Setting The Speed-Dependent Current Limitation For Motors With Commutation Transition - Siemens SIMOREG DC Master 6RA7028-6DS22 Operating Instructions Manual

Function descriptions
9.16.1 Setting the speed-dependent current limitation for motors with commutation
transition
Converter rated DC current
I P
A
Current limit
I
3
I
rated
P
rated
P
2
Motor rating plate data
•
Permissible limit values
I = 1.4 * I
10 1
I = 1.2 * I
20 2
The current limitation curve is determined by n
Parameters:
P104 = n
1
P105 = I (used by unit to calculate I
1
P106 = n
2
P107 = I (used by unit to calculate I
2
P108 = n (defines speed normalization)
3
P109 = 0 ... speed-dependent current limitation deactivated
1 ... speed-dependent current limitation activated
Example of a motor rating plate:
* NEBENSCHL.-MOT.
IEC160
V
46-380
380
ERR.
FREMD
Z:A11 G18 K01 K20
FREMDKUEHLUNG
9-66
I
S1
I
rated
S1
n n
1
rated
n
E
10
20
1GG5162-0GG4 -6HU7
NR.E
1/MIN
n n
1 2
50-1490
3400 / 4500 REG.
V A
310 2.85
77/51 0.87/0.60
SCHWINGSTAERKESTUFE R
Invention point
10
~1/n (commutation limit curve)
I
3
I
1
I
20
I
2
n
2
n
3
n = Point at which speed-dependent
E
current limitation intervenes
n = Maximum operating speed
3
, I , n and I
1 10 2
)
)
VDE0530
A
I I
1 2
78.0-78.5 0.880-26.0
80.0 / 58.0 26.0 / 19.0
THYR.: B6C LV= 0MH 380V/ 50HZ
IP23 BAUF.
I.CL.F
n
motor
.
20
KW
SIEMENS AG
SIMOREG DC Master
02.00
6RX1700-0AD76
Operating Instructions