Lenze System manual 8200

The drive has detected a motor phase failure and issued a Warning, indicated via the fieldbus interface. This means one or more motor phases are inactive or drawing insufficient current, but the drive may still be operating or preparing to trip. It requires prompt attention to prevent potential motor or drive damage if the condition persists.

The drive has detected a motor phase failure and has triggered a TRIP fault, indicated via the fieldbus interface. This means one or more motor phases are inactive or drawing insufficient current. The fault prevents further operation and requires investigation of motor connections or parameters to avoid motor or drive damage.

An external digital input, configured for the TRIP-Set function, has been activated, triggering a fault condition. This indicates an external safety or interlock circuit has been tripped, potentially stopping the drive. If left unaddressed, the drive will remain inhibited, preventing operation.

This indicates a fault within the internal circuitry of the drive controller itself. The specific cause is not detailed in the manual, suggesting a fundamental hardware or firmware issue. Continued operation with an internal fault could lead to further damage to the controller or unexpected system behavior.

One or more motor phases have failed, or the motor current has dropped below an expected minimum. This could be due to a disconnected cable, an open circuit within the motor, or incorrect parameter settings. Operating with a phase failure can cause motor overheating, damage to the drive, and inefficient operation.

The DC-bus voltage in the drive has fallen below the acceptable operating threshold. This is typically caused by insufficient or unstable mains voltage supplied to the drive, or a fault within the supply module. Low DC-bus voltage prevents the drive from delivering adequate power to the motor and can lead to erratic operation or shutdown.

A short-circuit condition or an excessive capacitive charging current in the motor cable has been detected. The former can be due to damaged wiring or motor faults, while the latter can occur with very long or high-capacitance motor cables, causing the drive to trip due to high initial currents. This can lead to nuisance tripping, operational instability, and severe damage to the inverter output stage if a true short circuit is present.

An earth fault has been detected, potentially due to a grounded motor phase or excessive capacitive charging current in the motor cable. This indicates a breakdown in insulation within the motor or its cables, or spurious signals from long, high-capacitance cables. An earth fault poses an electrical safety hazard, can damage the drive's output stage, and cause nuisance trips.

The inverter has experienced an overload during the acceleration phase, potentially due to the acceleration time parameter (C012) being set too short, a defective motor cable, or an interturn fault within the motor. This indicates the drive is attempting to deliver more current than its rating, which can cause overheating and damage to the inverter if prolonged.

The drive controller has experienced an overload condition during deceleration, primarily caused by the deceleration time (C013) being set too short. This leads to regenerative energy being fed back to the DC bus faster than it can be dissipated, causing the bus voltage to rise and triggering an overload. This can damage the inverter if not properly managed.

This fault indicates a cumulative overcurrent condition, often resulting from frequent and prolonged acceleration processes or continuous operation with the motor current exceeding 105% of the drive's rated current. The drive's internal I x t model has determined that the thermal stress on the inverter is excessive. Persistent I x t overload can lead to premature failure of the drive's power components.

The connected motor is thermally overloaded, likely due to impermissible continuous current, frequent, or excessively long acceleration processes. The drive's internal motor protection model has detected that the motor's temperature limits are being exceeded. Sustained motor overload can cause insulation breakdown and permanent damage to the motor.

The temperature of the drive's heat sink has exceeded its maximum permissible limit. This is often caused by high ambient temperatures within the control cabinet, insufficient ventilation, a dirty heat sink impeding heat dissipation, or incorrect mounting position restricting airflow. Overtemperature significantly shortens the lifespan of electronic components and can lead to drive failure.

The motor's PTC (Positive Temperature Coefficient) thermistor has detected an overtemperature condition within the motor, indicating it is too hot due to excessive currents, frequent, or prolonged accelerations. Alternatively, this fault can occur if the PTC sensor is not properly connected or its monitoring is not correctly configured. High motor temperatures can damage insulation and reduce motor lifespan.

The internal temperature of the drive unit itself has become excessively high. This is typically due to continuous operation at high loads, insufficient cooling, or a malfunctioning internal cooling fan. Sustained internal overtemperature can severely degrade electronic components, leading to reduced reliability and potential failure of the drive.

The DC-bus voltage has exceeded its maximum permissible limit. This can be caused by an excessively high incoming mains voltage, or by regenerative energy feedback from the motor during braking or feedback operation. If the drive cannot dissipate this excess energy, the overvoltage can damage the internal power components.

The incoming mains voltage has been continuously above its specified limit for more than 5 seconds. This indicates a persistent problem with the power supply quality, which can stress the drive's input rectifier and DC-bus capacitors. Prolonged exposure to mains overvoltage can lead to premature failure of input stage components.

A general error occurred during the transfer of parameters via the operating module, specifically indicating that both parameter sets (PAR1 and PAR2) are defective. This means the drive's configuration data is corrupt or could not be reliably written. Operating with corrupted parameters can lead to unpredictable drive behavior or prevent the drive from starting.

An error occurred during the transfer of parameter set 1 (PAR1) via the operating module, indicating that PAR1 is defective or corrupted. This means the primary operating configuration of the drive is unreliable. The drive should not be enabled until this is resolved, as it may operate incorrectly or unsafely.

An error occurred during the transfer of parameter set 2 (PAR2) via the operating module, indicating that PAR2 is defective or corrupted. This means the secondary or alternative operating configuration of the drive is unreliable. The drive should not be enabled until this is resolved, as it may operate incorrectly or unsafely.

The drive's auto-TRIP reset function has failed because more than 8 fault messages occurred within a 10-minute period. This indicates an underlying, persistent problem that is repeatedly triggering faults, preventing the drive from reliably resetting itself. The frequent faults suggest an unstable operating condition that requires thorough investigation to prevent damage.