What it means
F01954 means that the synchronization between the basic clock cycle, the DRIVE-CLiQ clock cycle and the application clock cycle was started but was not able to be completed successfully — the manual cites switch-on as a typical situation. While the fault is active the drive coasts down (OFF2), and the fault must be acknowledged immediately with a POWER ON.
Why it appears
- The synchronization between the basic clock cycle, the DRIVE-CLiQ clock cycle and the application clock cycle was started and could not be completed — for example after switch-on.
- A fault on DRIVE-CLiQ is also possible; the manual's remedy begins by asking to remove its cause.
What to check
- Remove the cause of a possible DRIVE-CLiQ fault.
- Initiate a new synchronization, for example in one of the following ways:
- Remove the PROFIBUS master and re-insert it again.
- Restart the PROFIBUS master.
- Switch the Control Unit off and switch it on again.
- Carry out a Control Unit hardware reset (RESET button, p0972).
- Carry out a parameter reset and download the saved parameters (p0009 = 30, p0976 = 2, 3).
Reading the message value
- The drive stores the fault value in r0949; interpret it as a decimal number.
- The manual prints no decoding of the value: it is only for internal Siemens troubleshooting.
Parameters the manual names
- r0949 — fault value: holds the fault value of F01954; the manual specifies decimal interpretation and states the content is only for internal Siemens troubleshooting.
- p0972 — drive unit reset: performs the drive unit reset that belongs to the Control Unit hardware reset via the RESET button.
- p0009 — device commissioning parameter filter: set to 30 as part of the parameter reset step.
- p0976 — reset and load all parameters: set to 2 or 3 to reset and download the saved parameters.
Acknowledging and restarting
Acknowledge the fault immediately. For this fault acknowledgement is only possible with a POWER ON, so switch the power supply of the drive off and back on. If the synchronization fails again after powering up, remove the cause of a possible DRIVE-CLiQ fault and initiate a new synchronization using one of the methods listed above.
The same on every family
Every manual that describes F01954 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | OFF2 | IMMEDIATELY (POWER ON) | Internal (DRIVE-CLiQ) communication error (12) | None | SINAMICS G130, G150 List Manual · p. 1496 |
| S120, S150 | OFF2 | IMMEDIATELY (POWER ON) | Internal (DRIVE-CLiQ) communication error (12) | None | SINAMICS S120, S150 List Manual · p. 2720 |
The drives this code lives on
F01954 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 F01954 mean on a SINAMICS drive?
The Control Unit started the synchronization between the basic clock cycle, the DRIVE-CLiQ clock cycle and the application clock cycle, but it could not be completed — for example after switch-on.
How do I fix F01954?
Remove the cause of a possible DRIVE-CLiQ fault, then initiate a new synchronization — for example by restarting the PROFIBUS master, switching the Control Unit off and on, a hardware reset via the RESET button (p0972), or a parameter reset (p0009 = 30, p0976 = 2, 3).
How is fault F01954 acknowledged?
Immediately, and only with a POWER ON: switch the power supply off and back on. While the fault is active the drive coasts down (OFF2).
What is the fault value of F01954 in r0949?
The drive stores the value in r0949, interpreted decimal. The manual gives no decoding — the value is 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