Siemens SIMOVERT Master Drives 6SE70 Betriebsanleitung Seite 316

Start-Up
Die Anwahl "Stromkreisidentifikation" kann im Zustand "Einschaltbereit" (009) erfolgen.
Ablauf:
⇓
P052 = 21
⇓
P-Taste
⇓
Einschalten der Einspeiseeinheit
During circuit identification the trigger pulses are released, the power supply unit draws current and the link
circuit is partially charged:
Initially the control angle is reduced starting from 120 degrees until the link circuit voltage reaches 12.5 % of
1.35 * mains supply voltage, after which a single large current crest is generated by triggering a thyristor pair
at a control angle of 92 degrees. The current crest generated has a current conduction angle of approx. 40
degrees, the peak value depends on the inductance of the incoming feeder circuit.
During circuit identification the motoring plant current limit P160 is not effective. The sum of the rated currents
of the inverters connected to the power supply unit should be appreciably less than the rated current of the
power supply unit.
⇓
The operating display appears. Circuit identification takes about 10 s with a discharged DC link
capacitor. The following parameters are set automatically:
⇓
On completion of the function, "Ready to switch on" (009) appears in the display.
If a fault message occurs during circuit identification, the cause of the fault must be eliminated and the function
repeated (see Section 7.1).
Circuit identification for 12-pulse mode must be carried out in succession on the 12-pulse master and on the 12-
pulse slave units (see Section 3.8.5).
4-42
ENGLISH
Funktionsanwahl Stromkreisidentifikation
Es erscheint die Betriebsanzeige:
Die Einspeiseeinheit muss innerhalb von 20s eingeschaltet werden, sonst
erfolgt die Störmeldung F091 (Störwert 4).
NOTE
P140 Circuit resistance of the rectifier bridge
P141 Circuit inductance of the rectifier bridge
P144 Capacitance of the DC link
P310 Proportional gain of current controller
P311 Integral-action time of current controller
P313 Proportional gain of DC link voltage controller
NOTE
Siemens AG 6SE7087-6AK85-0AA0
Common Rectifier Operating Instructions
09.02