Faults and Alarms
List of faults and alarms
3-1530
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
F07085
Drive: Open-loop/closed-loop control parameters changed
Drive object:
A_INF, B_INF, SERVO, S_INF, VECTOR
Reaction:
NONE
Acknowledge:
IMMEDIATELY (POWER ON)
Cause:
Parameters of the open-loop/closed-loop control had to be changed as they exceeded dynamic limits as a result of
other parameters.
Fault value (r0949, interpret decimal):
The fault value includes the modified parameter number.
340: The motor and control parameters were automatically calculated (p0340 = 1), because the vector control was
subsequently activated as configuration (r0108.2).
See also: p0640 (Current limit), p1082 (Maximum speed), p1300 (Open-loop/closed-loop control operating mode),
p1800 (Pulse frequency)
Remedy:
It is not necessary to change the parameters as they have already been correctly limited.
F07086
Units changeover: Parameter limit violation due to reference value change
Drive object:
A_INF, B_INF, SERVO, S_INF, TM41, VECTOR
Reaction:
NONE
Acknowledge:
IMMEDIATELY
Cause:
A reference parameter was changed in the system. This resulted in the fact that for the parameters involved, the
selected value was not able to be written in the per unit notation (cause: e.g. the steady-state minimum/maximum
limit or that defined in the application was violated). The values of the parameters were set to the corresponding vio-
lated minimum/maximum limit or to the factory setting.
Fault value (r0949, parameter):
Diagnostics parameter r9450 to display the parameters that were not able to be re-calculated.
See also: p0304 (Rated motor voltage), p0305 (Rated motor current), p0310 (Rated motor frequency), p0596 (Ref-
erence quantity, technological units), p2000 (Reference frequency), p2001 (Reference voltage), p2002 (Reference
current), p2003 (Reference torque), r2004 (Reference power)
Remedy:
Check the adapted parameter value and if required correct.
See also: r9450 (Displays para. that cannot be calc. after int. ref. value change)
F07087
Drive: Sensorless operation not possible for the selected pulse frequency
Drive object:
SERVO
Reaction:
NONE
Acknowledge:
IMMEDIATELY
Cause:
Sensorless operation is not possible for the selected pulse frequency (p1800).
Sensorless operation is activated under the following conditions:
- the changeover speed for sensorless operation (p1404) is less than the maximum speed (p0322).
- a control type with sensorless operation has been selected (p1300).
- encoder faults of the motor encoder result in a fault response with sensorless operation (p0491).
See also: p0491 (Motor encoder fault response ENCODER), p1300 (Open-loop/closed-loop control operating
mode), p1404 (Sensorless operation changeover speed), p1800 (Pulse frequency)
Remedy:
Increase the pulse frequency (p1800).
Note:
In sensorless operation, the pulse frequency must be at least as high as half the current controller clock cycle
(1/p0115[0]).
