F06321 — Master/slave: 6-channel multiplexer control not valid

F06321 monitors the master/slave current distribution: a 6-channel multiplexer selects the current distribution factor, and the selection is fed to connector input p3577 through a BICO interconnection (CI: p3577). Only the values 0, 1, 2, 3, 4 and 5 are valid. If the drive identifies any other value at p3577, it raises F06321; the multiplexer control remains effective with the previous value, so the last valid selection stays in force until a valid value is applied again.

• An invalid value was identified for the 6-channel multiplexer control via connector input p3577 — the valid values are 0, 1, 2, 3, 4 and 5.

1. Read the fault value in r0949, interpreting it as a decimal number — it contains the invalid value that was used to control the multiplexer.
2. Check the interconnection used to control the multiplexer (CI: p3577).
3. Check the signal value of the signal source of the BICO interconnection and make sure it supplies one of the values 0, 1, 2, 3, 4 or 5.

• r0949, interpret decimal: invalid value used to control the multiplexer. The drive writes the offending value into r0949; read the number decimally to see which value was applied at p3577. No bit assignment is given for this fault value.

• p3577 (CI: Master/slave current distribution factor multiplexer selection / I_dist_factor sel) — the connector input whose value triggers this fault; check the BICO interconnection at CI: p3577 and the value it delivers, since only 0, 1, 2, 3, 4 and 5 are valid.
• r0949 (fault value) — read it, interpreting the value decimally, to see the invalid value with which the multiplexer was controlled.

The drive takes no automatic reaction to this fault: while the value is invalid, the multiplexer control simply keeps working with the previous value. Correct the interconnection or its signal source so that p3577 again receives one of the values 0, 1, 2, 3, 4 or 5, and acknowledge the fault — it can be acknowledged immediately.