Siemens SINAMICS V20

Faults and alarms
9.1 Faults
SINAMICS V20 Converter
340 Operating Instructions, 10/2019, A5E34559884-012
Fault
Cause
Remedy
F395
Acceptance
test/confirmation
pending
This fault occurs after a startup
clone. It can also be caused by a
faulty read from the EEPROM, see
F51 for more details.
A startup clone could have
changed and might not match the
application.
This parameter set needs to be
checked before the converter can
start a motor.
• r0949 = 3/4: Converter data
change
• r0949 = 5: Startup clone via an
SD card has been performed
• r0949 = 10: Previous startup
clone was aborted
The current parameter set needs to be checked and confirmed by
clearing the fault.
F410
Cavitation protec-
tion failure
Conditions exist for cavitation
damage. Cavitation damage is
damage caused to a pump in
pumping systems when the fluid is
not flowing sufficiently. This can
lead to heat build up and subse-
quent damage to the pump.
If cavitation is not occurring, reduce the cavitation threshold
P2361, or increase the cavitation protection delay. Ensure sensor
feedback is working.
F452
Load monitoring
trip
Load conditions on motor indicate
belt failure or mechanical fault.
• r0949 = 0: trip low torque/speed
• r0949 = 1: trip high
torque/speed
Check the following:
• No breakage, seizure or obstruction of converter train.
• Apply lubrication if required.
If using an external speed sensor, check the following parameters
for correct function:
- P2192 (delay time for permitted deviation)
- P2182 (threshold frequency f1)
- P2183 (threshold frequency f2)
- P2184 (threshold frequency f3)
If using a specific torque/speed range, check parameters:
- P2182 (threshold frequency 1)
- P2183 (threshold frequency 2)
- P2184 (threshold frequency 3)
- P2185 (upper torque threshold 1)
- P2186 (lower torque threshold 1)
- P2187 (upper torque threshold 2)
- P2188 (lower torque threshold 2)
- P2189 (upper torque threshold 3)
- P2190 (lower torque threshold 3)
- P2192 (delay time for permitted deviation)