Allen-Bradley 160 AC

This fault indicates that the DC Bus voltage has remained below 85% of its nominal value for more than 5 seconds during power-up. It points to an issue with the incoming AC supply, potentially leading to unstable operation or damage if the controller attempts to operate with insufficient power.

This fault occurs when the DC Bus voltage drops below a minimum threshold during operation. For 200-240V AC rated controllers, this trip happens at 210V DC bus (150V AC incoming); for 380-460V AC rated controllers, it's 390V DC bus (275V AC incoming). Persistent undervoltage can cause erratic controller behavior and motor performance issues.

This fault signifies that the DC Bus voltage has exceeded its maximum limit during operation. For 200-240V AC rated controllers, this trip occurs at 410V DC bus (290V AC incoming); for 380-460V AC rated controllers, it's 815V DC bus (575V AC incoming). This often happens due to motor regeneration, which can put excessive stress on the controller's internal components.

This fault indicates that the connected motor has stalled, meaning it is not rotating or is rotating significantly slower than commanded. The primary cause is an excessive mechanical load on the motor, preventing it from turning freely. Continuing to operate under stall conditions can lead to motor and controller overheating and damage.

This fault is triggered by the controller's internal electronic overload protection, signifying that the motor is drawing excessive current for an extended period. An excessive mechanical load is usually the cause. Sustained overload can lead to motor winding damage and premature controller failure.

This fault indicates that the controller's internal temperature, typically measured at the heatsink, has exceeded its safe operating limit. This is often caused by insufficient cooling. Prolonged operation at high temperatures can severely degrade the lifespan of the controller's electronic components.

This fault occurs specifically when the program keypad module is physically removed from the controller while the controller is still powered on. It is a protective measure to prevent unintended parameter changes or operational interruptions.

This fault is triggered by the hardware trip circuit detecting an excessive current condition at the controller's output. This is a critical fault that can be caused by a short circuit in the motor windings or wiring, or by severe overload conditions. Ignoring this can lead to immediate damage to the controller's output stage or the motor.

This fault indicates that the controller's EEPROM (Electrically Erasable Programmable Read-Only Memory) contains invalid or corrupted data. This memory stores critical operating parameters. Corrupted data can lead to improper controller operation or an inability to function correctly.

This fault occurs when the controller has failed to successfully reset a previous fault condition within the maximum number of attempts defined by parameter P50 – [Restart Tries]. This indicates an underlying persistent issue that cannot be automatically cleared.

This fault indicates a phase-to-ground fault has been detected specifically on the 'U' phase wiring between the controller and the motor. This could be due to damaged insulation or a direct short. Such a fault poses an electrical safety hazard and can damage both the controller and motor if unresolved.

This fault indicates a phase-to-ground fault has been detected specifically on the 'V' phase wiring between the controller and the motor. This could be due to damaged insulation or a direct short. Such a fault poses an electrical safety hazard and can damage both the controller and motor if unresolved.

This fault indicates a phase-to-ground fault has been detected specifically on the 'W' phase wiring between the controller and the motor. This could be due to damaged insulation or a direct short. Such a fault poses an electrical safety hazard and can damage both the controller and motor if unresolved.

This fault indicates that excessive current has been detected between the 'U' and 'V' output terminals of the controller. This is typically caused by a short circuit either within the motor windings themselves or in the external wiring connecting the controller to the motor. This is a critical fault that can cause immediate and severe damage to the controller's inverter section.

This fault indicates that excessive current has been detected between the 'U' and 'W' output terminals of the controller. This is typically caused by a short circuit either within the motor windings themselves or in the external wiring connecting the controller to the motor. This is a critical fault that can cause immediate and severe damage to the controller's inverter section.

This fault indicates that excessive current has been detected between the 'V' and 'W' output terminals of the controller. This is typically caused by a short circuit either within the motor windings themselves or in the external wiring connecting the controller to the motor. This is a critical fault that can cause immediate and severe damage to the controller's inverter section.

This fault is generated when the controller's operating parameters have been reset to their factory default values. While often initiated intentionally, it serves as an indicator that a significant configuration change has occurred, potentially requiring re-commissioning.

This fault occurs when the motor requires an excessively high current while operating at zero hertz (stopped), or if the P38 – [Boost Volts] parameter is set too high. This condition can lead to motor and controller overheating even before motion begins.