What it means
F01068 is raised by the CU when the utilization of one of its data memory areas is too large. The affected area is one of four high-speed data memories, and the fault value stored in r0949 tells you which one, bit by bit. All manuals that describe this code describe it in the same way, so the fault and its remedy are identical whatever SINAMICS converter you are standing at.
Why it appears
- The utilization of one of the CU's data memory areas is too large; the fault value shows which of the four high-speed data memories is affected.
What to check
- Read the fault value in r0949 as a binary number to identify which of the four high-speed data memory areas is overloaded.
- Deactivate the function module.
- Deactivate the drive object.
- Remove the drive object from the target topology.
Reading the message value
- The drive stores the fault value in r0949; interpret it as a binary number.
- Bit 0 = 1: High-speed data memory 1 overloaded
- Bit 1 = 1: High-speed data memory 2 overloaded
- Bit 2 = 1: High-speed data memory 3 overloaded
- Bit 3 = 1: High-speed data memory 4 overloaded
Parameters the manual names
- r0949 — fault value: read it in binary to see which of the four high-speed data memory areas the CU reports as overloaded.
Acknowledging and restarting
The converter coasts down when this fault occurs and must be acknowledged immediately before it will restart. Once one of the remedial steps above has been carried out, acknowledge the fault and start the drive again.
What differs between the drive families
Straight from the manuals' own fields — F01068 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | OFF2 | IMMEDIATELY | Error in the parameterization / configuration / commissioning procedure (18) | Control Unit (CU) | SINAMICS G130, G150 List Manual · p. 1387 |
| S120, S150 | OFF2 | IMMEDIATELY | Error in the parameterization / configuration / commissioning procedure (18) | Control Unit (CU) | SINAMICS S120, S150 List Manual · p. 2574 |
| G120 | OFF2 | — | Error in the parameterization / configuration / commissioning procedure (18) | — | SINAMICS G120 · p. 829 |
| G120XA | OFF2 | IMMEDIATELY | — | — | SINAMICS G120XA PN converter · p. 1107 |
The drives this code lives on
F01068 is described for G120, G120XA, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F01068 mean on a SINAMICS drive?
The CU has detected that the utilization of one of its data memory areas is too large. The fault value in r0949 shows which of the four high-speed data memories is overloaded.
How do I clear fault F01068?
Deactivate the function module, deactivate the drive object and remove the drive object from the target topology. Then acknowledge the fault and restart the drive.
Which memory area does F01068 point to?
Read r0949 as a binary number: bit 0 set means high-speed data memory 1 is overloaded, bit 1 memory 2, bit 2 memory 3 and bit 3 memory 4.
What does the drive do when F01068 is triggered?
It coasts down (OFF2) and the fault must be acknowledged immediately before the drive will restart.
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 F01xxx group · SINAMICS manuals · Siemens manuals