What does 121 mean?

The intermediate circuit current monitoring safeguard has triggered due to an overcurrent condition. This will cause maximum braking and inhibit all active commands.

• Motor current exceeding the maximum rated limit defined by parameter P1-25.
• Excessive load on the driven equipment causing high torque demand.
• Short circuit in the motor windings or power cabling.
• Inadvertent command for acceleration exceeding system capabilities.

Click steps to track your progress.

1. 1

   Rectify the fault condition causing the overcurrent.

2. 2

   Reset the fault by pressing the hardware acknowledgement button 'ACK' on the DSE I module.