DSP received too many unknown SPI telegrams / MCO power-up issue

Hva betyr 1795 ?

The digital signal processor (DSP) received an excessive number of unknown SPI (Serial Peripheral Interface) telegrams. This fault code can also indicate an MCO (Motor Control Option) power-up issue, potentially caused by poor EMC protection or improper grounding.

• Electromagnetic interference (EMI) ingress corrupting SPI (Serial Peripheral Interface) communication lines between internal modules.
• Incompatible MCO (Motor Control Option) card firmware or hardware revision installed.
• Faulty MCO card or a loose connection of its ribbon cable to the main control board.
• Timing mismatch or clock synchronization issues on the SPI bus causing unknown telegram reception.
• Internal component failure on either the DSP board or the MCO card causing spurious data transmission.

Klikk på steg for å spore fremgangen.

1. 1

   Verify secure seating of the MCO card in its designated slot and inspect ribbon cable connections.

2. 2

   Check for and address potential sources of EMI near the drive and control cabinet wiring.

3. 3

   Confirm the MCO card hardware revision is compatible with the main control board and drive firmware.

4. 4

   Attempt to update the firmware of the MCO card, if applicable, using the specified programming tool.

5. 5

   Temporarily remove the MCO card from its slot and power up the drive to see if the fault clears (indicates MCO issue).