Keb VFD Fault codes 1
Hello,
When looking at KEB drive fault codes, what should we pay attention to and how can we reset them?
When looking at KEB drive fault codes,
it's important to pay attention to the specific fault code and its
corresponding description, as well as the operating conditions under
which the fault occurred. It's also important to check the drive's manual or online resources to determine the appropriate course of action for the particular fault code.
To reset a fault code on a KEB drive, you will typically need to clear the fault memory
and cycle power to the drive. This can typically be done using the
drive's control panel or via a communication interface such as Ethernet or serial communication.
Again, it's important to refer to the drive's manual or online
resources for specific instructions on how to reset a particular fault
code.
E. OP ERROR over voltage The error message "E. OP ERROR over voltage 1
Error: Overvoltage (DC-bus circuit)" in a control system typically indicates a problem with the DC-bus circuit, where the DC-bus voltage has risen above the permissible value. This can be caused by a number of factors, including poor control adjustment (overshooting), input voltage that is too high, interference voltages at the input, deceleration ramps that are too short, and braking resistors that are damaged or undersized.
To resolve this issue, the following steps may be helpful:
Check control adjustment: You should review the control settings and ensure that they are properly configured to prevent overshooting. If necessary, you may need to adjust the control parameters to reduce overshooting and ensure that the DC-bus voltage stays within the permissible range.
Check input voltage: You should check the input voltage and ensure that it is within the specified range for the control system. If the input voltage is too high, you may need to install a voltage regulator or take other steps to reduce the voltage.
Check for interference: Interference voltages can be caused by a variety of factors, including nearby equipment or electrical noise in the environment. You should check for sources of interference and take steps to reduce or eliminate them, such as shielding the control system or installing filters to block interference.
Check deceleration ramps: If the deceleration ramps are too short, they can cause the DC-bus voltage to rise above the permissible range. You should review the deceleration settings and ensure that they are properly configured to prevent this issue.
Check braking resistor: A damaged or undersized braking resistor can cause the DC-bus voltage to rise above the permissible range. You should inspect the braking resistor and ensure that it is properly sized and in good condition.
If these steps do not resolve the issue, you may need to consult the manufacturer's manual or contact technical support for further assistance.
E. UP ERROR under voltage E. UP ERROR indicates an under voltage (DC-bus circuit) error in a control system. This error can occur if the DC-bus voltage falls below the permissible value. Some common causes of this error include:
Input voltage that is too low or unstable
Inverter rating that is too small for the application
Voltage losses due to incorrect cabling or wiring
Supply voltage breaking down due to generator or transformer issues
One phase of the input voltage being missing (ripple detection)
Separate supply being switched off in the power circuit.
To resolve the issue, you should first check the input voltage and ensure that it is stable and within the acceptable range for the system. You should also inspect the inverter rating and check for any issues with the cabling or wiring. If the problem persists, it may be necessary to consult the manufacturer's manual or contact technical support for further assistance.
E. OC ERROR over current To resolve the E. OC ERROR, you can take the following steps:
Check the acceleration ramps: If the acceleration ramps are too short, it can cause the peak current to be exceeded. Adjusting the ramps can help to reduce the current and prevent the error.
Check the load: If the load is too large when the acceleration stop and constant current limit are turned off, it can cause the peak current to be exceeded. Reducing the load or adjusting the control settings can help to prevent the error.
Check for short-circuits and ground faults: A short-circuit at the output or a ground fault can cause the peak current to be exceeded. Inspect the wiring and connections to ensure that they are properly insulated and grounded.
Check the deceleration ramp: If the deceleration ramp is too short, it can cause the peak current to be exceeded. Adjusting the ramp can help to reduce the current and prevent the error.
Check the motor cable length: If the motor cable is too long, it can cause a voltage drop and increase the current. Shortening the cable or increasing the cable diameter can help to reduce the current and prevent the error.
Check for EMC interference: Electromagnetic interference can cause the current to fluctuate and exceed the limit. Inspect the wiring and shielding to ensure that they are properly installed and grounded. Adding filters or shields can help to reduce the interference and prevent the error.
E.OHI ERROR overheat internal The error message "E.OHI ERROR overheat internal" indicates that the temperature inside the drive has risen above a safe level. This error can only be reset once the drive displays "E.nOHI," which means that the interior temperature has fallen by at least 3°C.
To resolve this issue, you should take the following steps:
Check the ambient temperature: Ensure that the drive is operating in an environment with a temperature within the acceptable range specified by the manufacturer.
Check the cooling system: Make sure that the cooling system, such as fans or heat sinks, is working properly and is free from any obstructions. The cooling system is responsible for dissipating the heat generated by the drive.
Reduce the load: If the drive is operating at maximum capacity, it may be generating more heat than it can dissipate. Try reducing the load on the drive to see if this resolves the issue.
Check the drive's ventilation: Ensure that the drive is properly ventilated, with enough space around it to allow for proper air flow. If the drive is enclosed in a cabinet or other enclosure, ensure that there is adequate ventilation in the enclosure.
Check the wiring: Make sure that the wiring to the drive is correct and that there are no loose or damaged connections that could cause excessive heat buildup.
If none of these steps resolves the issue, you may need to contact the manufacturer's technical support for further assistance.
E. OH ERROR overheat pow.mod. The error message "E.OH" indicates an overtemperature of the power module in the drive. This error can only be reset once the interior temperature has fallen by at least 3°C and the drive displays "E.nOH."
There are several causes for this error, including insufficient air flow at the heat sink due to dirt or other obstructions, an ambient temperature that is too high, or a clogged fan. It's important to address these issues to prevent further overheating and potential damage to the power module or other components.
To resolve the issue, you can try the following steps:
- Check the heat sink for any obstructions or buildup of dirt and debris, and clean it if necessary.
- Ensure that the ambient temperature is within the operating range specified for the drive.
- Check the fan and make sure it is functioning properly. Clean or replace the fan if necessary.
By addressing these issues, you can help prevent the E.OH error from occurring and ensure that the drive operates within safe temperature limits.
- KEB Drivers Homepage (2nd hand)
- User Manuals
-----
+ KEB Inverter Error Codes Index
-----
+ Return to Homepage
+ VFD Homepage >
-