Data library
8.6 Data sets
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
235
8.6.19 Data set DS 128 parameters of the metering function and extended protection
function
The table below shows data set 128 via which the parameters of the metering function and
the extended protection function can be read out but also set. It also contains the
assignments of the configurable digital output module.
The table below contains the data sets DS128: Parameters of the metering function and the
extended protection function (length 103 bytes, read/write):
Table 8- 32 Content of data set 128
Byte Description Data
point
Source
WL
Source
VL
Format Length
(bits)
Scaling
0 Header; value 0x00 00 00 00 — COM15 COM20 — 32 —
4 The voltage transformer can be star or delta-
connected on the primary side
162 Meter.
fct.
— Format
(162)
1 —
5 Reserved — — — — 8 —
6 Rated voltage of the system (on the primary side) 164 Meter.
fct.
— unsigned
int
16 0
8 Secondary voltage of transformer 165 Meter.
fct.
— unsigned
char
8 0
9 Length of period for calculating long-term mean
value
166 Meter.
fct.
— unsigned
char
8 0
10 Number of sub-periods for calculating long-term
mean value
167 Meter.
fct.
— unsigned
char
8 0
11 Reserved — — — — 8 —
12 Lower limit of power transmission 372 ETU — unsigned
int
16 0
14 Active power in normal direction 141 Meter.
fct.
— unsigned
int
16 0
16 Active power in reverse direction 143 Meter.
fct.
— unsigned
int
16 0
18 Delay time for active power in normal direction 142 Meter.
fct.
— unsigned
char
8 0
19 Delay time for active power in reverse direction 144 Meter.
fct.
— unsigned
char
8 0
20 Normal direction of incoming supply 145 Meter.
fct.
— Format
(145)
1 —
21 Direction of rotation of phase 146 Meter.
fct.
— Format
(146)
1 —
22 Underfrequency 147 Meter.
fct.
— unsigned
int
16 0
24 Delay time for overfrequency 150 Meter.
fct.
— unsigned
char
8 0
25 Delay time for underfrequency 148 Meter.
fct.
— unsigned
char
8 0
26 Overfrequency 149 Meter.
fct.
— unsigned
int
16 0
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