Overcurrent in mains-side power section

What does F2860 mean?

An excessive current has been detected in the mains-side power section (input rectifier) of the drive. This indicates a high current draw from the AC mains supply, potentially due to a short circuit, an internal component failure in the rectifier, or extreme loading conditions. This fault triggers an immediate shutdown to protect the drive from damage.

• Short circuit in the mains rectifier bridge
• Input filter component failure
• Severe overvoltage condition on the mains input
• Internal short in the power supply unit
• Incorrectly rated input fuse or breaker

Click steps to track your progress.

1. 1

   Measure the incoming AC supply voltage at the drive's input terminals (L1, L2, L3) to verify it is within the specified operating range and balanced across phases.

2. 2

   Inspect the main power supply cables and connections to the drive's input terminals for signs of damage, insulation breakdown, loose connections, or short circuits.

3. 3

   Verify that the connected motor and mechanical load are not experiencing extreme conditions (e.g., mechanical binding, excessive friction, or incorrect sizing) that could lead to excessive current demand from the drive.

4. 4

   Check the drive's configuration parameters related to current limits, motor data, and acceleration/deceleration ramps for proper settings according to the application and motor specifications.