Lenze 9300 Servo Controller

An overcurrent (Ia > 2.25 x IN) has occurred in the motor cable, detected by hardware monitoring. This can be caused by a short circuit in the motor cable, excessive capacitive charging current of the motor cable, or acceleration/deceleration times that are too short for the load. It can also indicate a missing mains phase or an encoder wiring issue.

One of the motor phases has made contact with earth, indicating an insulation fault in the motor cable. This condition poses a risk of electrical shock and further equipment damage.

This fault indicates an overload condition during acceleration due to acceleration or deceleration times (C0012, C0013, C0105) that are too short relative to the connected load. The current controller is likely reaching its limits frequently.

This fault occurs due to frequent and excessively long acceleration processes with overcurrent, or continuous overload where the motor current (Imotor) exceeds 1.05 times the rated current (Irx). A device utilization (C0064) exceeding 100% releases a warning for this condition. The drive dimensioning may be insufficient for the application's duty cycle.

This fault is triggered by frequent and excessively long acceleration processes with motor overcurrent, or permanent motor overload where the motor current (Imotor) exceeds the rated motor current (Irmotor). The drive or motor dimensioning may be inadequate for the application's continuous or peak load requirements.

The heatsink temperature has exceeded +90°C (or >85°C as an earlier warning threshold, C0061). This can be caused by ambient temperatures (Tu) above +40°C or +50°C, a dirty heatsink impeding airflow, or an incorrect mounting position preventing adequate ventilation.

A system failure has occurred, likely due to strong interference injection on control cables or ground/earth loops in the wiring. This indicates an electrical noise or grounding issue affecting the controller's stability.

A checksum error has been detected in parameter set 1. This fault can arise from issues during parameter set loading, interruption during transfer via keypad, or incompatibility between stored parameters and the loaded software version.

A checksum error has been detected in parameter set 2. This fault can arise from issues during parameter set loading, interruption during transfer via keypad, or incompatibility between stored parameters and the loaded software version.

An error has occurred in the program flow of the device. This indicates an internal software issue within the controller's operating system, potentially requiring a software analysis by the manufacturer.

An error has occurred in the parameter set, possibly due to an operating system software update. The Lenze default settings (C0003 = 1) are automatically loaded as a result of this fault.

A checksum error has been detected in parameter set 3, indicating a fault during loading or an interruption during transfer via the keypad. This can also occur if saved parameters are incompatible with the loaded software version.

A checksum error has been detected in parameter set 4, indicating a fault during loading or an interruption during transfer via the keypad. This can also occur if saved parameters are incompatible with the loaded software version.

An error was detected during parameter set transfer between two devices, or the parameter set does not match the controller (e.g., higher-power controller data transferred to lower-power). This prevents proper device initialization.

An internal fault related to the controller's memory has been detected. This indicates a critical hardware or firmware issue within the drive itself.

During the controller's initialization phase, an incorrect power stage was detected. This implies a critical internal hardware mismatch or failure within the power electronics.

An error occurred during the motor data identification process. This can be caused by a disconnected motor, excessively high stator resistance, or the controller being externally inhibited during the identification sequence.

An error occurred during motor data identification, indicating the connected motor may be too small for the drive. This can also be caused by an externally inhibited controller during the identification process, preventing proper measurement.

The motor speed has exceeded the maximum limit defined in parameter C0596. This indicates an overspeed condition potentially due to incorrect parameter settings, external load conditions, or control system malfunction.

The DC bus voltage has fallen below the specified threshold, which is determined by parameter C0173. This condition indicates insufficient input power, potentially due to issues with the mains supply or the connection cables.

The DC bus voltage has exceeded the switch-off threshold OU (e.g., 770V for <400V mains with C0173=0) as specified by parameter C0173, indicating excessive braking energy. The pulse inhibit is set, and a delay time (C0912) starts until the voltage falls below the switch-on threshold OU (e.g., 755V for <400V mains).

Monitoring of motor phases (LP1) does not respond to an interrupted motor phase, even if C0597 = 0 or 2, because the MLP1 function block is not entered into the processing table. This means an interrupted motor phase will not be detected.

An overcurrent (OC1) TRIP occurs if, during DC-injection braking (GSB) at high motor speeds, the residual voltage from magnetism and high speed generates an excessive motor current. This happens because the pulse inhibit (DCTRL-IMP) set during braking is too short.

An overcurrent condition (OC5) can be activated if motor phases are reversed, causing the motor's rotating field to mismatch the feedback system's. This leads to the motor drawing high current, potentially up to Imax (C0022), especially with V/f or vector control.

