Fault 20 Device monitoring
Fault: 20.1 (1401hex | 5121dec) Description: Supply voltage fault | ||
|---|---|---|
| Response: Output stage inhibit System state: Fault acknowledgement with CPU reset | |
Cause | Measure | |
Internal electronics supply voltage or externally connected DC 24 V supply voltage not within permitted voltage range. | – Check the external DC 24 V supply voltage for correct voltage level and connection. – Acknowledge the fault. – If the fault occurs repeatedly, contact SEW-EURODRIVE Service. | |
24 V power supply unit overloaded. | Check the project planning for the power demand. | |
Fault: 20.2 (1402hex | 5122dec) Description: Supply voltage overloaded | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
The power load is too high on the current paths of the DC 24 V supply voltage in the device. The signal outputs of the device have therefore been de-energized. | – Remove all external consumers: – At the digital outputs of the basic unit – At any installed options – At all encoder connections – At other consumers at the DC 24 V output voltage terminals – Acknowledge the fault. – Reconnect the consumers to the device one after the other until the error message appears again. – Connect a consumer with less power consumption or remove the short circuit. | |
Fault: 20.7 (1407hex | 5127dec) Description: Internal hardware fault | ||
|---|---|---|
| Response: Output stage inhibit System state: Fault acknowledgement with CPU reset | |
Cause | Measure | |
Error in device hardware. | – Acknowledge the fault. – If the fault occurs repeatedly, replace the device. | |
Fault: 20.8 (1408hex | 5128dec) Description: Fan – warning | ||
|---|---|---|
| Response: Warning with self reset | |
Cause | Measure | |
Fan function impaired. | – Check the fan for dirt. – If the warning occurs repeatedly, contact SEW-EURODRIVE Service. | |
Fault: 20.9 (1409hex | 5129dec) Description: Fan – fault | ||
|---|---|---|
| Response: Application stop + output stage inhibit | |
Cause | Measure | |
Fan defective. | Contact SEW-EURODRIVE Service. | |
Fault: 20.10 (140Ahex | 5130dec) Description: Fan – supply voltage fault | ||
|---|---|---|
| Response: Emergency stop + output stage inhibit | |
Cause | Measure | |
Supply voltage of fan missing. | Contact SEW-EURODRIVE Service. | |
Fault: 20.11 (140Bhex | 5131dec) Description: STO – switching delay | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Switching delay between STO signals F-STO_P1 and F-STO_P2. | – Check the STO wiring. – Make sure that both STO signals F-STO_P1 and F-STO_P2 are switched simultaneously. – Make sure that both STO signals F-STO_P1 and F-STO_P2 are switched to low level. Then acknowledge the fault. | |
The state change of the STO signals is too slow. | Ensure steeper switching edge. | |
An internal defect has occurred in the STO circuit. | Contact SEW-EURODRIVE Service. | |
Fault: 20.23 (1417hex | 5143dec) Description: Temperature detection in power section faulty | ||
|---|---|---|
| Response: Output stage inhibit | |
Cause | Measure | |
Fault detected in device hardware. Power section does not provide temperature data. | – Acknowledge the fault. – Contact SEW-EURODRIVE Service. | |
