Lenze SHB4800/4900

This fault indicates an open circuit or very high resistance in the armature circuit of a DC motor, preventing current flow to the motor windings. This could be due to a loose connection, broken cable, or brush/commutator issue. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as the drive cannot control the motor without a complete armature circuit. Manual reset is required.

This fault indicates a general internal system error within the drive's hardware or software that is not categorized by a more specific code. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. This general fault warrants investigation as it could lead to unpredictable behavior or drive damage if ignored.

This fault signifies interference during the transmission of control commands via the automation interface. Such interference can result in delayed, incorrect, or lost commands, leading to unpredictable drive operation or complete loss of control from the automation system.

This fault indicates a problem with the serial communication interface, such as an interruption in data exchange, incorrect settings, or a faulty physical connection. The default behavior for this fault is to be switchable off, suggesting it might be configurable to a warning or message level, but its presence still indicates a potential loss of control or monitoring via the serial interface.

This fault indicates a loss or error in communication with an installed option module (e.g., a fieldbus card or specific I/O module). By default, this condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as the drive may not be able to operate safely or correctly without the option module's functionality. Manual reset is required.

This fault is triggered by an external safety circuit or monitoring device connected to the drive, indicating a condition outside the drive itself requires attention. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as it typically signifies an important external protective function has been activated. Manual reset is required.

This fault indicates an open circuit or very high resistance in the field circuit of a DC motor, preventing or severely limiting current flow to the motor field winding. Without a proper field, a DC motor can become unstable or overspeed. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, to prevent uncontrolled operation and potential damage. Manual reset is required.

This fault occurs when the frequency of the incoming mains power supply falls below the specified operating range. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal to prevent damage to the drive and motor that could result from operation at an incorrect frequency. Manual reset is required after the frequency stabilizes.

This fault indicates that the incoming mains voltage has dropped below the permissible operating threshold for the drive. By default, this condition is configured as a Warning, meaning it alerts the operator and is entered into the history buffer, but it does not immediately inhibit pulses. Continued operation under undervoltage can lead to reduced motor performance or potential damage if not resolved promptly.

This fault indicates an issue with one or more phases of the incoming mains power supply, such as a phase loss, imbalance, or incorrect phase sequence. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal to protect the drive and motor from operating under compromised power conditions, which could lead to damage. It requires manual reset.

This fault indicates an I²t overload condition, meaning the motor or drive has experienced excessive current over an extended period, leading to thermal stress. By default, it triggers a full TRIP, inhibiting all ignition pulses for both armature and field circuits and resetting the Ready signal. This protective action prevents components from overheating and potential damage, requiring manual reset after the fault is cleared.

This fault signifies an I²t overload condition, where the motor or drive has been operating with high current for an extended duration, causing excessive heat. The default behavior for this fault is to be switchable off, suggesting it might be configurable to a warning or message level, but its presence still indicates potential thermal stress on the components if not addressed.

This fault indicates that the frequency of the incoming mains power supply has risen above the specified operating range. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal to prevent damage to the drive and motor that could result from operation at an incorrect frequency. Manual reset is required after the frequency stabilizes.

This fault indicates that the drive's heat sink temperature has exceeded its safe operating limit, typically due to insufficient cooling or excessive loading. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal to protect the drive's power semiconductors from thermal damage. Manual reset is required after the drive has cooled down and the cause is addressed.

This fault occurs when the incoming mains voltage exceeds the permissible operating range for the drive. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal to protect the drive's power electronics from damage due to overvoltage. It requires manual reset after the voltage issue is resolved.

This fault indicates that the actual position or speed of the motor has deviated from the commanded set-point by more than an acceptable tolerance. This typically suggests a dynamic control issue, insufficient motor torque, or mechanical problem. By default, this condition is configured as a "Message without pulse inhibit", meaning it alerts the operator and is logged, but it does not stop the drive. However, persistent following errors can indicate a problem affecting process quality or system wear.

This fault typically occurs in position control applications and indicates that the internal position counter or angle calculation has overflowed or reached an invalid state, making accurate position detection impossible. This could be due to excessive speed, incorrect scaling, or feedback issues. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as accurate position is lost. Manual reset is required.

This fault indicates an internal error within the drive's operating program or firmware. This is a critical internal software issue. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. A program error can lead to unpredictable drive behavior and potential system instability or damage.

This fault indicates an inconsistency or error within the drive's stored parameter settings. This could be due to corrupted data, an invalid parameter value, or an incorrect parameter set loaded. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Incorrect parameters can lead to improper drive operation or damage.

This fault specifically indicates that user-defined parameter set 1, stored in the drive's memory, has become corrupted or is invalid. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Using a defective parameter set can lead to improper drive operation or damage.

This fault specifically indicates that user-defined parameter set 2, stored in the drive's memory, has become corrupted or is invalid. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Using a defective parameter set can lead to improper drive operation or damage.

This fault specifically indicates that user-defined parameter set 3, stored in the drive's memory, has become corrupted or is invalid. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Using a defective parameter set can lead to improper drive operation or damage.

This fault specifically indicates that user-defined parameter set 4, stored in the drive's memory, has become corrupted or is invalid. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Using a defective parameter set can lead to improper drive operation or damage.

This fault indicates that the polarity of an analog input signal (e.g., set-value, feedback) is inverted or incorrect, causing the drive to interpret the signal incorrectly. By default, this condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as incorrect polarity can lead to unstable or dangerous operation. Manual reset is required.

This fault indicates a problem with an analog encoder providing feedback to the drive, such as a broken wire, short circuit, or the encoder itself being faulty. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as accurate feedback is essential for stable and safe control. Manual reset is required.

This fault indicates a problem with the resolver feedback device, which provides position and speed information to the drive. This could be due to wiring issues, a faulty resolver, or mechanical damage. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as precise resolver feedback is crucial for motor control. Manual reset is required.

This fault indicates a problem with an encoder connected to terminal X5 on the drive. This could be due to wiring issues, a faulty encoder, or mechanical damage. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as encoder feedback at this input is crucial for motor control. Manual reset is required.

This fault indicates a problem with an encoder connected to terminal X9 on the drive. This could be due to wiring issues, a faulty encoder, or mechanical damage. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as encoder feedback at this input is crucial for motor control. Manual reset is required.

This fault indicates a problem with a 4-20mA current loop signal used as a set-value input, likely from an encoder or other process sensor. This could be due to an open circuit, short circuit, or the signal source being faulty. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as a lost or incorrect set-value can lead to uncontrolled operation. Manual reset is required.

This fault indicates an issue with the drive's internal 15V power supply, which typically powers internal control circuitry, sensors, or external devices. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as instability in this supply can compromise the drive's internal operations and safety functions. Manual reset is required.

This fault indicates that the motor's shaft is prevented from rotating or is rotating significantly slower than commanded, likely due to a mechanical obstruction or excessive load. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal to prevent motor damage, overheating, or mechanical stress on the system. Manual reset is required.