F30820 — Power unit DRIVE-CLiQ: Telegram error

F30820 reports that the power unit has detected a telegram error on DRIVE-CLiQ: a DRIVE-CLiQ communication error occurred from the Control Unit to the power unit concerned. The affected component is the Power Module, and the manuals describe the code identically for the G130/G150 and the S120/S150. The message value names the component that reported the fault and the specific telegram problem it detected, so the fault value tells you exactly which telegram problem occurred.

• A DRIVE-CLiQ communication error occurred from the Control Unit to the power unit concerned; the power unit detected the error in a telegram it received over DRIVE-CLiQ.

1. Carry out a POWER ON — switch the drive off and on again.
2. Check the electrical cabinet design and the cable routing for EMC compliance.
3. Check the DRIVE-CLiQ wiring (interrupted cable, contacts, ...).

• The message value is "Component number: %1, fault cause: %2". The manual decodes it in r0949 and r2124 as 0000yyxx hex, where yy = component number and xx = error cause.
• 1 (= 01 hex): Checksum error (CRC error).
• 2 (= 02 hex): Telegram is shorter than specified in the length byte or in the receive list.
• 3 (= 03 hex): Telegram is longer than specified in the length byte or in the receive list.
• 4 (= 04 hex): The length of the receive telegram does not match the receive list.
• 5 (= 05 hex): The type of the receive telegram does not match the receive list.
• 6 (= 06 hex): The address of the component in the telegram and in the receive list do not match.
• 7 (= 07 hex): A SYNC telegram is expected - but the received telegram is not a SYNC telegram.
• 8 (= 08 hex): No SYNC telegram is expected - but the received telegram is one.
• 9 (= 09 hex): The error bit in the receive telegram is set.
• 16 (= 10 hex): The receive telegram is too early.

• r0949 (fault value): holds this fault's value — read the component number and the fault cause out of it using the 0000yyxx hex coding listed above.
• r2124 (alarm value): named by the manual alongside r0949; the same 0000yyxx hex coding is found there.
• p9916 (DRIVE-CLiQ data transfer error shutdown threshold slave): the threshold for DRIVE-CLiQ data transfer errors at the slave — the remedy for this fault points to this parameter, so include its setting in the check.

The fault must be acknowledged before the drive will start again. The manual's remedy begins with a POWER ON (switch off/on): after checking the electrical cabinet design and cable routing for EMC compliance and inspecting the DRIVE-CLiQ wiring, switch the drive off and on, acknowledge the fault and then restart.