Device unknown

What does 40 mean?

The frequency converter has detected an unknown or incompatible option board or drive, or there's a specific mismatch between power unit types (e.g., Power1 not same type as Power2, indicated by subcode S2). This signifies an incorrect or unrecognized hardware component has been installed. Using incompatible hardware can lead to malfunction or damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If unable to resolve the compatibility issue, contact your Vacon distributor for further investigation and recommended components.