What it means
C30797 is a safety message of the SI Motion P2 safety functions (SI: Safety Integrated). It signals that the axis is not safely referenced: the standstill position saved before switching off does not match the actual position determined at switch-on. The message value tells you which of the two conditions the drive has found — an axis that is not safely referenced, or a missing user agreement.
Why it appears
- The standstill position that was saved before the drive was switched off does not match the actual position that is determined when the drive is switched on again.
What to check
- Read the message value in r9749 and interpret it as a decimal number to see whether the drive is signaling an axis that is not safely referenced (1) or a missing user agreement (2).
- If safe automatic referencing is not possible, the user must issue a user agreement for the new position using the softkey.
- The position agreed in this way is then designated as safety-relevant.
Reading the message value
- The drive stores the message value in r9749; interpret the value as a decimal number.
- 1 — Axis not safely referenced.
- 2 — User agreement missing.
Parameters the manual names
- r9749 — SI message value / SI msg_value: holds the value that tells you which condition this message is signaling; interpret it as a decimal number (see the decoding above).
Acknowledging and restarting
The remedy is the way back into operation: where safe automatic referencing is not possible, the user issues a user agreement for the new position with the softkey, and that position is then designated as safety-relevant. Acknowledge the message in the way the acknowledgment column of the message table specifies for your converter.
What differs between the drive families
Straight from the manuals' own fields — C30797 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | Safety monitoring channel has identified an error (10) | None | SINAMICS S120, S150 List Manual · p. 3012 |
| G130, G150 | NONE | IMMEDIATELY (POWER ON) | Safety monitoring channel has identified an error (10) | None | SINAMICS G130, G150 List Manual · p. 1704 |
The drives this code lives on
C30797 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 C30797 — SI Motion P2: Axis not safely referenced mean?
It is a safety message of the SI Motion P2 safety functions (SI: Safety Integrated). It is raised because the standstill position saved before switching off does not match the actual position determined at switch-on, so the axis is not safely referenced.
How do I clear C30797 on a SINAMICS drive?
Check the message value in r9749, interpreted as a decimal number: 1 means the axis is not safely referenced, 2 means the user agreement is missing. If safe automatic referencing is not possible, issue a user agreement for the new position using the softkey — that position is then designated as safety-relevant.
What is the message value of C30797?
The drive stores it in r9749, to be interpreted as a decimal number. Value 1 stands for 'Axis not safely referenced' and value 2 for 'User agreement missing'.
How is C30797 acknowledged?
The acknowledgment column of the message table shows, for your converter, how this safety message is acknowledged. Carry out the remedy first: safe automatic referencing, or a user agreement for the new position issued with the softkey.
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 C30xxx group · SINAMICS manuals · Siemens manuals