Fieldbus fault

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The data connection between the fieldbus Master controller and the fieldbus interface of the drive has been interrupted or broken. This results in a loss of communication with the higher-level control system.

• Failure to charge the DC bus capacitors to the required voltage.
• Pre-charge resistor failure or bypass contactor not closing.
• Line contactor not closed properly or faulty.
• Input power supply phase missing or voltage too low.
• Charging circuit fault.

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1. 1

   Inspect the entire fieldbus installation, including communication cables, termination resistors, and addressing settings, for proper configuration and integrity.