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