Siemens SINAMICS G120

This alarm indicates that one phase of the inverter's output is disconnected, suggesting a break in the power path to the motor. This condition can lead to motor malfunction, reduced performance, or potential damage if operated under unbalanced conditions.

A large ripple in the DC-link voltage has been detected, which can indicate issues with the input power supply, filter capacitors, or excessive harmonic distortion. This condition can affect inverter performance, efficiency, and potentially lead to premature component failure.

This alarm signifies that the braking resistor is overloaded due to excessive braking energy, or the installed resistor's rating is insufficient for the application's demands. Continuous overload can damage the resistor, its associated circuitry, or the drive itself if heat dissipation limits are exceeded.

This alarm indicates that the motor data identification process (parameter P1910) is active or has been selected to run. This is a normal operational state during commissioning or motor tuning, where the drive is learning the motor's electrical characteristics.

This alarm indicates that the speed control optimization process (parameter P1960) is active or has been selected to run. This is a normal state when the drive is fine-tuning its speed control parameters to achieve optimal performance and responsiveness.

This alarm signifies that the actual motor speed has either exceeded its maximum limit or deviates significantly from the setpoint, as indicated by status bits r2197.12 or r2197.7. This often points to an excessive motoring or regenerative load on the drive, or poor tuning of the speed controller.

This alarm occurs when an MMC-PS (Multi Media Card) is inserted into the drive while it is operating, especially if no card was present at startup. This action can potentially corrupt the drive's current parameter dataset upon the next power cycle if automatic cloning at startup is enabled, leading to incorrect drive configuration.

This warning indicates a loss of signal from the motor encoder, potentially causing the inverter to switch to sensorless vector control. Causes range from physical disconnection or faulty encoder hardware to incorrect parameterization where an encoder is expected but not configured or selected, leading to imprecise speed or position control.

This warning indicates an internal time slice overrun within the drive's Real-Time Operating System (RTOS). This typically points to an internal processing delay, excessive computational load, or a software anomaly that could affect system stability and performance.

This alarm indicates an issue with the PROFIBUS communication, specifically that an incorrect parameter or configuration telegram was received. This prevents the drive from being properly controlled or configured via the bus, leading to communication failure with the master.

This alarm signals an error within the PROFIBUS double word reference table, which is critical for data exchange. This typically indicates a corruption or inconsistency in how PROFIBUS data is mapped within the drive, potentially leading to incorrect data interpretation.

The drive has experienced a PROFIBUS communication timeout, specifically indicating that no actual data is being received from the Control Unit Processor (CUP). This can lead to a loss of real-time operational data, affecting monitoring and control if not addressed promptly, potentially halting automated processes.

A fatal software error has occurred within the PROFIBUS communication module, potentially related to hardware checks, general communication issues, or problems with the V1SL stack. This critical error can lead to a complete loss of PROFIBUS connectivity and drive control, rendering the system inoperable via PROFIBUS.

The PROFIBUS address configured for the drive is incorrect at startup, either due to an improper DIP switch setting or an incorrect value in parameter P0918. This prevents the drive from communicating correctly on the PROFIBUS network, leading to a loss of control from the PROFIBUS master.

Communication has been lost with the Communication Board (CB) within the drive. This indicates a potential hardware fault with the CB or its connection, preventing proper data exchange and potentially disrupting external communication protocols, leading to a loss of control or monitoring capabilities.

The Communication Board (CB) has reported an internal configuration error. This suggests that the parameters or settings for the CB are incorrect or inconsistent, preventing it from functioning as intended and disrupting communication capabilities, hindering proper integration into the control system.

The DC-link maximum voltage controller has been deactivated. This typically happens if the main supply voltage is consistently too high, if the motor is regenerating power back to the drive due to an active load, or during deceleration with high inertial loads. This can lead to excessive DC link voltage and potential damage to the drive components if not managed.

This alarm indicates that the settings transferred to the inverter are not compatible with the device. This commonly occurs during maintenance after component replacement or firmware updates when configuration data is loaded from an Operator Panel. Continuing operation with incompatible settings can lead to unexpected behavior or failure of the drive.

