What it means
F49154 is raised when the liquid leakage monitoring function of the cooling unit has responded — the drive has detected leaking fluid via the input terminal (Terminal Module) used to monitor it. Depending on the drive's configuration, the same condition can also be issued as alarm A49154. For that case the manual adds a caution: If this fault is reparameterized as an alarm, then using other monitoring functions it must be ensured that when cooling water is lost, the drive is switched off!
For the current state of the cooling unit, the manual refers to the cooling unit status word r0267.
Why it appears
- The liquid leakage monitoring function has responded — a leak has been detected in the cooling circuit via the input that monitors for leaking fluid.
What to check
- Check the cooling system for leaks in the cooling circuit.
- Check the wiring of the input terminal (Terminal Module) used to monitor leaking fluid.
Acknowledging and restarting
Once the leak has been found and repaired and the leak-monitoring wiring checked, acknowledge the fault immediately and restart the drive. If the monitoring has been reparameterized as alarm A49154 instead, the drive does not react and there is nothing to acknowledge — but then the caution quoted above applies: other monitoring functions must ensure the drive is switched off when cooling water is lost.
What differs between the drive families
Straight from the manuals' own fields — F49154 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | Auxiliary unit faulted (20) | None | SINAMICS S120, S150 List Manual · p. 3288 |
| G130, G150 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | None | SINAMICS G130, G150 List Manual · p. 1932 |
The drives this code lives on
F49154 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 F49154 mean on a SINAMICS drive?
The cooling unit's liquid leakage monitoring function has responded: the drive has detected leaking fluid in the cooling circuit. The current state of the cooling unit can be read from the status word r0267.
How do I fix and reset F49154?
Check the cooling system's cooling circuit for leaks, then check the wiring of the Terminal Module input used for leak monitoring. After the cause is rectified, acknowledge the fault immediately and restart the drive.
Why does F49154 appear as alarm A49154 instead of a fault?
The same leakage condition can be issued as a fault or as an alarm, depending on the drive's configuration. As an alarm the drive does not react and no acknowledgement is required, but other monitoring functions must then switch the drive off when cooling water is lost.
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 F49xxx group · SINAMICS manuals · Siemens manuals