F30885 — CU DRIVE-CLiQ (CU): Cyclic data transfer error

F30885 reports a cyclic DRIVE-CLiQ data transfer error inside the converter: communication from the power unit to the involved Control Unit has failed because the nodes no longer send and receive in synchronism. The drive coasts down and the fault must be acknowledged before it will run again. The message value tells you which component is affected and which of the possible fault causes triggered the message, so read it out before replacing anything.

• A DRIVE-CLiQ communication error has occurred in the cyclic data transfer from the power unit to the involved Control Unit — the nodes do not send and receive in synchronism.
• Both manuals that describe this fault give the same underlying cause; the specific reason is identified by the fault cause coded in the message value (see the fault value list below).

1. Check the power supply voltage of the component involved.
2. Carry out a POWER ON.
3. Replace the component involved.

• The message value consists of two placeholders: %1 is the component number, %2 is the fault cause.
• The individual information is coded in the message value (r0949/r2124) as 0000yyxx hex, where yy is the component number and xx is the error cause.
• Fault cause 26 (= 1A hex): the sign-of-life bit in the receive telegram is not set and the receive telegram is too early.
• Fault cause 33 (= 21 hex): the cyclic telegram has not been received.
• Fault cause 34 (= 22 hex): timeout in the telegram receive list.
• Fault cause 64 (= 40 hex): timeout in the telegram send list.
• Fault cause 98 (= 62 hex): error at the transition to cyclic operation.

• r0949 (fault value): read the coded message value of F30885 here — 0000yyxx hex, with the component number in yy and the fault cause in xx.
• r2124 (alarm value): named by the manual together with r0949 as the place where the same coded message value is stored.
• p9915 (DRIVE-CLiQ data transfer error shutdown threshold master / DQ fault master): the remedy entry for this fault refers to this parameter as related reading.

The fault must be acknowledged immediately once it occurs. The remedy sequence of the manual is: check the power supply voltage of the affected component, then carry out a POWER ON; if the fault still occurs, replace the component involved.