The parameterization of the motor holding brake or Safe Brake Control (SBC) contains an illogical or contradictory configuration, such as p1215 = 0 or 3 while p9602 = 1. This prevents correct and safe brake operation, potentially leading to unintended motor movement.

The PROFIsafe configuration in the higher-level control differs from that in the drive. This inconsistency can lead to communication errors or safety function issues, preventing reliable and safe operation. Specific alarm values (r2124=1 or r2124=2) provide more detail.

The combination of the motor and power unit is unsuitable, specifically if the ratio between the rated power unit current (r0207[0]) and rated motor current (p0305) is not greater than 5. This mismatch can lead to sporadic C01711 or C30711 messages and suboptimal performance or even damage over time.

The set time (p9661) for monitoring the forced checking procedure (test stop) for the 'STO via Power Module terminals' function has been exceeded. This indicates an overdue safety test that must be performed to maintain the integrity of the Safe Torque Off function.

A safety-related parameter has been modified either during safety commissioning or a safety reset. This warning is issued to ensure that all safety changes are intentionally acknowledged and finalized, as unresolved changes can prevent the drive from entering a safe operational state, potentially compromising machine safety.

An inconsistency has been detected in the safety input signals, specifically related to the Safe Limited Speed (SLS) function. The drive will initiate a controlled deceleration (SS1) and eventually enter a Safe Torque Off (STO) state, issuing a fault due to the potential compromise of safety integrity.

The motor speed has exceeded the configured Safe Limited Speed (SLS) threshold, either upon entering SLS or exceeding its tolerance. This triggers a controlled deceleration (SS1), followed by a Safe Torque Off (STO) and a drive fault, indicating a potential safety violation due to excessive speed that could lead to injury or damage.

The forced checking procedure (test stop) for extended motion functions was inadvertently selected during power-up, which is not permissible. This prevents normal startup and indicates a configuration error during initialization of safety functions.

A semaphore problem occurred during startup, preventing the drive from loading its last saved safety parameters and forcing it to load default values instead. This indicates a data integrity issue or timing problem, compromising the intended safety configuration and requiring immediate attention to restore safe operation.

The system is currently in commissioning mode. This is a normal state during initial setup or configuration, allowing special access and diagnostics. No fault is present, but it indicates the system is not in regular operation.

The time set in p9659 for the forced checking procedure (test stop) for the basic safety functions (STO) has been exceeded. This indicates an overdue safety test, which must be performed to ensure the reliability of the Safe Torque Off function.

The inverter's automatic self-test during power-up was interrupted because the 'STO via Power Module terminals' function is active. This prevents the drive from completing its initialization and starting normally, indicating an unintended or misconfigured safety state at startup.

The system is actively waiting for communication, likely with the F host. This alarm indicates a potential disruption or delay in the communication link, preventing the inverter from receiving necessary commands or operational data from the host controller.

A forced checking procedure (test stop) for the fail-safe digital output is currently in progress. This is a normal safety test to verify the output's functionality and indicates that the system is performing a self-check.

The system is waiting for the Safe Torque Off (STO) function of the extended safety functions to be deselected via Safety Monitor Module (SMM) as part of an automatic test stop procedure. This can also indicate active safety messages preventing STO deselection.

A STOP A command has been initiated, typically as a consequence of another primary safety-related event such as C01701, C01706, C01714, or C01716 (or their C307xx equivalents). This action results in an uncontrolled stop by immediately removing power from the motor.

A STOP B command has been initiated, usually as a consequence of another primary safety-related event like C01706, C01714, or C01716 (or their C307xx equivalents). This action brings the drive to a controlled stop via a defined deceleration ramp.

The limit for Safe Acceleration Monitoring (SAM) or Safe Brake Ramp (SBR) has been exceeded. This indicates that the motor braking response is not within the parameterized tolerance, posing a risk of uncontrolled deceleration and potential mechanical damage or safety hazard.

