What it means
C01752 is a safety message from SI Motion P1 in the Control Unit (CU): the safety monitoring channel has identified an error because the reference position that was transferred to the motion is invalid. The drive assigns no automatic reaction to this message, but the message must be acknowledged immediately.
Why it appears
- The reference position that is transferred to the motion is invalid — the safety monitoring channel identifies this as an error.
- Depending on the stored message value, either the reference position cannot be transferred directly (p9573=89), or the reference position cannot be transferred into the motion.
What to check
- Unpark the axis/encoder.
- Acknowledge the encoder fault.
- Deactivate gearbox stage switchover.
- When referencing is performed via the Safety Control Channel (SCC), enable the function "Referencing via SCC" (p9501.27/9301.27).
Reading the message value
- The drive stores the reason in r9749 (SI message value); interpret the value as a decimal number.
- 1: It is not possible to directly transfer the reference position (p9573=89).
- 2: It is not possible to transfer the reference position into the motion.
Parameters the manual names
- r9749 (SI message value): read the stored value as a decimal number to see which of the two causes the drive reports (1 or 2).
- p9573 (SI Motion accept reference position, Control Unit): the message reports value 1 when the reference position cannot be transferred directly with p9573=89.
- p9501 (SI Motion enable safety functions, Control Unit): p9501.27/9301.27 enables the function "Referencing via SCC" — set it when referencing runs via the Safety Control Channel.
Acknowledging and restarting
Remove the cause first, then acknowledge the message immediately; acknowledgment is only possible via POWER ON. For motion monitoring functions integrated in the drive, the message is acknowledged via the Terminal Module 54F (TM54F) or via PROFIsafe.
The same on every family
Every manual that describes C01752 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | IMMEDIATELY (POWER ON) | Safety monitoring channel has identified an error (10) | None | SINAMICS S120, S150 List Manual · p. 2697 |
| G130, G150 | NONE | IMMEDIATELY (POWER ON) | Safety monitoring channel has identified an error (10) | None | SINAMICS G130, G150 List Manual · p. 1477 |
The drives this code lives on
C01752 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 C01752 mean on a SINAMICS drive?
It is a safety message from SI Motion P1 in the Control Unit: the safety monitoring channel has identified an error because the reference position transferred to the motion is invalid.
How do I find out why the reference position is invalid?
Read the message value in r9749 and interpret it as a decimal number. Value 1 means the reference position cannot be transferred directly (p9573=89); value 2 means it cannot be transferred into the motion.
How is C01752 acknowledged?
The message must be acknowledged immediately via POWER ON; motion monitoring functions integrated in the drive acknowledge it via the Terminal Module 54F (TM54F) or via PROFIsafe. Remove the cause first, for example by unparking the axis/encoder or acknowledging an encoder fault.
Which converters report C01752?
The manuals for G130, G150, S120 and S150 describe this message, with the same cause and the same remedy on all of them.
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 C01xxx group · SINAMICS manuals · Siemens manuals