What it means
A06860 is an alarm that the infeed raises when a function module cannot be activated. The fault value r0949 identifies the affected function module: the value of r0949 corresponds to the bit of parameter p0108. A value of 7 stands for the "Dynamic grid support" function module, a value of 12 for the "Line droop control" function module.
Why it appears
- Function module activation is not possible.
- The power unit used does not have at least one of the following features: the "gating unit with current limiting control" feature (r0192.19) or the "gating unit with all-phase current limiting" feature (r0192.30).
What to check
- Check whether the power unit used has the "gating unit with current limiting control" feature (r0192.19) or the "gating unit with all-phase current limiting" feature (r0192.30) — both features can be read as bits in r0192.
- If necessary, use a power unit that has at least one of these features.
Reading the message value
- The drive identifies the affected function module in the fault value r0949; the value of r0949 corresponds to the bit of parameter p0108.
- r0949 = 7: "Dynamic grid support" function module
- r0949 = 12: "Line droop control" function module
Parameters the manual names
- r0192 (Power unit firmware properties 1): read bits r0192.19 and r0192.30 here to check whether the power unit has the "gating unit with current limiting control" feature or the "gating unit with all-phase current limiting" feature.
- r0949 (Fault value): tells you which function module could not be activated — 7 for "Dynamic grid support", 12 for "Line droop control".
- p0108 (Drive objects function module): the value of r0949 corresponds to the bit of this parameter.
- p5401 (BI: Line droop control activation): the parameter via which the "Line droop control" function module is activated — the function module identified when r0949 = 12.
Acknowledging and restarting
No acknowledgement is required. The alarm triggers no automatic response from the drive and clears itself once the function module can be activated again — for example, once a power unit with at least one of the required features is used.
The same on every family
Every manual that describes A06860 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | Power Module | SINAMICS S120, S150 List Manual · p. 2773 |
The drives this code lives on
A06860 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A06860 on my SINAMICS infeed mean?
The infeed could not activate a function module. The value in r0949 identifies which one: 7 is the "Dynamic grid support" function module and 12 is the "Line droop control" function module.
How do I fix alarm A06860?
Check in r0192 whether the power unit has the "gating unit with current limiting control" feature (r0192.19) or the "gating unit with all-phase current limiting" feature (r0192.30). If necessary, use a power unit that has at least one of these features.
Why will line droop control not activate on my infeed?
Because the power unit used does not have one of the gating-unit features required for the activation (r0192.19 or r0192.30). The drive reports this with A06860 and puts the value 12 for the "Line droop control" function module into r0949.
Does A06860 have to be acknowledged before the drive restarts?
No. The alarm requires no acknowledgement and triggers no automatic drive response; it clears itself once the function module can be activated again.
Codes next to this one
Source
Written from Siemens' own List Manuals and operating instructions; every number, designation and parameter on this page is checked against them before publication.
All SINAMICS codes: fault and alarm codes · the A06xxx group · SINAMICS manuals · Siemens manuals