Siemens SINAMICS V20 Operating Instructions Manual page 337

Fault Cause
F2
Main supply voltage too high
•
Overvoltage
Motor is in regenerative mode
•
r0949 = 0: Hardware reported
r0949 = 1 or 2: Software reported
F3
Main supply failed.
•
Undervoltage
Shock load outside specified
•
limits.
r0949 = 0: Hardware reported
r0949 = 1 or 2: Software reported
F4
Converter overloaded
•
Converter over-
Ventilation inadequate
•
temperature
Pulse frequency too high
•
Surrounding temperature too
•
high
Fan inoperative
•
F5
Converter overloaded.
•
Converter I t
2
Load cycle too demanding.
•
Motor power (P0307) exceeds
•
converter power capability
(r0206).
F6
Load at start-up is too high
•
Chip temperature
Load step is too high
•
rise exceeds
Ramp-up rate is too fast
•
critical levels
F11
Motor overloaded
•
Motor over-
temperature
This fault may occur if small
•
motors are used and run at a
frequency below 15 Hz, even
though the motor temperature
is within limits.
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
Remedy
Check the following:
Supply voltage (P0210) must lie within limits indicated on
•
rating plate.
Ramp-down time (P1121) must match inertia of load.
•
Required braking power must lie within specified limits.
•
Vdc controller must be enabled (P1240) and parameterized properly.
•
Note:
Regenerative mode can be caused by fast ramp downs or if the
motor is driven by an active load.
Higher inertia requires longer ramp times; otherwise, apply brak-
ing resistor.
Check supply voltage.
Check the following:
Load or load cycle too high?
•
Motor power (P0307) must match converter power (r0206)
•
Pulse frequency must be set to default value
•
Surrounding temperature too high?
•
Fan must turn when converter is running
•
Check the following:
Load cycle must lie within specified limits.
•
Motor power (P0307) must match converter power (r0206)
•
Note: F5 cannot be cleared until the converter overload utilization
(r0036) is lower than the converter I
Check the following:
Load or load step too high?
•
Increase ramp-up time (P1120).
•
Motor power (P0307) must match converter power (r0206).
•
Use setting P0290 = 0 or 2 for preventing F6.
•
Check the following:
Load or load step too high?
•
Motor nominal overtemperatures (P0626 - P0628) must be correct
•
Motor temperature warning level (P0604) must match
•
Check the following:
Motor current is not in excess of the motor nominal current as
•
indicated by the motor rating plate
Physical temperature of the motor lies within limits
•
If these two conditions are satisfied, then set parameter P0335 = 1.
Faults and alarms
9.1 Faults
t warning (P0294).
2
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