Fault 28 FCB drive functions
Subfault: 28.10 Description: FCB 25 – Asymmetrical 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 connected correctly. – Check all contact points on the motor and inverter. – Check the motor and motor cable for damage. | |
Subfault: 28.11 Description: FCB 25 – At least one phase with high resistance | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
At least one motor phase could not be measured during motor parameter measurement. | – Check whether the motor is connected correctly. – Check all contact points on the motor and inverter. – Check the motor and motor cable for damage. | |
Subfault: 28.12 Description: FCB 25 – Timeout during stator resistance measurement | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Motor parameter measurement activated while motor is turning. | – Stop the motor. – Start motor parameter measurement when the motor is at standstill. | |
Subfault: 28.13 Description: FCB 25 – Characteristic curve identification not possible | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Motor parameter measurement does not allow for unique identification of the characteristic curve. | Contact SEW‑EURODRIVE Service. | |
Subfault: 28.15 Description: FCB 25 – Timeout | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Measuring rotor resistance, LSigma, or stator inductance not completed. | Contact SEW‑EURODRIVE Service. | |
Subfault: 28.23 Description: FCB 05 – Minimum speed greater than application limit | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Minimum speed greater than application limit of the speed. | – Reduce the minimum speed. – Increase the application limit. | |
Subfault: 28.24 Description: FCB 05 – Limits of skip window outside setpoint limits | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The limits of the window of the speed skip function are completely outside the permitted setpoint range. Both the minimum speed as well as the application limit lie within the skip window. No setpoint can be specified within a permitted area. | – Adjust the window of the speed skip function. – Adjust the minimum speed. – Adjust the application limit. | |
