Data library
8.5 Function classes
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
191
8.5.10
Parameters of the SENTRON circuit breakers (primary protection function)
The table below contains the parameters of the SENTRON circuit breakers (primary
protection function):
Table 8- 10 Parameters of the SENTRON circuit breakers (primary protection function)
Description
Data
point
Source
WL
Source
VL
Format
Length
(bits)
Scaling Contained in
DS.Byte
Active parameter set
370
ETU
ETU
Format
(370)
1
—
DS129.65
Time lag class (SENTRON VL
LCD ETU40M only)
331
—
ETU
Format
(331)
8
0
DS129.68
Overload parameter I
R
parameter set A
(PS A)
333
ETU
ETU
unsigned
int
16
0
DS129.4
Time-lag class t
R
PS A
335
ETU
ETU
unsigned
int
16
– 1
DS129.8
Short-circuit protection instantaneous I
i
PS A
336
ETU
ETU
unsigned
int
16
1 /
0 (VL)
DS129.10
Short-circuit protection delayed I
sd
PS A
337
ETU
ETU
unsigned
int
16
1 /
0 (VL)
DS129.12
Delay time for short-circuit protection t
sd
PS A
338
ETU
ETU
unsigned
int
16
–3
DS129.14
Overload protection neutral conductor
I
N
PS A (WL)
334
ETU
—
unsigned
int
16
0
DS129.6
Overload protection neutral conductor I
N
(VL)
365
—
ETU
unsigned c
har
8
0
DS129.66
Ground-fault protection I
g
PS A
339
ETU
ETU
unsigned
int
16
0
DS129.16
Delay time for ground-fault protection t
g
PS A
340
ETU
ETU
unsigned
int
16
– 3
DS129.18
Ground fault alarm I
g2
PS A
341
ETU
—
unsigned
int
16
0
DS129.20
Delay time for ground fault alarm t
g2
PS A
342
ETU
—
unsigned
int
16
– 3
DS129.22
I
4
t characteristic for overload protection
PS A
345
ETU
—
Format
(345)
1
—
DS129.26
I
2
t characteristic for delayed short-circuit
protection PS A
343
ETU
ETU
Format
(343)
1
—
DS129.24
I
2
t characteristic for ground-fault
protection PS A
344
ETU
ETU
Format
(344)
1
—
DS129.25
Thermal memory PS A
346
ETU
ETU
Format
(346)
1
—
DS129.27
Phase loss sensitivity PS A
347
ETU
—
Format
(347)
1
—
DS129.28
Cooling time constant PS A
348
ETU
—
unsigned
int
16
0
DS129.30
Overload parameter I
R
parameter set B (PS B)
349
ETU
—
unsigned
int
16
0
DS129.32