Fagor MCS Series - E.802 Defective encoder; E.803 Encoder not initialized

MCS- 86/92 Digital Brushless AC servo drive system - Ref.0707
Cause Communication error when using a SINCOS™ or SINCODER™
encoder.
Incoherent U, V, W signals when using an incremental I0 encoder.
Solution. Contact Fagor Automation.
Solution. Contact Fagor Automation.
E.802 Defective encoder
E.803 Encoder not initialized