This alarm signifies a defect within a safety monitoring channel, detailed by r2124 fault values. Causes include data cross-check errors between processors (0-2, 4-43, 58-999), difference in position actual value exceeding tolerance (p9542), differing monitoring function tolerance values (44-57), or an expired watchdog timer (1000) due to frequent F-DI signal changes. Initialization errors (1001), test stop issues (1005, 1011), cyclic communication failure (1020), or low current for encoderless acquisition (1041) can also trigger this alarm.

This alarm indicates a defect occurring during the processing of Fail-safe I/O (F-IO). This suggests a problem with the safety-related input/output circuitry or its configuration, potentially compromising safety functions if not addressed.

The inverter is currently performing a forced checking procedure (test stop) for its extended motion monitoring functions. This is a normal operational state during a safety test and indicates that the system is validating its safety capabilities.

The acceptance test mode is currently active, indicating that safety functions are being validated. This is a normal state during commissioning or re-validation of safety parameters and functions.

A defect has been detected in a monitoring channel, with fault value r2124 providing more detailed information. This condition often initiates a STOP response and an inverter fault, indicating a critical issue with the safety monitoring system that requires immediate attention.

A defect has occurred during the processing of fail-safe inputs/outputs (F-IO), potentially due to incorrect wiring or parameter settings. This can compromise the integrity of safety-related I/O signals, leading to unpredictable safety reactions or system failures.

The Safely Limited Speed (SLS) has been exceeded, meaning the motor is moving faster than the configured safe speed limit. This indicates a failure in speed monitoring or an incorrect speed setpoint from the higher-level control, posing a significant safety risk.

The tolerance for the 'Safe Direction of Motion' (SDI) function has been exceeded. This indicates that the motor is moving in an unintended or unsafe direction, or its deviation from the intended direction is too great, posing a safety risk if not immediately addressed.

A discrepancy error has been detected in either the fail-safe digital inputs or outputs, indicating inconsistent signals or faulty wiring. This compromises the reliability of safety-related I/O, potentially leading to incorrect safety reactions.

The motor temperature sensor has an open or short circuit, causing a loss of its signal. This results in the drive's temperature monitoring switching to a thermal model instead of direct sensor input, which can lead to inaccurate temperature protection if the underlying issue is not resolved. Continuous operation with a faulty sensor could lead to motor overheating and damage.

One or more of the three-phase AC input power lines to the drive is disconnected or has failed while the drive is enabled and under load. This can lead to unbalanced operation, component stress, and potential damage to the inverter or motor if not corrected, causing reduced performance and premature equipment failure.

An earth fault has been detected, indicating an insulation breakdown where current is flowing to ground. This occurs when the sum of the phase currents exceeds 5% of the inverter's nominal current, potentially causing personnel hazard, equipment damage, or fire if left unresolved.

A critical hardware fault has occurred within the inverter's power stack, likely due to a short circuit in an IGBT or the chopper circuit, leading to excessive DC-link current. This indicates severe internal damage to the inverter power components and requires replacement to prevent further system failure and potential safety risks.

One of the inverter's output phases to the motor is disconnected or open-circuited. This causes unbalanced current flow to the motor, leading to excessive motor heating, reduced torque, and potential damage to both the motor and the inverter if operation continues.

Significant voltage ripple has been detected on the DC link of the inverter. This can be caused by issues with the input power supply, damaged DC link capacitors, or an internal power circuit problem. Large ripples lead to unstable operation and potential damage to the inverter's power components, risking system failure.

The gate driver, which controls the inverter's power transistors (IGBTs), is not enabled. This critical internal fault prevents the inverter from generating output voltage and can be indicative of a hardware issue with the gate drive board or a synchronization problem within the safety state machines. This renders the drive inoperable.

A read or write failure occurred in the EEPROM of the Basic Operator Panel (BOP) during parameter cloning or saving. This could be due to a faulty BOP, an EEPROM that is too small for the stored parameters, or an incompatibility, leading to an inability to store or retrieve non-volatile parameters essential for drive configuration.

An attempt was made to initiate a parameter cloning operation without a Basic Operator Panel (BOP) being physically connected to the drive. This prevents the cloning process from starting, as the BOP is required for this function, meaning parameters cannot be loaded or saved via this method.

