What it means
F52960 is reported by the cavitation protection of the SINAMICS G120XA when conditions exist for cavitation damage. Cavitation damage is damage to a pump in a pumping system that occurs when the fluid is not flowing sufficiently; it can lead to heat build-up and subsequent damage to the pump. The drive switches the motor off (OFF2, the motor coasts down), and the fault must be acknowledged before the drive will run again.
Why it appears
- The cavitation protection has established that conditions exist for cavitation damage in the pumping system.
- Cavitation occurs when the fluid is not flowing sufficiently through the pump; the resulting heat build-up can damage the pump.
What to check
- Determine whether cavitation is actually occurring in the system.
- If cavitation is not occurring, reduce the cavitation protection threshold p29626, or increase the cavitation protection delay.
- Make sure that the sensor feedback is working.
Parameters the manual names
- p29626 — cavitation protection threshold: if the drive trips F52960 although no cavitation is occurring in the system, reduce this threshold.
Acknowledging and restarting
The drive switches the motor off (OFF2, the motor coasts down). Acknowledge the fault immediately; only after the acknowledgment has been carried out can the drive be started again.
The same on every family
Every manual that describes F52960 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G120XA | OFF2 | IMMEDIATELY | — | — | SINAMICS G120XA PN converter · p. 1169 |
Questions technicians ask
What does fault F52960 mean on a SINAMICS G120XA?
The cavitation protection has found that conditions exist for cavitation damage — damage to a pump in a pumping system when the fluid is not flowing sufficiently, which can build up heat and subsequently damage the pump.
How do I clear fault F52960?
First check whether cavitation is actually occurring. If it is not, reduce the cavitation protection threshold p29626 or increase the cavitation protection delay, and make sure the sensor feedback is working.
What is p29626 used for with F52960?
p29626 is the cavitation protection threshold. When the drive raises F52960 although no cavitation is occurring, you reduce this threshold so the protection stops responding unnecessarily.
Can I restart the drive straight away after F52960?
The drive coasts the motor down with OFF2, and the fault must be acknowledged immediately. Only after acknowledgment can the drive be started again.
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 F52xxx group · SINAMICS manuals · Siemens manuals