Kuka KR C2 Robot Controller

54 fault codes documented

105

HO5-Trip

This fault indicates a checksum error within the control unit device set. This implies corruption or inconsistency in the control unit's stored device configuration data, potentially leading to incorrect control functionality or system instability.

106

HO6 trip (Checksum error in the power unit device set)

This fault indicates a checksum error within the power unit device set (KSDs). This implies corruption or inconsistency in the power unit's stored device configuration data, which can lead to incorrect power stage operation or system instability.

11

OC1-Trip (Overcurrent)

This fault indicates an overcurrent condition. For the KPS-600, it specifically signifies an I*t overload of the brake resistor during the charging phase, implying excessive energy dissipation. For KSDs, it means a power unit overcurrent, typically a short-circuit or ground fault detected by hardware monitoring, which is a critical fault risking damage to the power stage.

111

K1-Trip (Main contactor K1 stuck)

This fault indicates that the main contactor K1 is stuck, meaning it has failed to open or close as commanded (KPS-600). This can prevent the system from safely powering up or shutting down, and can lead to continuous power supply to the drive even when disengaged, posing a safety risk.

112

BEA-Trip (Ballast resistor current detection error)

This fault indicates that the optocoupler responsible for detecting current flow through the ballast resistor is signaling no current, even when expected (KPS-600). This suggests a fault in the ballast resistor, its associated circuitry, or the optocoupler itself, preventing proper regenerative energy dissipation.

12

OC2-Trip (Short-circuit, software monitoring)

This fault indicates a short-circuit condition detected by software monitoring in KSDs. This implies an excessive current draw or unintended electrical path, identified by the drive's software algorithms, which can lead to protective shutdown to prevent hardware damage.

121

LV1-Trip (Low voltage supply undervoltage)

This fault indicates an undervoltage condition in the low voltage supply for the KPS-600. This means the control power supply voltage is below the operational threshold, which can affect control unit stability and lead to unexpected shutdowns or erratic behavior.

122

LV2-Trip (Battery undervoltage, U<22 V)

This fault indicates a battery undervoltage condition where the battery voltage has dropped below 22V (KPS-600). This is critical for maintaining volatile memory or providing backup power, and sustained low voltage can lead to data loss or operational issues.

123

LV3-Trip (Battery undervoltage, U<19 V)

This fault indicates a more severe battery undervoltage condition where the battery voltage has dropped below 19V (KPS-600). At this critical level, system functions relying on battery power may become unstable or fail completely, risking data integrity.

124

LV4-Trip (Undervoltage in intermediate circuit while charging, 500 V threshold not reached)

This fault indicates an undervoltage condition in the intermediate DC bus circuit during charging, specifically failing to reach the 500V threshold (KPS-600). This suggests an issue with the incoming mains supply or the rectifier section, preventing the DC bus from charging adequately for operation.

131

OV1-Trip (Overvoltage in intermediate circuit while charging)

This fault indicates an overvoltage condition in the intermediate DC bus circuit during the charging phase (KPS-600). This can be caused by excessive input voltage or issues with the charging circuit, risking damage to power components if the voltage exceeds safe limits.

132

OV2-Trip (Overvoltage in intermediate circuit during operation)

This fault indicates an overvoltage condition in the intermediate DC bus circuit during normal operation (KPS-600). This often occurs due to regenerative energy from the motor not being absorbed or dissipated by the braking resistor, causing the DC bus voltage to rise above safe limits and risking damage to the drive's power stage.

141

BR1-Trip (Brake error, main axes)

This fault indicates an error in the brake system for the main axes (KPS-600). This could be due to a faulty brake component, incorrect brake control signals, or issues with the brake power supply, potentially compromising safety and the ability to hold the main axes.

142

BR2-Trip (Brake error, external axes)

This fault indicates an error in the brake system for the external axes (KPS-600). Similar to main axes, this could be caused by a faulty brake component, incorrect control signals, or power issues, affecting the ability to hold external loads safely and reliably.

15

OC5-Trip (I*t Overload)

This fault indicates an I*t overload condition. For the KPS-600, it specifically refers to an overload of the brake resistor during operation, suggesting prolonged or heavy braking cycles. For KSDs, it indicates a general I*t overload, meaning the thermal capacity of a component (likely the motor or drive's power stage) has been exceeded over time, risking damage.

32

LP1-Trip (Phase Failure)

This fault indicates a phase failure. For the KPS-600, it specifically refers to a mains phase failure, meaning an issue with the incoming AC power supply. For KSDs, it indicates a motor phase failure, meaning one or more phases supplying the motor are missing or unbalanced. Both conditions prevent proper operation and lead to drive shutdown.

