Siemens SINAMICS V20 Operating Instructions Manual page 320

Faults and alarms
9.1 Faults
Viewing inverter status at fault
Fault code list
Fault
F1
Overcurrent
F2
Overvoltage
320
Cause
Motor power (P0307) does not cor-
•
respond to the inverter power
(r0206).
Motor lead short circuit
•
Earth faults
•
r0949 = 0: Hardware reported
r0949 = 1: Software reported
r0949 = 22: Hardware reported
Main supply voltage too high
•
Motor is in regenerative mode
•
r0949 = 0: Hardware reported
r0949 = 1 or 2: Software reported
Remedy
Check the following:
Motor power (P0307) must correspond to in-
•
verter power (r0206).
Cable length limits must not be exceeded.
•
Motor cable and motor must have no short-
•
circuits or earth faults.
Motor parameters must match the motor in use.
•
Value of stator resistance (P0350) must be
•
correct.
Motor must not be obstructed or overloaded.
•
Increase ramp-up time (P1120)
•
Reduce starting boost level (P1312)
•
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; other-
wise, apply braking resistor.
Operating Instructions, 11/2016, A5E34559884-006
SINAMICS V20 Inverter