Error Codes

Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.

• CodeSiemens MICROMASTER 420 Error A0705: CB warning 6

  CB warning 6 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0704: CB warning 5

  CB warning 5 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0703: CB warning 4

  CB warning 4 indicates a specific issue with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0702: CB warning 3

  CB warning 3 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0701: CB warning 2

  CB warning 2 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0700: CB warning 1

  CB warning 1 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0600: RTOS Overrun Warning

  RTOS Overrun Warning indicates a software error in the real-time operating system. The manual lists no action for this code.

• CodeSiemens MICROMASTER 420 Error A0541: Motor Data Identification Active

  Motor data identification is active and running. The manual's first action is: “Wait until motor identification is finished”

• CodeSiemens MICROMASTER 420 Error A0511: Motor Over-temperature ï†

  Motor Over-temperature ï† indicates the motor has exceeded its temperature limit. The manual's first action is: “Check the following: 1. P0611 (motor ï† time constant) should be set to appropriate value 2. P0614 (Moto…

• CodeSiemens MICROMASTER 420 Error A0506: Inverter Duty Cycle

  The inverter duty cycle has exceeded allowable temperature limits. The manual's first action is: “Check if duty cycle are within specified limits”

• CodeSiemens MICROMASTER 420 Error A0505: Inverter ï†

  Inverter ï† indicates warning level exceeded with current reduced if parameterized. The manual's first action is: “Check if duty cycle is within specified limits”

• CodeSiemens MICROMASTER 420 Error A0504: Inverter Over-temperature

  Inverter Over-temperature code A0504 indicates the heat-sink temperature has exceeded warning level, causing reduced output. The manual's first action is: “Check if ambient temperature is within specified limits”

• CodeSiemens MICROMASTER 420 Error A0503: Undervoltage Limit

  The inverter has detected a voltage level below the minimum acceptable limit. The manual's first action is: “Check main supply voltage (P0210)”

• CodeSiemens MICROMASTER 420 Error A0502: Overvoltage limit

  The inverter has detected an overvoltage condition that exceeds the allowable limit. The manual's first action is: “Check that mains supply voltage is within allowable range”

• CodeSiemens MICROMASTER 420 Error A0501: Current Limit

  The inverter has detected a current limit condition. The manual's first action is: “Check whether the motor power corresponds to the inverter power”