50

OH-Trip (Overtemperature, heat sink)

This fault indicates an overtemperature condition detected at the heat sink of the device. This implies insufficient heat dissipation, potentially due to blocked airflow, a faulty cooling fan, or excessive ambient temperature, which can lead to thermal shutdown and component damage.

52

OH2-Trip (Overtemperature, interior)

This fault indicates an overtemperature condition detected within the interior of the device. This suggests a general rise in internal temperature, possibly due to a faulty internal component, inadequate cabinet cooling, or high ambient temperatures, posing a risk of component degradation or failure.

65

CE4-Trip (Drive bus communication errors exceeded)

This fault indicates that the maximum permissible number of communication errors with the drive bus has been exceeded. For KSDs, this also includes too many toggle bit errors in succession. This severe communication breakdown leads to short-circuit braking, signifying a loss of reliable control and data exchange with the drive bus.

71

CCr-Trip

This fault signifies a crash of the internal microcontroller for either the KPS-600 or KSD device. This is a severe error indicating an unexpected software or hardware failure within the control unit, leading to a loss of control and operation.

72

Pr1-Trip

This fault indicates a checksum error within parameter set 1 for either the KPS-600 or KSD device. This means the stored configuration data for parameter set 1 is corrupted or inconsistent, which can affect drive operation and lead to unpredictable behavior or prevent startup.

79

Pr5-Trip (Communication error with EEPROM in control unit)

This fault indicates a communication error with the EEPROM (Electrically Erasable Programmable Read-Only Memory) located in the control unit, affecting both KPS-600 and KSD devices. This can lead to issues saving or retrieving critical operational data and parameters, potentially causing incorrect device behavior or preventing startup.

80

PR6-Trip (Communication error with EEPROM in the power unit)

This fault indicates a communication error with the EEPROM (Electrically Erasable Programmable Read-Only Memory) located in the power unit (KSDs). This prevents the power unit from correctly storing or retrieving its specific configuration and operational data, potentially affecting power stage control and overall drive functionality.

91

EEr-Trip (External error, short-circuit braking requested by controller)

This fault indicates an external error that has triggered a request for short-circuit braking from the controller (KSDs). This means a fault condition outside the drive itself has been detected by the controller, leading it to initiate an emergency stop, highlighting a safety or process-critical issue that requires external investigation.

Ballast switch energized for too long PMx

KPS Ballast Switch Overload During Operation

The brake resistor experienced an I²t overload during operation. This indicates that the ballast switch was energized for an excessive duration. Possible causes include a defective or incorrectly connected ballast resistor, or deceleration phases in the robot program that are too long.

Ballast switch energized for too long PMx during charging

KPS Ballast Switch Overload During Charging

The brake resistor experienced an I²t overload during the charging phase. This indicates that the ballast switch was energized for an excessive duration, possibly due to a defective ballast resistor or incorrect connection.

Brake error Ax/PMx channel x

External Axes Brake Error

A brake error has occurred on the external axes, specified by channel x. This could be due to the brakes not being connected or a short-circuit present on the brake cable.

Buffer battery voltage low

Buffer Battery Undervoltage (U<22V)

The buffer battery voltage has dropped below 22V, indicating an undervoltage condition. This requires attention to maintain system integrity and prevent data loss.

Cabinet temperature too high PMx

KPS Interior Overtemperature

An overtemperature condition has been detected inside the KPS module (PMx). This indicates that the cabinet ventilation is not functioning correctly, leading to an elevated interior temperature affecting the KPS.

Check battery PMx

KPS Buffer Battery Undervoltage (U<19V)

The buffer battery voltage for the KPS module (PMx) has dropped critically low, below 19V, indicating a severe undervoltage condition that likely requires battery replacement.

DRIVES ERROR Ax No.: TRIP

KSD Fault State (Emergency Stop)

The servo drive module (KSD) for the specified axis (Ax) has entered a fault state, causing the robot to perform an Emergency Stop. Further detailed error messages are usually displayed in conjunction with this general fault.

Drives error Ax no.: 105

KSD Control Unit Device Set Checksum Error

A checksum error has occurred in the control unit device set of the servo drive module for the specified axis (Ax). This indicates data corruption in the control unit's configuration.

Drives error Ax no.: 106

KSD Power Unit Device Set Checksum Error

A checksum error has occurred in the power unit device set of the servo drive module for the specified axis (Ax). This indicates data corruption in the power unit's configuration.

Drives error Ax no.: 71

KSD Microcontroller Crash

The microcontroller within the servo drive module for the specified axis (Ax) has crashed. This indicates an internal hardware or firmware malfunction of the KSD.

