Malfunctions of the mechanical drive
The following table shows troubleshooting options for malfunctions of the mechanical drive:
Fault | Possible cause | Measure |
|---|---|---|
Unusual, regular running noise | Meshing/grinding noise: Bearing damage | Contact SEW‑EURODRIVE Service |
Unusual, regular running noise | Knocking noise: Irregularity in the gearing | Contact SEW‑EURODRIVE Service |
Unusual, irregular running noise | Foreign objects in the oil | Stop the drive and contact SEW‑EURODRIVE Service |
Oil leaking from the gear unit cover | Gear unit cover seal leaking | Contact SEW‑EURODRIVE Service |
Oil leaking from the connection box | Internal seal defective | Contact SEW‑EURODRIVE Service |
Oil leaking from the output-side oil seal | Oil seal defective Short-term oil and/or grease leakage at the oil seal is possible in the run-in phase (24 hours running time). | Replace oil seal |
Oil leaking from the output-side oil seal | Too much oil Short-term oil and/or grease leakage at the oil seal is possible in the run-in phase (24 hours running time). | Correct the oil quantity |
Oil leaking from the output-side oil seal | Drive installed in the wrong mounting position or breather valve installed in wrong position. Short-term oil and/or grease leakage at the oil seal is possible in the run-in phase (24 hours running time). | Install the breather valve correctly |
Output shaft does not turn even though the motor is running | Shaft-hub connection in the gear unit interrupted | Send in the drive unit for repair |
Drive unit does not start | Supply cable interrupted | Check connections, correct if necessary |
Drive unit does not start | Fuse blown | Replace fuse |
Drive unit does not start | Motor protection tripped | Check motor protection for correct setting, correct fault if necessary |
Drive unit does not start | Frequency inverter defective, overloaded, incorrectly wired, or incorrectly set | Check frequency inverter, check wiring |
Incorrect direction of rotation | Incorrect setpoint polarity | Check frequency inverter, check setpoints |
Drive unit hums and has high current consumption | Drive is blocked | Check drive |
Drive unit hums and has high current consumption | Frequency inverter set incorrectly | Check frequency inverter |
Drive unit heats up excessively (measure temperature, significantly higher than 100 °C) | Overload | Measure power, use larger drive unit or reduce load if necessary, check travel profile |
Drive unit heats up excessively (measure temperature, significantly higher than 100 °C) | Ambient temperature too high | Observe permitted temperature range |
Drive unit heats up excessively (measure temperature, significantly higher than 100 °C) | Insufficient cooling | Correct cooling air supply or clear cooling air passages |
Drive unit heats up excessively (measure temperature, significantly higher than 100 °C) | Nominal duty type (S1 to S10, EN 60034-1) exceeded, e.g. due to excessive effective torque | Adjust nominal duty type to required operating conditions; if necessary, call in a specialist to determine the correct drive |
Drive unit heats up excessively (measure temperature, significantly higher than 100 °C) | Frequency inverter not optimized | Check frequency inverter |
