Error 20 Device monitoring

Error: 20.01 (1401_hex \| 5121_dec) Description: Supply voltage fault

	Cause	Measure
	Internal electronics supply voltage or externally connected DC 24 V supply voltage not within permitted voltage range.	– Check the voltage level of the external DC 24 V supply voltage and check for correct connection. – Acknowledge the error. – If the fault occurs repeatedly, contact SEW- EURODRIVE Service.
	24 V power supply unit overloaded.	Check the project planning for the power demand.

Error: 20.02 (1402_hex \| 5122_dec) Description: Supply voltage overloaded

Cause	Measure
The current load on the current paths of the DC 24 V supply voltage inside the device is too high. The signal outputs of the device were therefore de-energized.	– Remove all external consumers: – from the digital outputs of the basic device – from any options that may be present – from all encoder connections – from other consumers at the DC 24 V output voltage terminals – Acknowledge the error. – Reconnect the consumers with the device, one after the other, until the error message appears once again. – Connect a consumer with a lower current consumption or eliminate the short circuit.

Error: 20.02 (1402_hex | 5122_dec)

Description: Supply voltage overloaded

Cause

Measure

The current load on the current paths of the DC 24 V supply voltage inside the device is too high. The signal outputs of the device were therefore de-energized.

– Remove all external consumers:

– from the digital outputs of the basic device

– from any options that may be present

– from all encoder connections

– from other consumers at the DC 24 V output voltage terminals

– Acknowledge the error.

– Reconnect the consumers with the device, one after the other, until the error message appears once again.

– Connect a consumer with a lower current consumption or eliminate the short circuit.

Error: 20.03 (1403_hex \| 5123_dec) Description: Safety card undervoltage DC 24 V

Cause	Measure
Undervoltage of DC 24 V supply voltage detected.	– Check the DC 24 V supply voltage. – Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.03 (1403_hex | 5123_dec)

Description: Safety card undervoltage DC 24 V

Cause

Measure

Undervoltage of DC 24 V supply voltage detected.

– Check the DC 24 V supply voltage.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.04 (1404_hex \| 5124_dec) Description: Safety card overvoltage DC 24 V

Cause	Measure
Overvoltage of DC 24 V supply voltage detected.	– Check the DC 24 V supply voltage. – Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.04 (1404_hex | 5124_dec)

Description: Safety card overvoltage DC 24 V

Cause

Measure

Overvoltage of DC 24 V supply voltage detected.

– Check the DC 24 V supply voltage.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.05 (1405_hex \| 5125_dec) Description: Safety card overvoltage protection DC 24 V

Cause	Measure
Error in overvoltage protection circuit.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.05 (1405_hex | 5125_dec)

Description: Safety card overvoltage protection DC 24 V

Cause

Measure

Error in overvoltage protection circuit.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.06 (1406_hex \| 5126_dec) Description: Safety card short-circuit protection DC 24 V

Cause	Measure
Error detected during test of overvoltage protection.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.06 (1406_hex | 5126_dec)

Description: Safety card short-circuit protection DC 24 V

Cause

Measure

Error detected during test of overvoltage protection.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.07 (1407_hex \| 5127_dec) Description: Internal hardware fault

Cause	Measure
Error in device hardware.	– Acknowledge the error. – If the error occurs repeatedly, replace the device.

Error: 20.07 (1407_hex | 5127_dec)

Description: Internal hardware fault

Cause

Measure

Error in device hardware.

– Acknowledge the error.

– If the error occurs repeatedly, replace the device.

Error: 20.08 (1408_hex \| 5128_dec) Description: Fan – warning

Cause	Measure
Fan function impaired.	– Check fan for contamination. – If the warning occurs repeatedly, contact SEW‑EURODRIVE Service.

Error: 20.08 (1408_hex | 5128_dec)

Description: Fan – warning

Cause

Measure

Fan function impaired.

– Check fan for contamination.

– If the warning occurs repeatedly, contact SEW‑EURODRIVE Service.

Error: 20.09 (1409_hex \| 5129_dec) Description: Fan – fault

Cause	Measure
Fan defective.	Contact SEW‑EURODRIVE Service.

Error: 20.09 (1409_hex | 5129_dec)

Description: Fan – fault

Cause

Measure

Fan defective.

Contact SEW‑EURODRIVE Service.

Error: 20.10 (140A_hex \| 5130_dec) Description: Fan – supply voltage fault

Cause	Measure
Supply voltage of fan missing.	Contact SEW‑EURODRIVE Service.

Error: 20.10 (140A_hex | 5130_dec)

Description: Fan – supply voltage fault

Cause

Measure

Supply voltage of fan missing.

