Chapter 6 – Firmware Description
6-12
ACA 635 IGBT Supply Sections
DC References
The ISU control has two reference values for the DC voltage control:
•
Parameter 23.01 DC VOLT REF (user given reference)
•
Parameter 2.05 DC REF Q-CTRL.
DC reference chain is initialized during synchronization. The value of
Par. 2.07 DC REF INITIALIZ is copied to parameters 2.05 DC REF Q-
CTRL and 2.06 DC REF RAMP.
Reference Selection
A block diagram of reference selection (Parameter 23.01 DC VOLT
REF / Parameter 2.05 DC REF Q-CTRL) after synchronization is
shown below.
In normal mode the ramped value of Parameter 23.01 DC VOLT REF
is selected, if it is higher than Parameter 2.05 DC REF Q-CTRL. The
DC reference ramping times are set by Parameters 120.01 DC UP
TIME and
120.02 DC DOWN TIME. Minimum and maximum values for
the DC reference are set by Parameters 113.01 DC REF MAX and
113.02 DC REF MIN.
Reference List
The references are listed below.
Code
Parameter
Description
23.01
DC VOLT REF
User given reference
113.01 DC REF MAX
Upper limit for the reference
113.02 DC REF MIN
Lower limit for the reference
120.01 DC RAMP UP
Ramp up time
120.02 DC RAMP DOWN
Ramp down time
Actual Value
2.05
113.05 DC REF Q-CTRL
Reference from cosfii control
2.07
150.02 DC REF INITIALIZ
Initialized reference
2.06
122.02 DC REF RAMP
Ramped and limited reference
LIMITER
113.01 DC REF MAX
113.02 DC REF MIN
2.06
DC REF RAMP
RAMPING
120.01 DC RAMP UP
120.02 DC RAMP DOWN
2.05
DC REF Q-CTRL
SELECTOR
A
B
MAX(A,B)
23.01
DC VOLT REF
Содержание ACS 600 MultiDrive
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