Fault 9 Control mode
Subfault: 9.1 Description: Magnetization of motor not possible | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The user-defined current limit or the output stage monitoring has reduced the possible maximum current to such an extent that the required magnetizing current cannot be set. | – Reduce output stage utilization by reducing the PWM frequency or the load. – Increase user-defined current limit. – Connect a smaller motor. | |
Subfault: 9.2 Description: Operating mode not possible with active control mode | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The active control mode does not support the operating mode selected in the current FCB. EXAMPLE: The V/f control mode does not support the "position control" or "torque control" FCB. | – Use a control mode that supports the required operating mode. If necessary, connect an encoder. or – Select an operating mode that is supported by the current control mode. | |
Subfault: 9.3 Description: Absolute rotor position not available | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The active control mode requires an absolute rotor position. The encoder set as the source of actual speed does not provide an absolute rotor position. | – Use an absolute encoder. or – Identify the rotor position using FCB 18. | |
Subfault: 9.4 Description: Correct current supply of motor not possible | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
With active current monitoring during premagnetization, the required current could not be impressed into the motor. | – Check the motor cable. – Check the motor windings. – If the fault occurs repeatedly, contact SEW‑EURODRIVE Service. INFORMATION to SEW-EURODRIVE Service: Check the output stage. | |
Subfault: 9.5 Description: Maximum output frequency exceeded | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Maximum output frequency exceeded. | – Reduce maximum speed. – Reduce setpoint. | |
Subfault: 9.6 Description: Maximum model speed exceeded | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The speed calculated in ELSM® control mode is too high for the motor control. | – Reduce the sampling cycle ("Speed/position controller sampling cycle" parameter). – Reduce the speed. | |
Subfault: 9.8 Description: Motor protection function – demagnetization | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Motor has already been operated at a speed below the transition speed for too long. | Check the drive selection. | |
Motor has not been started up properly. | Perform motor startup again and run the drive function "FCB 25 Motor parameter measurement". | |
The motor is blocked. | Check the motor for blockage. | |
Subfault: 9.9 Description: Parameter measurement not possible with active motor type | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Only the parameters of an asynchronous motor or synchronous motor can be measured. | Omit parameter measurement. | |
Subfault: 9.10 Description: Rotor stall monitoring | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The current control cannot hold the load torque. | Reduce the load. | |
Subfault: 9.11 Description: Standstill current function not possible | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
In ELSM® control mode, the standstill current function can only be used if the rotor position can be measured. | Activate rotor position measurement and perform the drive function "FCB 25 Motor parameter measurement". | |
Subfault: 9.13 Description: Torque control not within valid speed range | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The speed is too low.
| – Perform motor startup again and run the drive function "FCB 25 Motor parameter measurement". – If the fault occurs repeatedly, contact SEW‑EURODRIVE Service. | |
The flying start function is deactivated. | Activate the flying start function. | |
The motor is blocked. | Check the motor for blockage. | |
Subfault: 9.14 Description: Transition from open-loop speed control to closed-loop speed control failed | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The motor is blocked. | Check the motor for blockage. | |
The motor accelerates too slowly. | Check the setting of the "Load moment of inertia" speed controller parameter. | |
Ohmic resistance was measured incorrectly. | If the ohmic resistance of the motor cable is smaller than 10% of the ohmic resistance of the motor winding, deactivate the "Measure stator resistance" parameter. | |
Motor has not been started up properly. | Perform motor startup again and run the drive function "FCB 25 Motor parameter measurement". | |
The drive is overloaded by mechanical sluggishness. | – Reduce the load. – Check the mechanical components. – Check the drive selection. | |
