Overvoltage

What does 2 mean?

The DC-link voltage has exceeded its predefined limits. This often occurs due to overly short deceleration times during motor stopping, or significant overvoltage spikes originating from the mains supply. For 400-500Vac mains, a fault trips at 911Vdc (warning at 860Vdc); for 500-690Vac mains, a fault trips at 1250Vdc (warning at 1150Vdc). Subcodes S1 (hardware trip) and S2 (overvoltage control supervision) provide additional diagnostic context.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Measure the incoming AC supply voltage at the drive input terminals to check for transient spikes or sustained high voltage.