Contact SEW‑EURODRIVE Service.

Error: 20.11 (140B_hex \| 5131_dec) Description: STO – switching delay

	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 error.
	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.

Error: 20.12 (140C_hex \| 5132_dec) Description: Safety card temperature error

Cause	Measure
Measured temperature outside specified value range.	– Switch the device off and on again. – Take measures to comply with the temperature range specified for the safety module. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.12 (140C_hex | 5132_dec)

Description: Safety card temperature error

Cause

Measure

Measured temperature outside specified value range.

– Switch the device off and on again.

– Take measures to comply with the temperature range specified for the safety module.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.13 (140D_hex \| 5133_dec) Description: Safety card undervoltage DC 3.3 V

Cause	Measure
Undervoltage of DC 3.3 V supply voltage detected.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.13 (140D_hex | 5133_dec)

Description: Safety card undervoltage DC 3.3 V

Cause

Measure

Undervoltage of DC 3.3 V supply voltage detected.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.14 (140E_hex \| 5134_dec) Description: Safety card overvoltage DC 3.3 V

Cause	Measure
Overvoltage of DC 3.3 V supply voltage detected.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.14 (140E_hex | 5134_dec)

Description: Safety card overvoltage DC 3.3 V

Cause

Measure

Overvoltage of DC 3.3 V supply voltage detected.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.15 (140F_hex \| 5135_dec) Description: Safety card DC 12 V encoder supply voltage

Cause	Measure
Upper or lower limit value of DC 12 V encoder supply voltage exceeded.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.15 (140F_hex | 5135_dec)

Description: Safety card DC 12 V encoder supply voltage

Cause

Measure

Upper or lower limit value of DC 12 V encoder supply voltage exceeded.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.16 (1410_hex \| 5136_dec) Description: Safety card DC 12 V encoder voltage supply

Cause	Measure
Upper or lower limit value of DC 24 V encoder supply voltage exceeded.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.16 (1410_hex | 5136_dec)

Description: Safety card DC 12 V encoder voltage supply

Cause

Measure

Upper or lower limit value of DC 24 V encoder supply voltage exceeded.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.17 (1411_hex \| 5137_dec) Description: Undervoltage encoder reference voltage

Cause	Measure
Undervoltage of encoder reference voltage detected.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.17 (1411_hex | 5137_dec)

Description: Undervoltage encoder reference voltage

Cause

Measure

Undervoltage of encoder reference voltage detected.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.18 (1412_hex \| 5138_dec) Description: Overvoltage encoder reference voltage

Cause	Measure
Overvoltage of encoder reference voltage detected.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.18 (1412_hex | 5138_dec)

Description: Overvoltage encoder reference voltage

Cause

Measure

Overvoltage of encoder reference voltage detected.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.19 (1413_hex \| 5139_dec) Description: Safety card undervoltage of reference voltage

Cause	Measure
Undervoltage of reference voltage detected.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.19 (1413_hex | 5139_dec)

Description: Safety card undervoltage of reference voltage

Cause

Measure

Undervoltage of reference voltage detected.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.20 (1414_hex \| 5140_dec) Description: Safety card overvoltage of reference voltage

Cause	Measure
Overvoltage of reference voltage detected.	– Switch the device off and on again. – If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.20 (1414_hex | 5140_dec)

Description: Safety card overvoltage of reference voltage

Cause

Measure

Overvoltage of reference voltage detected.

– Switch the device off and on again.

– If the fault occurs repeatedly, replace the safety card and send it together with the fault number to SEW-EURODRIVE. For further support, contact SEW‑EURODRIVE Service.

Error: 20.21 (1415_hex \| 5141_dec) Description: External 24 V backup voltage missing

Cause	Measure
In the current configuration, the device is only fully functional with external backup voltage.	Connect backup voltage and energize.

Error: 20.21 (1415_hex | 5141_dec)

Description: External 24 V backup voltage missing

Cause

Measure

In the current configuration, the device is only fully functional with external backup voltage.

Connect backup voltage and energize.

Error: 20.22 (1416_hex \| 5142_dec) Description: Pre-charge protection defective

Cause	Measure
Internal fuse or reverse polarity protection defective.	Contact SEW‑EURODRIVE Service.

Error: 20.22 (1416_hex | 5142_dec)

Description: Pre-charge protection defective

Cause

Measure

Internal fuse or reverse polarity protection defective.

Contact SEW‑EURODRIVE Service.

Error: 20.23 (1417_hex \| 5143_dec) Description: Temperature detection in power section faulty

Cause	Measure
Error in device hardware. Power section does not provide temperature data.	– Acknowledge the error. – Contact SEW-EURODRIVE Service.

