F34860 — VSM DRIVE-CLiQ (CU): Telegram error

F34860 reports a DRIVE-CLiQ telegram error on the link from the Voltage Sensing Module (VSM) involved to the Control Unit (CU): the telegram that the Control Unit received from the VSM was defective. The message value tells you which component sent the faulty telegram and what exactly was wrong with it, so the coded fault cause determines where to look on the DRIVE-CLiQ line. The manuals describe this code identically for the S120/S150 and the G130/G150; on the G130/G150 the remedy additionally points to p9915.

• The DRIVE-CLiQ link between the Voltage Sensing Module (VSM) involved and the Control Unit has carried a defective telegram — a communications error on this link raised the fault. Which defect the drive detected is coded in the message value (see the fault value decoding below).

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 and the like.

The drive stores the message value in r0949 — as alarm value in r2124 — coded as 0000yyxx hex: yy is the component number of the VSM involved, xx the fault cause:

• 1–6 (01–06 hex): the telegram content is defective — CRC checksum error (1); telegram shorter (2) or longer (3) than the length byte or the receive list specifies; length (4) or type (5) of the receive telegram does not match the receive list; power unit address in telegram and receive list do not match (6).
• 9 (09 hex): the component involved signals to the Control Unit that its supply voltage has failed.
• 16–22 (10–16 hex): the receive telegram arrived too early — on its own (16, 10 hex) or combined with one of the errors 1–6 (17–22, 11–16 hex).
• 25 (19 hex): the error bit is set in the receive telegram, which also arrived too early.

• r0949 — fault value: read the code of this message here as 0000yyxx hex; yy gives the VSM component number and xx the fault cause listed above.
• r2124 — alarm value: holds the same 0000yyxx coding when the message is stored as an alarm value.
• p9915 — DRIVE-CLiQ data transfer error shutdown threshold master: the manual cross-references this threshold parameter in the remedy for this fault on the G130/G150.

Remove the cause first; the manual's first remedy step, a POWER ON (switch-off/switch-on), restarts the DRIVE-CLiQ communication. Once the fault has been acknowledged, the drive can be started again.