What it means
The converter's cooling unit monitors the conductivity of the cooling liquid. When the measured conductivity rises above the selected fault threshold p0269[2], the drive trips F49151 and coasts down. The manual describes this fault the same way for the G130, G150, S120 and S150 converter families, and no additional message value is decoded for it.
Why it appears
- The conductivity of the cooling liquid has exceeded the selected fault threshold p0269[2].
What to check
- Check the device that de-ionizes the cooling liquid.
Parameters the manual names
- p0269[2] — the selected fault threshold for the cooling liquid conductivity; this fault is raised as soon as the value set here is exceeded.
- p0261 — Cooling unit starting time 2 (RKA start time 2), a cooling unit parameter the manual cross-references for this fault.
- p0262 — Cooling unit fault conductivity delay time (RKA cond t_del), the delay time the manual associates with this conductivity fault.
- p0266 — BI: Cooling unit feedback signals signal source (Cool_unit fdbk s_s), which selects the signal source from which the drive takes the cooling unit feedback signals.
Acknowledging and restarting
The drive coasts down when this fault trips, and the fault must be acknowledged immediately before the drive will start again. Deal with the de-ionization device of the cooling liquid first, since that is the remedy the manual names for this fault, and then acknowledge it.
The same on every family
Every manual that describes F49151 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. 3288 |
| G130, G150 | OFF2 | IMMEDIATELY | Auxiliary unit faulted (20) | None | SINAMICS G130, G150 List Manual · p. 1931 |
The drives this code lives on
F49151 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 F49151 mean in SINAMICS G130, G150, S120 and S150?
The conductivity of the cooling liquid has exceeded the selected fault threshold p0269[2]. The drive coasts down and the fault must be acknowledged immediately.
How do I clear F49151?
Check the device that de-ionizes the cooling liquid and then acknowledge the fault immediately; the drive accepts a new start command only after the acknowledgement.
Which parameters belong to fault F49151?
The fault threshold p0269[2], the fault conductivity delay time p0262, the feedback signal source p0266 and the cooling unit starting time 2 p0261.
Does F49151 also appear as an alarm?
No. The manuals describe F49151 only as a fault; no alarm variant is given for this code.
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