Operating instructions

Vector Control Chassis Type Frequency Converter Faults and Alarms
SIEMENS AG 476 869 4070 76 J AB-74
SIMOVERT MASTERDRIVES Operating Instructions 11-15
Fault
number
Fault Counter-measure
x = 0 = Single converter
x = 1 = Inverter 1
x = 2 = Inverter 2
x = 3 = Inverters 1 and 2
Check that all 3 motor feeder cables and the
motor windings do not have any interruption.
Check the connection between the current
converter and the electronics and check the
current converter itself. Check the correct
input of the rating plate data for the motor
data set valid during the measurement.
F108 MId Unsym
During the DC measurement, the
measurement results for the individual
phases differ significantly. The fault value
indicates which quantity(ies) is (are)
concerned and in which phase the greatest
deviation occurred.
Read out fault value from r949. The digit of
the xth position indicates;
Transverse voltage too high
x = 1 = phase R; x = 2=phase S;
x = 3 = phase T
Dev. stator resistance
(1, 2, 3 as above)
Dev. rotor resistance
(1, 2, 3 as above)
Dev. dead-time compensation
(1, 2, 3 as above)
Deviation valve voltage
(1, 2, 3 as above)
The motor, power section or actual-value
sensing are significantly non-symmetrical.
F109 MId R(L)
The rotor resistance determined during DC
measurement deviates too significantly from
the value which was calculated by the
automatic parameterization from the rated
slip.
• Incorrect input of rated speed or rated
frequency
• Pole pair number incorrect
F110 MId di/dt
During test pulse measurement, the current
has increased significantly faster than was
expected. Thus for the 1
st
test pulse, an
overcurrent condition occurred within the first
half of the minimum switch-on time.
• There may be a short-circuit between two
converter outputs.
• The motor rating plate data have not been
correctly parameterized.
• The motor leakage is too low.
F111 Fault e_Func
A fault has occurred while calculating the
equalization function.
F112 Unsym l_sigma
The individual leakage test results deviate too
significantly.