The drive has detected a heatsink overtemperature condition. This is a warning that indicates the heatsink temperature has exceeded its normal operating range, but the drive continues to operate in a controlled manner.

The drive has triggered the PTC monitoring function. This indicates that the Positive Temperature Coefficient (PTC) thermistor, likely in the motor, has exceeded its threshold temperature, signifying an overtemperature condition. The drive continues to operate in a controlled manner.

An overvoltage (OU) TRIP occurs if, during DC-injection braking (GSB) at high motor speeds, the residual voltage from magnetism and high speed generates an excessive motor current. This can lead to overvoltage due to the drive's attempt to reduce magnetization when the pulse inhibit (DCTRL-IMP) is too short.

This is an advance warning indicating frequent and excessively long acceleration processes with motor overcurrent, or permanent motor overload where the motor current (Imotor) exceeds the rated motor current (Irmotor). This condition suggests that the drive or motor dimensioning may be inadequate, and continuous operation without addressing it could lead to an OC6 trip. This warning is managed by parameter C0606.

One of the current-carrying motor phases has failed. This monitoring function is primarily for asynchronous motors and requires the MLP1 function block to be entered in C0465. Possible causes include a faulty motor, a damaged motor cable, or a current limit value (C0599) set too low. The monitoring can be switched off via C0597.

The motor temperature has exceeded the +150°C threshold, detected via resolver or incremental value encoder (e.g., KTY sensor at X8/5, X8/8). This indicates the motor is thermally overloaded due to impermissible continuous current or frequent/long acceleration processes. This monitoring can be switched off via C0583.

The heatsink temperature has exceeded the specific threshold value set in parameter C0122. This is an advance warning for heatsink overheating, which can be caused by high ambient temperatures (Tu > +40°C or +50°C), a dirty heatsink, or an incorrect mounting position. This monitoring can be switched off via C0582.

The motor temperature has exceeded the specific threshold value set in parameter C0121, detected via resolver or incremental value encoder. This indicates the motor is thermally overloaded due to impermissible continuous current or frequent/long acceleration processes. This is an advance warning for motor overheating. This monitoring can be switched off via C0584.

The motor temperature is too high, detected by a PTC or temperature contact connected to terminals T1 and T2. This indicates motor thermal overload due to impermissible continuous current or frequent/long acceleration processes. The fault can also occur if terminals T1 and T2 are not correctly connected to a temperature sensor. This monitoring can be switched off via C0585.

A communication error has occurred on the automation interface (AIF). This indicates a problem with the physical communication link, its configuration, or the communication master. This error is managed by parameter C0126.

A communication error has occurred with the process data input object CAN1_IN. This can be due to issues with the CAN bus, wiring, or incorrect data configuration. The monitoring time for this communication channel can be set with parameter C0357/1.

A communication error has occurred with the process data input object CAN2_IN. This can be due to issues with the CAN bus, wiring, or incorrect data configuration. The monitoring time for this communication channel can be set with parameter C0357/2.

A communication error has occurred with the process data input object CAN3_IN. This can be due to issues with the CAN bus, wiring, or incorrect data configuration. The monitoring time for this communication channel can be set with parameter C0357/3.

The system bus (CAN) has entered a BUS-OFF state due to an excessive number of faulty telegrams. This indicates a severe and persistent communication problem on the CAN network, which is configured via parameter C0595.

The input signal 'Lamp Control' at terminal X9/8 is LOW, indicating an interruption of the digital frequency coupling. If the response (C0587) is set to 'Warning' (2), continued operation without addressing this fault can potentially damage the drive.

The input current at analog input X6/1 or X6/2 has fallen below 2 mA. This monitoring function is only active if parameter C0034 is set to 1, indicating a low current condition on the analog input.

An error has been detected with the thermal sensor connected to the motor inputs X7 or X8. This indicates a malfunction of the sensor itself or an issue with its wiring, preventing accurate motor temperature monitoring. This monitoring is controlled by parameter C0594.

An external monitoring function has triggered this fault, which is activated via DCTRL (Drive Control) and configured through parameter C0581. The 'x' in the code indicates the response type: 0 for TRIP, 1 for message, 2 for warning.

An error has been detected with the thermal sensor responsible for monitoring the heatsink temperature. This indicates a fault with the sensor itself or its wiring, compromising the heatsink temperature monitoring. This monitoring is controlled by parameter C0588.

The internal temperature sensor within the controller is reporting undefined values. This compromises the ability of the drive to monitor and protect itself against overheating conditions.

The maximum system speed (defined by C0596) has been exceeded. This typically occurs due to an excessively high active load, such as in hoist applications, or if the drive is not speed-controlled and torque limits are too low, allowing overspeed.