What it means
F37804 reports a checksum problem on the HF Damping Module: A checksum error (CRC error) has occurred for the HF Damping Module.
The drive trips and the fault must be acknowledged immediately before it will run again. Depending on how the drive is configured, the same condition can also be signalled as an alarm (A) or without any reaction (N); when it appears as an alarm, it triggers neither a reaction nor an acknowledgement.
Why it appears
- A CRC checksum error was detected for the HF Damping Module.
What to check
- Carry out a POWER ON: switch off and switch on all components.
- Upgrade the firmware to a later version.
- If the fault persists, contact Technical Support.
Acknowledging and restarting
Acknowledge the fault immediately — the drive trips (coasts down) and will not restart until the fault is cleared and acknowledged. The first remedy is a POWER ON, i.e. switching all components off and on again; then acknowledge the fault and restart the drive. If the checksum error returns, upgrade the firmware to a later version and contact Technical Support.
The same on every family
Every manual that describes F37804 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 (OFF1, OFF3) | IMMEDIATELY | Hardware/software error (1) | None | SINAMICS S120, S150 List Manual · p. 3269 |
The drives this code lives on
F37804 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does fault F37804 mean on a SINAMICS S120 or S150?
It reports a checksum error (CRC error) for the HF Damping Module. The drive trips and the fault must be acknowledged immediately.
How do I clear F37804?
Switch all components off and on again (POWER ON) and acknowledge the fault. If it occurs again, upgrade the firmware to a later version and then contact Technical Support.
Does F37804 always trip the drive?
No. Depending on the drive configuration, the same condition can also be output as an alarm (A) or with no reaction (N); as an alarm it triggers neither a reaction nor an acknowledgement.
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