The Basic Operator Panel (BOP) is either empty (no parameters stored) or contains invalid data, causing a failure during parameter cloning. This prevents the drive from being configured correctly using the BOP, potentially leading to incorrect operation or startup issues.

An attempt was made to clone parameters using a Basic Operator Panel (BOP) that contains parameters created on a different type of drive. This incompatibility prevents successful parameter transfer, as the configurations are not designed for the current drive, leading to configuration errors.

An internal communication failure between the inverter's power module and control unit has occurred, indicated by an ASIC timeout. This can be caused by loose connections, electromagnetic interference (EMC), or a faulty internal component, leading to a loss of control and drive shutdown, impacting operational reliability.

The parameter cloning process using the MMC-PS (Memory Card Parameter Save) has failed due to various reasons, including an incorrectly formatted or missing MMC-PS, an inability to write to the MMC, or a corrupted cloning file. This prevents successful transfer of drive parameters, impacting drive configuration and operation.

The parameter cloning file on the MMC-PS exists but its contents are corrupt or invalid, specifically affecting the control word data. This prevents the drive from correctly loading parameters, potentially leading to incorrect operation or failure to start due to an invalid configuration.

The parameter cloning file found on the MMC-PS is from an incompatible drive type. Although the file exists, its parameters cannot be applied to the current drive, preventing proper configuration and startup due to a mismatch in hardware or firmware versions.

The drive attempted to perform an automatic parameter clone during startup but failed because the `Clone00.bin` file was not found in the `/USER/SINAMICS/DATA` directory on the MMC. This prevents automatic configuration, requiring manual intervention to either provide the file or disable the cloning function.

The drive is not receiving setpoint values from the PLC (Programmable Logic Controller) within the configured telegram off time. This indicates a communication issue or incorrect timing, causing the drive to lose its command reference and cease controlled operation, impacting automation sequences.

The drive has failed to receive setpoint values via the USS (Universal Serial Interface) communication protocol within the configured telegram off time. This suggests a problem with the USS master device or the communication settings, causing the drive to lose its operational commands and halt controlled operation.

The drive has failed to receive setpoint values via the USS (Universal Serial Interface) communication protocol within the configured telegram off time. This suggests a problem with the USS master device or the communication settings, causing the drive to lose its operational commands and halt controlled operation.

The drive is not receiving setpoint values from the Control Panel within the specified telegram off time. This indicates a communication issue or incorrect timing between the control panel and the drive, causing a loss of command signals and controlled operation, thus preventing manual control.

An external fault has been triggered, typically through a command input such as control word 2, bit 13. This indicates an issue originating outside the drive itself, requiring investigation of the external control logic or connected devices that are signaling the fault, which can stop the drive unexpectedly.

The drive has lost feedback from the encoder, which is critical for precise speed and position control. This can be caused by physical disconnections, a faulty encoder, incorrect parameter settings (like p0400 or p1300), or the encoder signal being outside expected limits, leading to uncontrolled motor operation or a complete shutdown.

A watchdog timer reset has occurred, indicating a critical software error within the drive's control unit. This signifies that the software has become unresponsive or entered an unexpected state, leading to a system reset and potential loss of control over the connected motor.

A stack overflow error has occurred, indicating a severe software fault or processor failure within the drive's control unit. This is a critical internal error where memory allocated for program execution has been exhausted, leading to system instability or crash and making the drive inoperable.

The feedback signal for the PID controller has dropped below its configured minimum threshold (p2268). This indicates an issue with the feedback sensor, its wiring, or an incorrect parameter setting, causing the PID loop to lose its reference and potentially leading to unstable control or undershoot.

The feedback signal for the PID controller has exceeded its configured maximum threshold (p2267). This indicates an issue with the feedback sensor, its wiring, or an incorrect parameter setting, causing the PID loop to lose its reference and potentially leading to unstable or overdriven control.

The drive failed to validate its configuration vector (SZL vector) during startup, indicating a mismatch between the programmed configuration and the actual hardware, or an internal data integrity issue. This critical fault prevents the drive from starting and operating, potentially due to incorrect power modules or IO boards.

