Functions
6.3 Basic function/basic parameter
Motor starter (3RK1308‑0**00‑0CP0)
68
Equipment Manual, 11/2019, A5E34821005002A/RS-AC/003
Current motor current
The latest current in the motor starter is returned via the process image for analysis. In
addition, you can read out the latest current with phase precision in data set 94.
The current is measured in two phases. The current for the third phase is calculated. The
highest of the three values is determined. The returned 6-bit value specifies the motor
current ratio I
curr
/ I
rated
(I
rated
= parameterized rated operational current).
The value is represented by one digit before the decimal point (DI 1.5) and five digits after
the point (DI 1.0 to DI 1.4). This results in a maximum ratio for I
curr
/ I
rated
of 1.96875
(approx. 197 %).
The resolution is 1/32 per bit (3.125 %).
DI 1.5
DI 1.4
DI 1.3
DI 1.2
DI 1.1
DI 1.0
2
0
2
-1
2
-2
2
-3
2
-4
2
-5
1
0.5
0.25
0.125
0.0625
0.03125
Sum = 1.96875
0
0
0
0
0
0
I
curr
= 0
1
0
0
0
0
0
I
curr
= I
rated
x 1
1
0
1
1
0
0
I
curr
= I
rated
x 1.375
1
1
1
1
1
1
I
curr
= I
rated
x 1.96875
I
curr
= rated operational current I
rated
x value (DI 1.0 to DI 1.5)
I
rated
= rated current of the motor
Default setting
●
In the ET 200SP motor starter, the rated operational current is preset at the factory to the
maximum value. In the event of renewed parameterization, the parameters last set apply.
●
Due to the engineering systems, the rated operational current is preset to the minimum
value for safety reasons. You must therefore parameterize this value when you configure
the system. The ET 200SP motor starter may otherwise trip due to overload on first
starting.
Settings
Table 6- 1
Settings for actual motor current
Device parameters
Default settings
Setting range
Rated operational
current
•
In the motor starter: maximum value or last
parameterization
•
In engineering systems: minimum value
•
0.1 A ... 0.4 A
•
0.3 A … 1 A
•
0.9 A … 3 A
•
2.8 A … 9 A
•
4 A ... 12 A
Increment: 0.01 A
The setting range depends on the device type.
Содержание 3RK1308-0 00-0CP0 Series
Страница 1: ...Motor starter 3RK1308 0 00 0CP0 ...
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Страница 10: ...Introduction Motor starter 3RK1308 0 00 0CP0 10 Equipment Manual 11 2019 A5E34821005002A RS AC 003 ...
Страница 16: ...Security information Motor starter 3RK1308 0 00 0CP0 16 Equipment Manual 11 2019 A5E34821005002A RS AC 003 ...
Страница 34: ...Documentation guide Motor starter 3RK1308 0 00 0CP0 34 Equipment Manual 11 2019 A5E34821005002A RS AC 003 ...
Страница 174: ...CAx data 10 1 CAx data Motor starter 3RK1308 0 00 0CP0 174 Equipment Manual 11 2019 A5E34821005002A RS AC 003 ...
Страница 204: ...Data sets A 16 I M data Motor starter 3RK1308 0 00 0CP0 204 Equipment Manual 11 2019 A5E34821005002A RS AC 003 ...
Страница 218: ...Index Motor starter 3RK1308 0 00 0CP0 218 Equipment Manual 11 2019 A5E34821005002A RS AC 003 ...