DC Bus Limit

¿Qué significa 3211 ?

The drive is limiting torque due to an intermediate circuit DC voltage that is either too high or too low. This is an informative alarm (programmable Fault Function 30.23, bit 1: DC_VOLT_LIM_IND) indicating the drive is actively compensating to protect internal components from over or undervoltage conditions.

• DC bus voltage exceeding the maximum allowable limit.
• Overly aggressive deceleration ramp causing regenerative braking energy overload.
• External braking resistor failure or undersized for the application.
• Control parameters (e.g., P2-20) set too high for the system's regenerative capacity.

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1. 1

   Check Fault Function parameter 30.23 (LIMIT WARNING) to ensure it is correctly configured for DC bus voltage supervision.