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James GeorgeSep 9, 2025
What does a heatsink fan warning mean on Lenze Inverter?
- RRachel RamosSep 9, 2025
If your Lenze Inverter displays a heatsink fan warning, you should clean the fan and ventilation slots. If required, replace the fan.
What does a heatsink fan warning mean on Lenze Inverter?
If your Lenze Inverter displays a heatsink fan warning, you should clean the fan and ventilation slots. If required, replace the fan.
What to do if Lenze Inverter shows device utilization (Ixt) too high?
If your Lenze Inverter displays an error indicating the device utilization (Ixt) is too high, consider the following: * Verify the drive sizing is appropriate for the application. * Reduce the maximum overload current of the inverter (parameter 0x6073). * For applications with high mass inertias, reduce the maximum overload current of the inverter (0x6073) to 150%.
What to do if Lenze i550-C0.25/120-1 Inverter has short circuit or earth leakage on motor side?
If your Lenze Inverter reports a short circuit or earth leakage on the motor side, take these steps: * Inspect the motor cable for damage. * Consider the length of the motor cable. * Use a shorter or lower-capacitance motor cable.
How to fix Lenze Inverter power section overtemperature?
If your Lenze Inverter is experiencing a power section overtemperature issue, try the following: * Check the mains voltage. * Ensure the device has sufficient cooling by checking the heatsink temperature (0x2D84:001). * Clean the fan and ventilation slots, and replace the fan if needed. * Reduce the switching frequency (0x2939).
What to do if Lenze i550-C0.25/120-1 shows i²*t overload (thermal state)?
If the Lenze Inverter indicates an i²*t overload (thermal state), you can try the following: * Verify the drive sizing is adequate. * Inspect the machine/driven mechanics for excessive load. * Check the motor data settings. * Reduce the values for slip compensation (0x2B09:001, 0x2B09:002) and oscillation damping (0x2B0A:001, 0x2B0A:002).
How to resolve DC bus overvoltage on Lenze Inverter?
If the Lenze Inverter displays a DC bus overvoltage error, you can: * Reduce the dynamic performance of the load profile. * Check the mains voltage. * Check the settings for the brake energy management.
What to do if automatic start is disabled on Lenze Inverter?
If automatic start is disabled on your Lenze Inverter, deactivate the start command and reset the error.
How to exit keypad full control active on Lenze i550-C0.25/120-1?
If Keypad full control is active on your Lenze Inverter, to exit the control mode, press the keypad key.
What to do if DC-bus voltage is too low for switch-on in Lenze i550-C0.25/120-1?
If the DC-bus voltage is too low for switch-on in your Lenze Inverter, you should: * Check the mains voltage. * Check the fuses. * Check the mains settings.
How to resolve high device utilization (Ixt) in Lenze Inverter?
If your Lenze Inverter indicates that the device utilisation (Ixt) is too high, you should: * Check drive sizing. * Reduce the inverter's maximum overload current. * In case of high mass inertias, reduce maximum overload current of the inverter to 150 %.
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