What it means
F01649 reports an internal error in the Safety Integrated (SI) software that runs on the Control Unit — on the G120 the manual words the same condition as an internal error in the Safety Integrated software on processor 1. The error is detected inside the drive's safety software, not in the motor, the cables or the power unit. This fault results in a STOP A that cannot be acknowledged.
The drive writes a fault value into r0949, to be interpreted hexadecimal, which the manual publishes only for internal Siemens troubleshooting. Neighbouring codes in the same group — F01641, F01650, F01651, F01652, F01653, F01655, F01656 and F01657 — are described on their own pages.
Why it appears
- An internal error in the Safety Integrated (SI) software on the Control Unit (CU) has occurred.
- On the G120, the same condition is described as an internal error in the Safety Integrated software on processor 1.
What to check
- Carry out a POWER ON (switch-off/switch-on); on the drives covered by the List Manuals this means for all components.
- Re-commission the Safety Integrated function and carry out a POWER ON again.
- If the fault returns, upgrade the firmware of the Control Unit to a later version — this step is named for the S120/S150 and G130/G150; the G120 manual does not list it.
- Contact Technical Support if the fault persists.
- Replace the Control Unit as the final measure.
Reading the message value
- The drive stores the fault value in r0949; interpret it hexadecimal.
- The manuals give no decoding for this value: it is
Only for internal Siemens troubleshooting
, so quote the number to Technical Support instead of trying to interpret it on site.
Parameters the manual names
- r0949 — fault value: read it for F01649, interpret hexadecimal, and pass it on when you contact Technical Support; the manual publishes no decoding of it for this code.
Acknowledging and restarting
F01649 cannot be cleared with a normal acknowledgement: the fault causes a STOP A that cannot be acknowledged. Switch the power supply off and on again (POWER ON) for all components. If the fault comes back, re-commission the Safety Integrated function and switch off and on once more. Should it still persist, upgrade the Control Unit firmware where the manual names that step, then contact Technical Support and, as the last measure, replace the Control Unit.
What differs between the drive families
Straight from the manuals' own fields — F01649 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Control Unit (CU) | SINAMICS S120, S150 List Manual · p. 2630 |
| G130, G150 | OFF2 | IMMEDIATELY (POWER ON) | Hardware/software error (1) | Control Unit (CU) | SINAMICS G130, G150 List Manual · p. 1435 |
| G120 | OFF2 | IMMEDIATELY (POWER ON) | Hardware/software error (1) | — | SINAMICS G120 · p. 841 |
The drives this code lives on
F01649 is described for G120, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F01649 mean on a SINAMICS drive?
It reports an internal error in the Safety Integrated software on the Control Unit (on the G120: on processor 1). The drive executes a STOP A that cannot be acknowledged.
How do I clear F01649?
Not with a normal acknowledgement: carry out a POWER ON (switch-off/switch-on) for all components. If the fault returns, re-commission the Safety Integrated function and power down and up again; after that the manual names a firmware upgrade, Technical Support and Control Unit replacement.
What is the fault value of F01649 and how do I read it?
It is stored in r0949 and is to be interpreted hexadecimal. The manual states the value serves only for internal Siemens troubleshooting and publishes no decoding, so pass it on to Technical Support.
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