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PROFIBUS-DP – Parameterization in DIGSI
6.3.2 Number representation in dependence of the parameterization
Percentage value
Secundary value
Primary value
6-8
For specification of the scaling of a measured value it must be known in
which number format (number of the relevant fractional digits) the
measured value is available in the SIPROTEC device and to which unit it
refers.
A scaling factor of 100 is recommended for percentage values.
With that the "Measured value
to be interpreted as:
+/- 32767 corresponds to +/- 327.67 %
The transmission of a measured value as secondary value is meaningful
only in few cases (e.g. transducer measured values in mA).
The number of significant fractional digits depends on the installations
and transducers data.
The fractional digits and the respective unit at primary values depends
tightly on the parameterized nominal values of the primary equipment
(DIGSI: "Power system data 1" and "Power system data 2").
Voltages: V
, V
, V
, V
, V
a
b
c
a-b
b-c
Parameter:
1101 Nominal operation voltage of primary equipment
Parameter area
1.0 ... 10.0 kV
>10.0 ... 100.0 kV
>100.0 ... 1000.0 kV
>1 MV
Displacement voltages: V
N
Parameter:
0202 Voltage transducer - Primary voltage
0206 Ratio factor V
Product of parameters 0202 and 0206
100.0 ... 1000.0 V
>1.0 ... 10.0 kV
>10.0 ... 100.0 kV
>100.0 ... 1000.0 kV
>1 MV
Currents: I
, I
, I
, 3I
, I
, I
,
a
b
c
0
1
2
Parameter:
1102 Nominal operating current of primary equipment
Parameter area
10 ... 100 A
>100 ... 1000 A
>1 ... 10 kA
7SJ61/62/63, 6MD63, 7UM61 PROFIBUS-DP – Communication profile
" in the PROFIBUS-DP message has
Integer
, V
, 3V
, V1, V2
a-c
0
Number representation / unit
/V
ph
delta
Number representation / unit
Number representation / unit
0.00 ... 99.99 kV
0.0 ... 999.9 kV
0 ... 9999 kV
0 ... 99.99 MV
0 ... 9999 V
0.00 ... 99.99 kV
0.0 ... 999.9 kV
0 ... 9999 kV
0.00 ... 99.99 MV
0.0 ... 999.9 A
0 ... 9999 A
0.00 ... 99.99 kA
C53000-L1840-B001-02
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