What it means
The drive reports this fault under the title 'SI P1 (CU): STO inputs for power units connected in parallel different'. It is raised by the drive-integrated 'Safety Integrated' (SI) function on the Control Unit (CU): this function ANDs the STO (Safe Torque Off) inputs of power units connected in parallel, and when it identifies that these inputs are in different states, it initiates a STOP F and outputs F01612. As a result of this fault, once the transition time parameterized in p9658 has expired, the drive additionally outputs F01600 (SI CU: STOP A initiated).
Why it appears
- The drive-integrated 'Safety Integrated' function on the Control Unit has identified different states of the AND'ed STO inputs for power units connected in parallel and has initiated a STOP F.
What to check
- Check the tolerance time for the SGE changeover and, if required, increase the value (p9650).
- Check the wiring of the safety-relevant inputs (SGE), in particular for contact problems.
Reading the message value
- The drive stores the fault cause in r0949 as a binary value ('Fault cause: %1 bin').
- The value is the binary image of the digital inputs of the Control Unit that are used as the signal source for the 'Safe Torque Off' function.
Parameters the manual names
- r0949 — fault value: read here the binary image of the CU digital inputs that serve as the signal source for the Safe Torque Off function.
- p9650 — SI SGE changeover discrepancy time (Control Unit): the tolerance time for the SGE changeover; increase it if required.
- p9658 — SI transition time STOP F to STOP A (Control Unit): when this parameterized transition has expired, the drive outputs F01600 (SI CU: STOP A initiated) as a result of this fault.
Acknowledging and restarting
The fault must be acknowledged immediately; the manual specifies POWER ON as the acknowledgement, i.e. the drive's power supply must be switched off and on again before the fault is cleared and the drive can be restarted. Note that because the drive outputs F01600 (SI CU: STOP A initiated) after the transition time p9658 has expired, that fault may additionally be present on the display.
The same on every family
Every manual that describes F01612 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE (OFF1, OFF2, OFF3) | IMMEDIATELY (POWER ON) | Safety monitoring channel has identified an error (10) | None | SINAMICS S120, S150 List Manual · p. 2625 |
| G130, G150 | NONE (OFF1, OFF2, OFF3) | IMMEDIATELY (POWER ON) | Safety monitoring channel has identified an error (10) | None | SINAMICS G130, G150 List Manual · p. 1430 |
The drives this code lives on
F01612 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 F01612 mean on a SINAMICS drive?
The drive-integrated Safety Integrated function on the Control Unit has detected different states of the AND'ed STO (Safe Torque Off) inputs for power units connected in parallel and has initiated a STOP F.
Why does F01600 appear after F01612?
As a result of F01612, the drive outputs F01600 (SI CU: STOP A initiated) once the transition time parameterized in p9658 has expired.
How do I fix fault F01612?
Check the tolerance time for the SGE changeover and increase it if required (p9650), then check the wiring of the safety-relevant inputs (SGE) for contact problems. The fault must then be acknowledged immediately, which requires a POWER ON.
Where can I read the fault value of F01612?
In r0949, interpreted as a binary value. It shows the binary image of the Control Unit digital inputs that are used as the signal source for the Safe Torque Off function.
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