What it means
F32899 reports that the Sensor Module connected as encoder 2 has signalled a fault that the Control Unit firmware cannot interpret. The manuals explain this as a firmware version mismatch: it can occur when the firmware on the Sensor Module is more recent than the firmware on the Control Unit. The manuals for S120, S150, G130 and G150 describe this fault identically, so one explanation covers all of them.
Depending on how the drive is configured, the same condition can also be signalled only as an alarm (A) or without any reaction (N).
Why it appears
- A fault occurred on the Sensor Module for encoder 2 that cannot be interpreted by the Control Unit firmware.
- This can occur if the firmware on this component is more recent than the firmware on the Control Unit.
What to check
- Read the fault number the Sensor Module reported: it is stored in r0949 and must be interpreted as a decimal number.
- Compare the firmware versions: read the Sensor Module firmware version in r0148 and the Control Unit firmware version in r0018. The fault typically means the Sensor Module firmware is newer than the Control Unit firmware.
- If required, read about the significance of this new fault number in a more recent description of the Control Unit.
- Align the firmware versions using one of the two measures the manuals give: replace the firmware on the Sensor Module by an older firmware version (r0148 shows the version currently on the Sensor Module), or upgrade the firmware on the Control Unit (r0018 shows the version currently on the Control Unit).
Reading the message value
- The drive stores the fault number of the unknown fault in r0949; interpret the value as a decimal number.
- The manuals give no bit decoding for this value. If required, the significance of this new fault can be read about in a more recent description of the Control Unit.
Parameters the manual names
- r0949 — holds the fault value of this fault; read it as a decimal to obtain the fault number the Sensor Module reported.
- r0148 — shows the Sensor Module firmware version (SM FW version); use it to confirm the mismatch and to select the older firmware version to load onto the Sensor Module.
- r0018 — shows the Control Unit firmware version (CU FW version); use it to check whether the Control Unit must be upgraded.
Acknowledging and restarting
Acknowledge the fault immediately once the firmware combination has been corrected. The manuals specify acknowledgement with a POWER ON: switch the drive's power off and back on so that it restarts with the corrected firmware. Acknowledging alone does not remove the cause, so the fault is expected to return until either an older firmware version is on the Sensor Module or the Control Unit firmware has been upgraded.
What differs between the drive families
Straight from the manuals' own fields — F32899 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Servo: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) Vector: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) Hla: OFF1 (NONE, OFF2, OFF3, STOP2) | IMMEDIATELY (POWER ON) | Actual position/speed value incorrect or not available (11) | Sensor Module Encoder 2 | SINAMICS S120, S150 List Manual · p. 3126 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) | IMMEDIATELY (POWER ON) | Actual position/speed value incorrect or not available (11) | Sensor Module Encoder 2 | SINAMICS G130, G150 List Manual · p. 1802 |
The drives this code lives on
F32899 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F32899 on my SINAMICS mean?
The Sensor Module for encoder 2 has reported a fault that the Control Unit firmware cannot interpret. This usually happens when the firmware on the Sensor Module is more recent than the firmware on the Control Unit.
How do I fix F32899?
Align the firmware versions: either load an older firmware version onto the Sensor Module or upgrade the Control Unit firmware. r0148 shows the Sensor Module version and r0018 the Control Unit version, so you can see which side is behind.
Where can I find what the fault number in r0949 means for F32899?
The value in r0949 is a new fault number the Control Unit firmware does not know yet. The manual recommends looking up its significance in a more recent description of the Control Unit.
How is F32899 acknowledged?
Immediately, and the manuals specify a POWER ON as the acknowledging action. Correcting the firmware mismatch first is what actually clears the condition.
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 F32xxx group · SINAMICS manuals · Siemens manuals