A STOP A request has been initiated, often due to a safety-related event such as defective hardware, incorrect STO configuration, or a discrepancy at STO terminals. This condition is indicated by fault value r0949 and results in an immediate, uncontrolled cessation of motor power. It is a critical fault impacting machine safety and operation.

An inconsistency has been detected in the EEPROM data, particularly related to safety parameters. This means the critical safety configuration was not written correctly to persistent memory, which can compromise the drive's safety functions and prevent safe operation, potentially leading to unsafe machine behavior.

This fault indicates an issue within one of the inverter's safety monitoring channels. Fault value r0949 provides more specific details, ranging from a stop request, data cross-check errors between processors 1 and 2 (1-999), an expired check timer (1000) often due to a signal for a safety function changing too frequently, status discrepancies for STO (2000, 2003) or SS1 (2002), or internal software faults (6000). Unresolved, this fault compromises the integrity of safety functions.

The drive's internal hardware (safety or non-safety related) could not be correctly identified during startup or runtime. This indicates a mismatch between the expected and detected hardware configuration or a fundamental issue with processor communication, preventing the drive from operating safely.

The drive has detected that the motor's operating frequency has exceeded the configured maximum limit, as monitored by one or both internal processors. This can occur due to an application anomaly, incorrect parameterization of speed limits, or an issue with the safety monitoring system, potentially leading to overspeed and mechanical damage.

An error has occurred with the safety data's sign-of-life signal, indicating a potential communication or integrity issue within the safety functions. This can be caused by EMC disturbances or an inadmissible voltage at a Control Unit digital output. Such an error critically impacts the system's ability to maintain safe operation.

The motor holding brake control is malfunctioning, posing a risk of uncontrolled motor movement. This can stem from an incorrect p1278 setting, disconnected or interrupted brake cables, a ground fault, or a short-circuit in the brake winding. A fault in the Safe Brake Relay, Control Unit, or Power Module could also be the cause.

The system has detected that a component has been replaced, requiring acknowledgment and data saving to integrate the new part and ensure consistent operation. Failure to perform these steps can prevent proper functionality and lead to an inconsistent safety state.

This fault is part of a group (F01641, F01650, F01680, F30680) that is expected to occur temporarily during specific corrective maintenance procedures, such as replacing a Control Unit or the entire inverter. It does not indicate a persistent problem if the full replacement and recommissioning steps are followed. The risk is negligible if acknowledged as part of the procedure.

An unexpected internal software error has occurred within the Control Unit, which can lead to unstable operation or system failure. If not resolved, it may indicate a hardware defect, compromising the drive's reliability.

This fault is part of a group (F01641, F01650, F01680, F30680) that is expected to occur temporarily during specific corrective maintenance procedures, such as replacing a Control Unit or the entire inverter. It does not indicate a persistent problem if the full replacement and recommissioning steps are followed. The risk is negligible if acknowledged as part of the procedure.

Synchronization of safety time slices within the Control Unit was unsuccessful, which can prevent proper and safe operation of the drive. This might indicate a transient issue or a deeper problem with the unit's internal timing or processing, affecting safety integrity.

There is an error in the PROFIBUS or PROFINET configuration of the safety slot, either on the master side or the Control Unit. This prevents safe communication with the higher-level controller and can lead to system shutdown, compromising integrated safety functions.

There's an issue with the alignment or operation of the monitoring functions, possibly due to EMC issues or a transient state. This can compromise the reliability of safety monitoring and lead to incorrect safety reactions or false alarms.

Parameter processor 2 is reporting an incorrect state or value, which could affect safety function processing. This can prevent proper configuration and operation of safety features, potentially leading to an unsafe state or system malfunction.

The PROFIsafe telegram number configured in p60022 is not suitable for the enabled safety functions. This indicates an inconsistency in PROFIsafe communication setup, which can prevent safe data exchange and lead to safety function failures.

A parameter write task was rejected, likely due to incorrect security settings or an attempt to modify safety parameters while safety functions are active. This prevents configuration changes, potentially leaving the system in an unconfigured or unsafe state.

