What it means
SINAMICS raises F49156 when the temperature of the cooling liquid at the intake of the power unit has exceeded the fault threshold that applies to that unit. The threshold is not a universal figure: it is taken from the power unit's hardware description data and is, for example, 52 ... 55 °C. The manuals that describe this code for the G130/G150 and for the S120/S150 describe it in the same words, so the explanation below applies across those families.
Why it appears
- The temperature of the cooling liquid at the intake has exceeded the fault threshold specified for the power unit.
What to check
- Check the cooling system.
- Check the ambient conditions.
Acknowledging and restarting
The drive coasts down (OFF2) when this fault trips and will not restart until the fault has been acknowledged. Once the cooling problem has been remedied, acknowledge the fault immediately and restart the drive in the normal way. The manual defines no additional reset or power-up procedure for this code.
The same on every family
Every manual that describes F49156 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | None | SINAMICS S120, S150 List Manual · p. 3289 |
| G130, G150 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | None | SINAMICS G130, G150 List Manual · p. 1932 |
The drives this code lives on
F49156 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 SINAMICS fault F49156 mean?
It reports that the cooling liquid intake temperature has exceeded the fault threshold specified for the power unit. The drive coasts down (OFF2) when the fault trips.
At what cooling liquid temperature does F49156 trigger?
The threshold depends on the power unit and is stored in its hardware description data. As an example, the manuals give 52 ... 55 °C.
How do I fix and reset fault F49156?
Check the cooling system and the ambient conditions. Once the cause has been remedied, acknowledge the fault immediately — the drive will not restart until it has been acknowledged.
Which SINAMICS drives can report F49156?
The code is described for SINAMICS G130, G150, S120 and S150. Other cooling-unit conditions of the same cooling unit are reported under their own codes, such as F49150 to F49155.
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