Drives error Ax no.: 79

KSD EEPROM Communication Error (Control Unit)

A communication error has occurred with the EEPROM in the control unit of the servo drive module for the specified axis (Ax). This suggests an issue with data storage or retrieval within the KSD's control unit.

Drives error Ax no.: 80

KSD EEPROM Communication Error (Power Unit)

A communication error has occurred with the EEPROM in the power unit of the servo drive module for the specified axis (Ax). This suggests an issue with data storage or retrieval within the KSD's power unit.

Drives error PMx no.: 71

KPS Microcontroller Crash

The microcontroller within the KPS module (PMx) has crashed. This indicates an internal hardware or firmware malfunction of the KPS.

Drives error PMx no.: 79

KPS EEPROM Communication Error (Control Unit)

A communication error has occurred with the EEPROM in the control unit of the KPS module (PMx). This suggests an issue with data storage or retrieval within the KPS control unit.

FAILURE OF MOTOR PHASE Ax

Motor Phase Failure

A failure has been detected in one of the motor phases for the specified axis (Ax). This typically indicates an open circuit, loose connection, or an imbalance in the motor's power supply.

HEAT SINK TEMPERATURE Ax

Axis Heat Sink Overtemperature

An overtemperature condition has been detected on the heat sink of the servo drive module for the specified axis (Ax). This indicates inadequate cooling or excessive load on the axis.

Heat sink temperature PMx

KPS Heat Sink Overtemperature

An overtemperature condition has been detected on the heat sink of the KPS module (PMx). This indicates that the cabinet ventilation is not functioning correctly, leading to inadequate cooling of the KPS.

Intermediate circuit charging circuit defective PMx

KPS Intermediate Circuit Charging Circuit Defective

The optocoupler responsible for ballast resistor current detection signals that no current is flowing through the ballast resistor, even during charging. This indicates a defect in the intermediate circuit charging circuit of the KPS module (PMx).

K1 contactor welded PMx

KPS Main Contactor K1 Stuck

The main contactor K1 in the KPS module (PMx) is stuck (welded) in either a closed or open position. This prevents proper control of power flow to the drive system.

MOTOR CABLE Ax

Motor Cable Fault

This error indicates a power unit overcurrent due to a short-circuit or ground fault, detected by hardware monitoring. It can also signify a ground fault detected by software monitoring, affecting the motor cable or motor itself.

OVERCURRENT Ax

Axis Overcurrent

This fault indicates an overcurrent condition on the specified axis (Ax). Possible causes include overloading of the axis or an I²t overload. A defective KSD module could also be the root cause.

Overvoltage PMx

KPS Intermediate Circuit Overvoltage During Operation

An overvoltage condition has been detected in the intermediate circuit of the KPS module (PMx) during operation. This can be caused by excessively high mains voltage or a defective ballast switch not dissipating regenerative energy.

Overvoltage PMx during charging

KPS Intermediate Circuit Overvoltage During Charging

An overvoltage condition has been detected in the intermediate circuit of the KPS module (PMx) during its charging phase. This is typically caused by a mains voltage that is too high.

Parameter error Ax PR1

KSD Parameter Set 1 Checksum Error

A checksum error has occurred in parameter set 1 of the servo drive module for the specified axis (Ax). This indicates data corruption within the parameter configuration of the KSD.

Parameter error PMx Control

KPS Control Unit Device Set Checksum Error

A checksum error has occurred in the control unit device set of the KPS module (PMx). This indicates data corruption in the KPS control unit's configuration.

Parameter error PMx checksum

KPS Parameter Set Checksum Error

A checksum error has occurred in parameter set 1 of the KPS module (PMx). This indicates data corruption within the KPS parameter configuration.

SYNCHRONISATION ERROR DRIVE MODULE Ax

Servo Bus Communication Error

The maximum permissible number of communication errors with the servo bus for the specified axis (Ax) has been exceeded. Too many consecutive toggle bit errors are a common cause, leading to short-circuit braking.

Undervoltage PMx

KPS Low-Voltage Supply Undervoltage

The low-voltage supply for the KPS module (PMx) is experiencing an undervoltage condition. The rated voltage for this supply is 27.1 V.

Undervoltage PMx during charging

KPS Intermediate Circuit Undervoltage During Charging

The intermediate circuit of the KPS module (PMx) did not reach the 500 V threshold during charging, indicating an undervoltage condition. This is typically caused by a mains voltage that is too low.

Watchdog power module PMx

KPS Watchdog Error (Servo Bus Communication)

The maximum permissible number of communication errors with the servo bus has been exceeded by the KPS power module (PMx). This watchdog error causes short-circuit braking.