Kuka KR C4 Controller
21 fault codes documented
Internal error, KPP/KSP (axis)
This fault indicates that the KPP or KSP device has detected an internal error within its components. This implies a malfunction that can affect drive functionality and may require further investigation or replacement.
IxT overload error, KPP/KSP (axis)
This fault indicates that an axis connected to a KPP/KSP drive is experiencing an IxT overload, meaning the mean continuous current is too high or the axis is excessively loaded. This can lead to overheating and potential damage to the motor or drive if not addressed.
Ground fault, KPP/KSP (axis)
This fault indicates a power unit overcurrent due to a ground fault in the motor or motor cable connected to a KPP/KSP drive. A ground fault poses a significant safety risk and can cause severe damage to electrical components.
Overcurrent, KPP/KSP (axis)
This fault signifies a brief overcurrent condition that exceeds the maximum current capacity of the KPP drive. This is typically caused by a short-circuit, leading to immediate drive protection actions.
Heat sink temperature too high, KPP/KSP (axis)
This fault indicates an overtemperature condition on the heat sink of a KPP or KSP drive unit for an axis. Prolonged high temperatures can degrade component lifespan and lead to drive shutdown.
Motor phase failure, KPP/KSP (axis)
This fault signals a failure in one or more motor phases connected to the KPP or KSP drive. This typically indicates an open circuit or imbalance in the motor's electrical connection or windings, which can lead to motor malfunction or damage.
Communication error, KPP/KSP (axis)
This fault indicates a communication error on the controller bus, specifically affecting the KPP or KSP drive unit. This prevents the controller from sending commands or receiving feedback from the drive, leading to axis control failure.
Unknown status flag received, KPP/KSP (axis)
This fault signifies a software error within the EtherCat master, resulting in the reception of an unknown status flag from a KPP or KSP drive. This indicates a low-level protocol issue that the system cannot interpret, potentially leading to unpredictable behavior.
Hardware fault, KPP/KSP (axis)
This fault indicates that a KPP or KSP device has detected an internal hardware fault. This is a critical error signifying a malfunction within the drive's internal components, which typically requires replacement.
Mains phase failure, KPP/KSP (axis)
This fault indicates a failure or loss of one or more mains input phases to the KPP or KSP drive. This prevents the drive from receiving adequate power, leading to system shutdown or impaired operation.
Power supply failure, KPP/KSP (axis)
This fault indicates that the supply voltage to the KPP/KSP drive has dropped below 300 V. Insufficient supply voltage can lead to unstable drive operation, undervoltage faults, and system shutdowns.
Overvoltage during charging, KPP/KSP (axis)
This fault occurs when an overvoltage condition is detected during the charging phase of the KPP/KSP drive. This can be caused by an excessively high mains voltage or an insufficient number of connected capacitors, posing a risk to sensitive components.
Fault in brake resistor, KPP/KSP (axis)
This fault indicates that the KPP drive has detected an error within the ballast (brake) circuit. This can compromise the drive's ability to dissipate regenerative energy, potentially leading to overvoltage conditions or drive damage.
Ballast circuit overload, KPP/KSP (axis)
This fault occurs when the braking energy dissipated by the ballast circuit is permanently too high. This indicates an excessive amount of regenerative energy, potentially causing the ballast resistor to overheat and fail if not addressed.
IxT overload error, KPP/KSP (axis)
This error indicates an axis overloaded condition, where the mean continuous current is too high. It can occur during start-up due to excessive load in the program or during operation due to system modifications or temperature influences.
Ground fault, KPP/KSP (axis)
This fault indicates a power unit overcurrent condition specifically due to a ground fault on an axis. It points to an insulation breakdown or unintended conductive path to ground in the motor or its cabling, leading to excessive current flow.
Overcurrent, KPP/KSP (axis)
This fault signifies a brief overcurrent event that exceeds the maximum current capacity of the KPP. Such events are typically caused by short-circuits or sudden, excessive load demands, indicating an electrical issue or severe mechanical binding.
Intermediate circuit voltage too high, KPP/KSP (axis)
This fault occurs when the DC link voltage in the intermediate circuit rises above its specified operating limit during operation. This often results from regenerative energy feedback into the DC bus during braking, or an issue with the mains supply voltage.
Intermediate circuit voltage too low, KPP/KSP (axis)
This fault indicates that the DC link voltage in the intermediate circuit has dropped below its minimum operating threshold during operation. This is typically caused by insufficient incoming mains supply, issues with the DC link cabling, or a problem with the internal charging circuit.
Intermediate circuit charging failed, KPP/KSP (axis)
This fault indicates a failure in the charging process of the intermediate circuit within the KPP/KSP drive. This prevents the DC link from reaching its nominal voltage, disabling the power stage and preventing motor operation.
Collective brake fault, KPP/KSP (axis)
This fault is signaled by the brake cable monitoring device, indicating a short-circuit, overloading, or a break in the brake connection affecting all axes. This is a critical safety fault, as it affects the ability to hold the robot axes.