What it means
F33875 means that the DRIVE-CLiQ component involved for encoder 3 (Sensor Module Encoder 3) reports to the Control Unit over DRIVE-CLiQ that its supply voltage has failed. The manuals give exactly one fault cause for this: 9 (= 09 hex) — the power supply voltage for the components has failed. Depending on how the drive is configured, the same condition can also be signaled as an alarm (A) or without any reaction (N).
Why it appears
- The DRIVE-CLiQ communication from the DRIVE-CLiQ component involved (Sensor Module Encoder 3) to the Control Unit signals that the supply voltage has failed — fault cause 9 (= 09 hex): the power supply voltage for the components has failed.
What to check
- Carry out a POWER ON (switch-off/switch-on).
- Check the power supply voltage wiring for the DRIVE-CLiQ component (interrupted cable, contacts, ...).
- Check the dimensioning of the power supply for the DRIVE-CLiQ component.
Reading the message value
- The message value combines the component number and the fault cause; the drive stores it as fault value in r0949 or as alarm value in r2124.
- Coding:
0000yyxx hex: yy = component number, xx = error cause
- For this fault the error cause is 9 (= 09 hex), i.e. the failed power supply voltage for the components.
Parameters the manual names
- r0949 — fault value: read the coded component number and fault cause of the encoder 3 supply failure here.
- r2124 — alarm value: holds the same coding when the condition is raised as an alarm instead of a fault.
Acknowledging and restarting
The fault must be acknowledged immediately before the drive will restart; the POWER ON prescribed in the remedy (switch-off/switch-on) is part of clearing it. When the same condition is configured as an alarm (A) or without reaction (N), no acknowledgment is required.
What differs between the drive families
Straight from the manuals' own fields — F33875 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Servo: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) Vector: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) Hla: OFF1 (NONE, OFF2, OFF3) | IMMEDIATELY | Supply voltage fault (undervoltage) (3) | Sensor Module Encoder 3 | SINAMICS S120, S150 List Manual · p. 3173 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3) | IMMEDIATELY | Supply voltage fault (undervoltage) (3) | Sensor Module Encoder 3 | SINAMICS G130, G150 List Manual · p. 1844 |
The drives this code lives on
F33875 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 F33875 in SINAMICS mean?
The DRIVE-CLiQ component for encoder 3 (Sensor Module Encoder 3) reports to the Control Unit over DRIVE-CLiQ that its supply voltage has failed. The fault cause is 9 (= 09 hex): the power supply voltage for the components has failed.
How do I clear F33875?
Carry out a POWER ON (switch-off/switch-on), then check the power supply voltage wiring of the DRIVE-CLiQ component for interrupted cables or poor contacts and check the dimensioning of its power supply. The fault must be acknowledged immediately.
Where do I read the component number and fault cause of F33875?
In the message value, stored as fault value in r0949 or as alarm value in r2124. It is coded 0000yyxx hex, where yy is the component number and xx is the error cause.
Can F33875 also appear as an alarm?
Yes — depending on the drive's configuration, the same condition can also be signaled as an alarm (A) or without any reaction (N). In those cases no acknowledgment is required.
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 F33xxx group · SINAMICS manuals · Siemens manuals