What it means
The drive raises F37003 when the HF Damping Module does not manage to establish its damping voltage. At the moment of the trip the drive stores the damping voltage it had reached as the fault value in r0949, in millivolts, so the value shows how far the voltage build-up had got before it failed.
Why it appears
- The damping voltage could not be established on the HF Damping Module; the manual names no other cause for this code.
What to check
- Check the wiring of the HF Damping Module.
- While doing so, watch r5171 — the actual HF damping voltage — to see whether the voltage is present and builds up again after your correction.
Reading the message value
- r0949 — interpret the value as a decimal number: it contains the damping voltage at the moment of the fault, given in millivolts (mV).
Parameters the manual names
- r0949 — the fault value for this code; read it as a decimal to see the damping voltage in mV that was reached when the trip occurred.
- r5171 — the actual HF damping voltage (CO); use it to follow live whether the damping voltage is established while you check the module wiring.
Acknowledging and restarting
The trip de-energises the drive at once, so the motor coasts to a standstill. Once the HF Damping Module wiring has been checked and the cause removed, acknowledge the fault immediately; only then does the drive accept a new start command.
The same on every family
Every manual that describes F37003 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY | General drive fault (19) | None | SINAMICS S120, S150 List Manual · p. 3261 |
The drives this code lives on
F37003 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F37003 mean on a SINAMICS S120 or S150?
It means the HF Damping Module could not establish its damping voltage, and the drive therefore tripped. The fault value in r0949 shows, in millivolts, the damping voltage present at the moment of the fault.
How do I clear F37003?
Check the HF Damping Module wiring, then acknowledge the fault immediately. You can observe r5171, the actual HF damping voltage, to confirm that the voltage now builds up.
Which parameter holds the fault value for F37003?
r0949. Read it as a decimal number — for this fault it contains the damping voltage in mV that had been reached when the drive tripped.
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 F37xxx group · SINAMICS manuals · Siemens manuals