Siemens SENTRON VL Series

Data library
8.6 Data sets
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
239
8.6.20 Data set DS 129 Parameters of the protection function and settings for load
shedding and load pick up
The table below shows DS129 that contains the parameters (overload protection, time-lag
class, short-circuit protection, thermal memory, phase loss sensitivity, etc.) of the protection
function, and the settings for load shedding and load pick up.
The table below shows DS129 that contains the parameters of the protection function, and
the settings for load shedding and load pick up:
Table 8- 33 Content of data set 129
Byte Description Data
point
Source
WL
Source
VL
Format Length
(bits)
Scaling
0 Header; value 0x00 00 00 00 — COM15 COM20 — 32 —
4 Overload parameter I
R
parameter set A
(PS A)
333 ETU ETU unsigned
int
16 0
6 Overload protection neutral conductor I
N
PS A
(WL)
334 ETU — unsigned
int
16 0
8 Time-lag class t
R
PS A 335 ETU ETU unsigned
int
16 –1
10 Short-circuit protection instantaneous I
i
PS A 336 ETU ETU unsigned
int
16 1 /
0(VL)
12 Short-circuit protection delayed I
sd
PS A 337 ETU ETU unsigned
int
16 1 /
0(VL)
14 Delay time for short-circuit protection t
sd
PS A 338 ETU ETU unsigned
int
16 –3
16 Ground-fault protection I
g
PS A 339 ETU ETU unsigned
int
16 0
18 Delay time for ground fault t
g
PS A 340 ETU ETU unsigned
int
16 –3
20 Ground fault alarm I
g2
PS A 341 ETU — unsigned
int
16 0
22 Delay time for ground fault alarm t
g2
PS A 342 ETU — unsigned
int
16 –3
24 I
2
t characteristic for delayed short-circuit
protection PS A
343 ETU ETU Format
(343)
1 —
25 I
2
t characteristic for ground-fault protection
PS A
344 ETU ETU Format
(344)
1 —
26 I
4
t characteristic for overload protection PS A 345 ETU — Format
(345)
1 —
27 Thermal memory PS A 346 ETU ETU Format
(346)
1 —
28 Phase loss sensitivity PS A 347 ETU — Format
(347)
1 —
29 Reserved — — — — 8 —
30 Cooling time constant PS A 348 ETU — unsigned
int
16 0
32 Overload parameter I
R
parameter set B
(PS B)
349 ETU — unsigned
int
16 0