The currently installed Power Module does not support the enabled safety functions. This hardware incompatibility prevents the safety functions from operating correctly and safely, requiring a hardware change.

The simulation mode for the digital inputs of the Control Unit (F-DI) is currently active. Safety functions cannot operate reliably while in simulation mode, which could mask actual input conditions and lead to unsafe operation if not deactivated before live use.

An internal communication error has occurred within the Control Unit. This indicates a disruption in data exchange between internal components, which can lead to unpredictable behavior or system shutdown, compromising operational stability and safety.

The attempt to copy Safety Integrated (SI) parameters was rejected. This can happen if p9700 is not 0, or if safety functions (p9501, p9601) are active, preventing critical parameter changes. This can lead to an inconsistent or un-saved configuration, especially after modifying safety settings.

The inverter has detected a critical internal defect, which could be a hardware failure, persistent software issue within the Control Unit, or an unconfigured 'STO via Power Module terminals' with active terminals. This compromises system integrity and requires immediate attention to prevent operational failure.

A static '1' signal is present at the F-DI input designated for safe acknowledgment of safety functions. This indicates an incorrect input state, preventing proper acknowledgment or causing a fault, which can stop operations or prevent safety functions from being reset.

This fault is part of a group (F01641, F01650, F01680, F30680) that is expected to occur temporarily during specific corrective maintenance procedures, such as replacing a Control Unit or the entire inverter. It does not indicate a persistent problem if the full replacement and recommissioning steps are followed. The risk is negligible if acknowledged as part of the procedure.

An incorrect or invalid parameter value has been detected. The fault value (r0949) provides additional information about the specific parameter affected, which needs to be corrected for proper operation. An incorrect parameter can lead to misconfigured safety functions or drive behavior.

A configured monitoring function is not supported by the current hardware or software version. This indicates a mismatch between desired functionality and system capabilities, preventing the function from operating correctly or safely.

The Safely Limited Speed (SLS) function is not enabled, even though it's required or configured for the application. This prevents the system from limiting speed safely, potentially leading to hazardous overspeed conditions if the drive operates outside its safe limits.

A problem has occurred during data backup to the Non-Volatile RAM (NVRAM), potentially leading to loss of configuration data if power is removed. This indicates a critical memory or hardware issue that could result in needing to reconfigure the drive after a power cycle.

A parameter value is not permitted or is incorrect for encoderless operation, indicating an invalid configuration for the current operating mode. This can lead to improper motor control and potentially unsafe conditions if speed or position feedback is compromised.

Safety-related parameters have been modified, requiring a power cycle for the changes to take effect and be properly stored. Operating without a power cycle could result in an inconsistent or unapplied safety state, compromising machine safety.

The set time (p9559) for performing the forced checking procedure (test stop) of the extended functions has been exceeded. This indicates a required safety test is overdue, compromising safety integrity if not performed and potentially leading to a fault state.

A defect has been detected in a monitoring channel. The fault value r0949 provides more detailed information on the specific issue. This indicates a critical problem with safety monitoring that needs further investigation to ensure safe operation.

The Safe Torque Off (STO) function is active, meaning the motor's torque-generating energy is prevented, and the motor is freely rotating or at a standstill. This is a safety state initiated to prevent unintended startup, not necessarily a fault.

The Safe Stop 1 (SS1) function is active, meaning the motor is brought to a standstill via a controlled ramp, and then STO is activated. This is a safety state initiated to safely stop the motor, not necessarily a fault.

A fault was detected during the inverter's power-up sequence, preventing it from starting correctly. This could be a hardware issue or a configuration problem encountered during initialization, which needs to be resolved for the drive to become operational.

This fault is part of a group (F01641, F01650, F01680, F30680) that is expected to occur temporarily during specific corrective maintenance procedures, such as replacing a Control Unit or the entire inverter. It does not indicate a persistent problem if the full replacement and recommissioning steps are followed. The risk is negligible if acknowledged as part of the procedure.

An error occurred during the forced checking procedure (test stop) for the fail-safe digital output, indicating a potential wiring issue or malfunction of the output itself. This means the safety test failed, and the fail-safe output cannot be trusted.