What it means
C01750 is the SI Motion P1 message that reports a hardware fault of the safety-relevant encoder: the encoder that is used for the safety-relevant motion monitoring functions signals a hardware fault. The S120/S150 and G130/G150 list manuals describe the message identically, so the same checks and the same acknowledgment options apply on every family listed here.
Why it appears
- The encoder used for the safety-relevant motion monitoring functions reports a hardware fault.
What to check
- Check the encoder connection.
- Replace the encoder.
- If the encoder of a third-party motor was replaced: copy the serial number of the encoder, using p0440 = 1 or p1990 = 1 — otherwise this safety message cannot be acknowledged.
Reading the message value
- The drive stores the message value in r9749; interpret the value decimal.
- The value contains the encoder status word 1 and the encoder status word 2 that resulted in the message.
Parameters the manual names
- r9749 (SI message value): read the message value of C01750 here and interpret it decimal to see the encoder status words that triggered the message.
- p0440 (copy encoder serial number): set to 1 to copy the serial number of the replaced encoder so that this safety message can be acknowledged.
- p1990 (encoder adjustment — determine angular commutation offset): for this message, p1990 = 1 is named in the remedy as the alternative to p0440 = 1 for copying the encoder serial number.
Acknowledging and restarting
The message is acknowledged with a POWER ON. The manual also describes acknowledgment without a POWER ON: This message can be acknowledged without a POWER ON as follows (safe acknowledgment)
— via the Terminal Module 54F (TM54F), via the onboard F-DI (only CU310-2), via PROFIsafe, or via the machine control panel. After replacing the encoder of a third-party motor, the encoder serial number must be copied first (p0440 = 1 or p1990 = 1) before this safety message can be acknowledged.
The same on every family
Every manual that describes C01750 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Encoder 1 | SINAMICS S120, S150 List Manual · p. 2696 |
| G130, G150 | NONE | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Encoder 1 | SINAMICS G130, G150 List Manual · p. 1476 |
The drives this code lives on
C01750 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 C01750 mean on a SINAMICS drive?
The encoder used for the safety-relevant motion monitoring functions (SI Motion P1) signals a hardware fault. The S120/S150 and G130/G150 manuals describe the message identically.
How is C01750 acknowledged?
With a POWER ON, or without one via safe acknowledgment: Terminal Module 54F (TM54F), onboard F-DI (only CU310-2), PROFIsafe, or the machine control panel.
Why does C01750 stay after I replaced the encoder of a third-party motor?
The serial number of the new encoder must be copied before this safety message can be acknowledged — set p0440 = 1 or p1990 = 1.
What does the message value of C01750 contain?
The value in r9749, interpreted decimal, contains the encoder status word 1 and the encoder status word 2 that resulted in the message.
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