCB 25 – Characteristic curve identification not possible | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The characteristic curve cannot be clearly identified by the motor parameter measurement. | Contact SEW‑EURODRIVE Service. | |
Error: 28.14 (1C0Ehex | 7182dec) Description: Modulo minimum and modulo maximum not plausible | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
The value of the "Modulo minimum" parameter is greater than the value of the "Modulo maximum" parameter. | Correct the parameter values. | |
Error: 28.15 (1C0Fhex | 7183dec) Description: FCB 25 – Timeout | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Measuring of rotor resistance, leakage inductance, and stator inductance not completed. | Contact SEW‑EURODRIVE Service. | |
Error: 28.17 (1C11hex | 7185dec) Description: FCB only possible for drive train 1 | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The active FCB can only be operated if drive train 1 is set as the active drive train. | Select drive train 1 as the active drive train. | |
Error: 28.18 (1C12hex | 7186dec) Description: FCB 21 – Brake missing | ||
|---|---|---|
| Response: Application stop + output stage inhibit | |
Cause | Measure | |
No brake has been parameterized in the inverter. However, a brake is required to perform the brake test. | – Parameterize the brake in drive train 1. – Start FCB 21 again. | |
Error: 28.19 (1C13hex | 7187dec) Description: FCB 21 – Encoder missing | ||
|---|---|---|
| Response: Application stop + output stage inhibit | |
Cause | Measure | |
No encoder has been parameterized in the inverter. However, an encoder is required to detect a movement of the drive. | – Parameterize the encoder in drive train 1. – Use an encoder for speed control or position control. – Start FCB 21 again. | |
Error: 28.20 (1C14hex | 7188dec) Description: FCB 21 – Load torque not within tolerance range | ||
|---|---|---|
| Response: Application stop + output stage inhibit | |
Cause | Measure | |
The measured load torque is outside of the permitted range. The permitted range is defined by the "Load torque" and "Permitted load torque tolerance" parameters as follows: Load torque ± permitted load torque tolerance | – Check the load torque of the system. – Check the "Load torque" parameter value. – Check the "Permitted load torque tolerance" parameter value. | |
Error: 28.21 (1C15hex | 7189dec) Description: FCB 09 – Position overshoot through changes to the active travel order | ||
|---|---|---|
| Response: Application stop + output stage inhibit | |
Cause | Measure | |
Due to changing of the target position or profile values during an active travel order, the drive must travel beyond the target and then reverse to adhere to the profile. Reversing is forbidden in the current operating mode, so when the target position is overrun, the drive triggers an error and stops in the permitted direction. | Change the target position/profile values in such a way that it is still possible to stop at the target position. | |
Error: 28.22 (1C16hex | 7190dec) Description: FCB 09 – Wrong touchprobe data source | ||
|---|---|---|
| Response: Application stop + output stage inhibit | |
Cause | Measure | |
For the "Remaining travel from touchprobe 1" operating mode, the data source of the touchprobe used must be set to "Actual position in user unit". | Change the data source of the touchprobe. | |
Error: 28.23 (1C17hex | 7191dec) Description: Minimum speed too high | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Minimum speed greater than application limit of the speed. | – Reduce the minimum speed. or – Increase the application limit. | |
Error: 28.24 (1C18hex | 7192dec) Description: FCB 05 – Limits of skip range outside setpoint limits | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The speed range of the active speed resonance skip function is larger than the permitted setpoint value range. Both the minimum speed as well as the application limit lie within the skip range. As such, each setpoint falls within the skip range. | – Adjust the speed resonance range skip function. – Adjust the minimum speed. – Adjust the application limit. | |
Error: 28.25 (1C19hex | 7193dec) Description: FCB 11/12 – Faulty reference offset of encoder 1 | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Error determining reference offset for encoder 1. | – Make sure that the reference offset is smaller than the "Modulo maximum" limit value. – When using a single-turn absolute encoder, make sure that the reference offset is not larger than one encoder revolution. | |
Error: 28.26 (1C1Ahex | 7194dec) Description: FCB 11/12 – Faulty reference offset of encoder 2 | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Error determining reference offset for encoder 2. | – Make sure that the reference offset is smaller than the "Modulo maximum" limit value. – When using a single-turn absolute encoder, make sure that the reference offset is not larger than one encoder revolution. | |
Error: 28.27 (1C1Bhex | 7195dec) Description: FCB 11/12 – Reference cam and hardware limit switch active | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
During reference travel, the hardware limit switch was hit when the reference cam was active. | – Check the position of the reference cam to the hardware limit switch. – Check the signal of the reference cam. | |
