Siemens SINAMICS DCM Manual página 845

Ia red factor
Current PU1 / PU2
[8042.3]
[6850.8]
2
1
Ia act 6 cyc [%]
r52109
0
[6851.6]
1: Options Z04, Z05, Z07, Z13, Z15
PU I2t mon derat
0.50...1.00
p50077 (1.00)
Temp 1 [%]
r52050[0]
1
[8048.3]
MAX
Temp 2 [%]
0
r52050[1]
Dev Ia_rated [A]
Red Ia_rated [A]
r50072[0]
r50072[1]
Set bef lim w add [%]
r52133
[6840.4]
<1> These parameters are only updated for option Z04, Z05, Z07, Z13 and Z15.
<2> Twice for option Z04, Z05, Z07, Z13, Z15.
1 2
DO: DC_CTRL
Signals and monitoring functions - Power unit I2t monitoring
Ia par_power_unit
<2>
2
Thermal model of
2 2
<2> <2>
PU fact K1 lim val
0.50...1.00
p50066 (0.50)
Calculation of
derating factor K
Option Option
L15 L99
A60082
"Alarm derating factor K1
limit value fallen below"
Ia red factor
[8042.2]
[8042.8]
100 %
1
0
3 4
r52311[0...1] <1>
Temp rise calc [%]
Thyristor temp rise
r50014[1]
power unit
1
MAX
0
100 %
1
"I2t monitoring fault
excessive power unit
0 temperature rise"
0
1
0
± 2 %
1
0
180 %
S Q
& R Q
Priority:
Reset
0
1
5
fp_8042_13_eng.vsd
31.10.18 V01.05.00
I2T par_power unit
<1>
Power unit 1 [%]
r52312[0]
<1>
r52312[1] Power unit 2 [%]
r52310 I2t thyr temp rise [%]
PU I2t mon resp
F60139
0...2
p50075 (0)
"I2t monitoring fault
2
excessive power unit
temperature rise"
1
0
0
0
"I2t monitoring alarm
2
excessive power unit
0
temperature rise"
1
0
0
2
1
0
6 7
Function diagram
SINAMICS DCM
16000 μs
I2t PU thresh exc
r53148.0
F60139
[2548.2]
I2t PU thresh sav
r53148.1
A60039
[2548.2]
I2t Ia set n lim [%]
r52130
[6840.6]
Ia red factor
[8042.3]
8
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