Undervoltage

What does 9 mean?

The DC-link voltage has fallen below its defined limits. This is most commonly caused by a low supply voltage, a temporary supply voltage break, a defect in an input fuse, or an external charge switch not being closed. Persistent undervoltage can cause erratic drive behavior or prevent it from starting.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect input fuses for continuity and proper rating.

2. 4

   Verify the state of any external charge switches.

3. 5

   If supply voltage is adequate and the problem persists, an internal failure may have occurred – contact the distributor.