05.05 Function descriptions
SIEMENS AG 6RX1700-0AD76 9-73
SIMOREG DC Master Operating Instructions
9.16.1 Setting the speed-dependent current limitation for motors with commutation
transition
I
S1
S1
n
n
n
I
I
I
10
3
20
2
1
1
3
2
I
~1/n (commutation limit curve)
Converter rated DC current
Current limit
Invention point
I
n
n
P
P
I
I
I
n
3
2
P
rated
A
rated
rated
rated
E
motor
Motor rating plate data n
E
= Point at which speed-dependent
current limitation intervenes
• Permissible limit values n
3
= Maximum operating speed
I
10
= 1.4
*
I
1
I
20
= 1.2
*
I
2
The current limitation curve is determined by n
1
, I
10
, n
2
and I
20
.
Parameters:
P104 = n
1
P105 = I
1
(used by unit to calculate I
10
)
P106 = n
2
P107 = I
2
(used by unit to calculate I
20
)
P108 = n
3
(defines speed normalization)
P109 = 0 ... speed-dependent current limitation deactivated
1 ... speed-dependent current limitation activated
Example of a motor rating plate:
* S H U N T -MOT. 1GG5162-0GG4 . -6HU7-Z
NRE EN 60034
V n
1
1/MIN n
2
I
1
A I
2
KW
46-380 50-1490 78.0-78.5 0.880-26.0
380 3400 / 4500 REG. 80.0 / 58.0 26.0 / 19.0
ERR. V A THYR.: B6C LV= 0MH 380V/ 50HZ
SEP. 310 2.85 IP 23 IM B3
77/51 0.87/0.60 I.CL.F
Z: A11 G18 K01 K20
SEP. VENTIL.
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