Error: 20.23 (1417_hex | 5143_dec)

Description: Temperature detection in power section faulty

Cause

Measure

Error in device hardware. Power section does not provide temperature data.

– Acknowledge the error.

– Contact SEW-EURODRIVE Service.

Error: 20.24 (1418_hex \| 5144_dec) Description: Required communication module missing

Cause	Measure
A communication module used in the device configuration has been removed.	Plug in the communication module again.

Error: 20.24 (1418_hex | 5144_dec)

Description: Required communication module missing

Cause

Measure

A communication module used in the device configuration has been removed.

Plug in the communication module again.

Error: 20.25 (1419_hex \| 5145_dec) Description: Communication module added

Cause	Measure
A communication module that is not used in the device configuration has been added.	Remove the communication module.

Error: 20.25 (1419_hex | 5145_dec)

Description: Communication module added

Cause

Measure

A communication module that is not used in the device configuration has been added.

Remove the communication module.

Error: 20.28 (141C_hex \| 5148_dec) Description: Interior fan – warning

Cause	Measure
Function of interior fan impaired.	Contact SEW‑EURODRIVE Service.

Error: 20.28 (141C_hex | 5148_dec)

Description: Interior fan – warning

Cause

Measure

Function of interior fan impaired.

Contact SEW‑EURODRIVE Service.

Error: 20.29 (141D_hex \| 5149_dec) Description: Interior fan – fault

Cause	Measure
Interior fan defective.	Contact SEW‑EURODRIVE Service.

Error: 20.29 (141D_hex | 5149_dec)

Description: Interior fan – fault

Cause

Measure

Interior fan defective.

Contact SEW‑EURODRIVE Service.

Error: 20.30 (141E_hex \| 5150_dec) Description: Interior fan – supply voltage fault

Cause	Measure
Supply voltage of interior fan not present.	Contact SEW‑EURODRIVE Service.

Error: 20.30 (141E_hex | 5150_dec)

Description: Interior fan – supply voltage fault

Cause

Measure

Supply voltage of interior fan not present.

Contact SEW‑EURODRIVE Service.

Error: 20.31 (141F_hex \| 5151_dec) Description: Supply voltage on gateway overloaded

Cause	Measure
The connected CBus stations overload the DC 24 V supply voltage at the gateway.	– Check the cabling. – Reduce the number of CBus stations.

Error: 20.31 (141F_hex | 5151_dec)

Description: Supply voltage on gateway overloaded

Cause

Measure

The connected CBus stations overload the DC 24 V supply voltage at the gateway.

– Check the cabling.

– Reduce the number of CBus stations.

Error: 20.32 (1420_hex \| 5152_dec) Description: Unexpected restart

Cause	Measure
Restart of device not triggered by normal device function.	– Switch the device off and on again. – If the fault occurs repeatedly, contact SEW- EURODRIVE Service.

Error: 20.32 (1420_hex | 5152_dec)

Description: Unexpected restart

Cause

Measure

Restart of device not triggered by normal device function.

– Switch the device off and on again.

– If the fault occurs repeatedly, contact SEW- EURODRIVE Service.

Error: 20.33 (1421_hex \| 5153_dec) Description: Voltage outside valid range

Cause	Measure
The functionally safe component of the device has determined that the 24 V supply voltage is outside the valid range.	Check the supply voltage.

Error: 20.33 (1421_hex | 5153_dec)

Description: Voltage outside valid range

Cause

Measure

The functionally safe component of the device has determined that the 24 V supply voltage is outside the valid range.

Check the supply voltage.

Error: 20.34 (1422_hex \| 5154_dec) Description: Critical error

Cause	Measure
A fault was detected by the functionally safe component of the device.	Replace device.

Error: 20.34 (1422_hex | 5154_dec)

Description: Critical error

Cause

Measure

A fault was detected by the functionally safe component of the device.

Replace device.

Error: 20.35 (1423_hex \| 5155_dec) Description: System error

Cause	Measure
A system error was detected by the functionally safe component of the device.	Replace device.

Error: 20.35 (1423_hex | 5155_dec)

Description: System error

Cause

Measure

A system error was detected by the functionally safe component of the device.

Replace device.

Error: 20.36 (1424_hex \| 5156_dec) Description: Voltage oscillations detected

Cause	Measure
The oscillation of the DC link voltage is outside the permitted range.	Check DC link voltage for oscillations.

Error: 20.36 (1424_hex | 5156_dec)

Description: Voltage oscillations detected

Cause

Measure

The oscillation of the DC link voltage is outside the permitted range.

Check DC link voltage for oscillations.