Siemens SINAMICS S120 Function Manual page 155

Commissioning
Parameter p1401.6 =1 (flux control configuration) is set in order to activate quick
magnetization.
This setting initiates the following sequence during motor starting:
● The field-producing current setpoint jumps to its limit value: 0.9*r0067 (I
● The flux increases as fast as physically possible with the specified current.
● The flux setpoint r0083 is made to follow accordingly.
● As soon as the flux threshold value programmed in p1573 is reached (default 100%, min.:
Note
The flux threshold value set in parameter p1573 is effective only if the actual flux during
magnetization reaches the value programmed in p1573 before the timer set in p0346 runs
down.
● The flux is increased further until the flux setpoint in p1570 has been reached.
● The field-producing current setpoint is reduced by means of a flux controller with P gain
Notes
When quick magnetization is selected (p1401.6 = 1), smooth starting is deactivated internally
and alarm A07416 displayed.
When the stator resistance identification function is active (see p0621 "Identification of stator
resistance after restart") is active, quick magnetization is deactivated internally and alarm
A07416 displayed.
The parameter does not work when combined with the "flying restart" function (see p1200),
i.e. flying restart is performed without quick magnetization.
Alarms and fault messages
A07416 Drive: Flux controller configuration
When a function controlled by parameter p1401(flux controller configuration) and p0621
(identification of stator resistance after restart) is activated, the system checks whether any
other incompatible function is already selected. If this is the case, alarm A07416 is displayed
with the number of the parameter which is incompatible with the configuration parameter, i.e.
p0621 or p1401.
As these are data-set-dependent parameters (p1401 is DDS-dependent and p0621 MDS-
dependent), the number of the data set is also specified in the fault value.
The flux control configuration (p1401) settings are inconsistent.
Fault codes:
1 = quick magnetization (p1401 bit 6) and smooth starting (p1401 bit 0)
2 = quick magnetization (p1401 bit 6) and flux build-up control (p1401 bit 2)
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
10% and max. 200%), excitation ceases and the speed setpoint is enabled. The flux
threshold value must not be set too low for a large load because the torque-producing
current is limited during magnetization.
(p1590) and the parameterized smoothing factor (p1616).
4.14 Quick magnetization for induction motors
Vector control
).
max
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