Charging; Synchronization - ABB ACS 600 User Manual

Charging

Synchronization

ACA 635 IGBT Supply Sections
The parameters concerning the identification routine are presented
below.
Code Parameter
99.07 LINE SIDE ID RUN
99.08 AUTO LINE ID RUN
2.07 150.02 DC REF INITIALIZ
150.01 FLUX REF USED
NOM
115.03 50 HZ IDENTIFICA
115.04 60 HZ IDENTIFICA
115.12 INITIALIZING DONE
Fault
9.11 bit 9 NET VOLT FLT
When the control has received a start command, the charging
contactor is closed. After the DC link voltage is high, the main
contactor/breaker is closed and the charging contactor is opened. This
procedure is controlled by the NAMC board via NIOC board digital
outputs R01 to R03.
If the charging is not completed, i.e. the DC link voltage has not
exceeded the value of Parameter 30.12 DC UNDERVOLT TRIP or the
charging current is not below 5% of I
(Parameter 9.11 SUPPLY FAULT WORD bit 0 CHARGING FLT).
The ISU is synchronized to the network by two three-phase short-
circuits of 200 m s in length at an interval of 6 ms. On the basis of the
short-circuit current, the ISU can identify the phase order of the supply
network and the starting point for the flux/voltage vector. The phase
order of the supply can be changed without performing the
identification routine again. The ISU must be stopped during a phase
order change.
The synchronization can also be done with only one 200 m s short-
circuit by Parameter 99.06 FAST SYNC selection YES. Note: In this
case no phase order check is performed.
If a synchronization trial fails, the ISU makes up to 9 additional trials.
One reason for a failed synchronization is too low a short-circuit current
due to the high impedance of the network.
Chapter 6 – Firmware Description
Unit Description
Manual identification run
Automatic identification run
V Nominal DC reference
% Nominal flux reference
50 Hz network frequency (status)
60 Hz network frequency (status)
Initialization completed (status)
Supply voltage is not valid
, a fault is set
1base10s/60s
6-5