What it means
F01003 is raised when a memory area in the drive is accessed that does not return a "READY". The message is raised in the Control Unit (CU). The fault value that accompanies it is stored in r0949 and must be interpreted hexadecimal; the manuals designate it "Only for internal Siemens troubleshooting", so no decoding is published for the user.
Why it appears
- The drive accessed a memory area that does not return a "READY".
- The G120XA entry additionally records for this fault:
An internal software error has occurred.
What to check
Carry out a POWER ON (switch-off/switch-on) for all components.
This is the first remedy step in every manual that describes the code.- The G120XA documentation additionally instructs, in its cross-reference to N01004 (Internal software error), to read out the diagnostics parameter r9999.
- Contact Technical Support.
Reading the message value
- The drive writes the fault value to r0949; the manual specifies: interpret hexadecimal.
- No decoding of the value is published — it is intended "Only for internal Siemens troubleshooting".
Parameters the manual names
- r0949 (fault value) — holds the value belonging to this message; interpret hexadecimal. Its content is meant only for internal Siemens troubleshooting.
- r9999 (software error internal supplementary diagnostics) — read this diagnostics parameter out when following the G120XA remedy reference (N01004), before contacting Technical Support.
Acknowledging and restarting
The drive coasts down and must be acknowledged before it will start; the fault is acknowledged immediately. Acknowledging the message does not replace the remedy the manuals prescribe: carry out the POWER ON (switch-off/switch-on) of all components described above and contact Technical Support.
What differs between the drive families
Straight from the manuals' own fields — F01003 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G120XA | OFF2 NONE | IMMEDIATELY NONE | — | — | SINAMICS G120XA PN converter · p. 1097 |
| G130, G150 | OFF2 | IMMEDIATELY | Hardware/software error (1) | Control Unit (CU) | SINAMICS G130, G150 List Manual · p. 1370 |
| S120, S150 | OFF2 | IMMEDIATELY | Hardware/software error (1) | Control Unit (CU) | SINAMICS S120, S150 List Manual · p. 2556 |
| G120 | OFF2 | IMMEDIATELY | Hardware/software error (1) | — | SINAMICS G120 · p. 820 |
The drives this code lives on
F01003 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 SINAMICS fault F01003 mean?
A memory area was accessed that does not return a "READY". The manuals that name the component assign the message to the Control Unit (CU).
How do I clear F01003?
Carry out a POWER ON (switch-off/switch-on) for all components and then contact Technical Support. The G120XA documentation additionally directs you to read out the diagnostics parameter r9999.
Can I simply acknowledge F01003 and restart the drive?
The fault is acknowledged immediately, but the manuals prescribe more than acknowledgement: the POWER ON of all components and contact with Technical Support are part of the remedy.
What is in the F01003 fault value in r0949?
The value must be interpreted hexadecimal and carries no published decoding, because the manuals mark it "Only for internal Siemens troubleshooting".
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