Fagor alarm 4093: ERROR 502: Wrong parameter value
CNC 8055 SERCOS drive error (DDS) · Fagor DDS drives
What it means
One or more drive parameters contain values outside their valid range or forbidden combinations. PWM is deactivated (category 0 stop) and the error requires correcting the value(s) plus a power cycle, since it is not resettable from the CNC.
Likely causes
- Manually entered parameter outside limits
- Parameter file for another drive size/software version
- Bit corruption in non-volatile memory
Need the part urgently?
Send us alarm 4093 with your machine details — typical RFQ turnaround is 24–48h.