FUNCTION CHARACTERISTICS
48
NA30 - Manual - 04 - 2022
All alarm and/or trip elements can be enabled or disabled by setting
ON
or
OFF
the
ThALx Enable
e
Th>x Enable
parameters inside the
Set \ Profile A(or B) \ Thermal protection with RTD thermo-
metric probes - 26 \
PTx Probe \ ThALx Alarm (ThALx Trip)
where x = 1...8
.
Each trip threshold (Th>x) may be associated with the breaker failure (BF) function by setting
ON
the
Th>xBF
parameters inside the
Set \ Profile A(or B) \ Thermal protection with RTD thermometric
probes - 26 \
PTx Probe \ ThALx Trip
where x = 1...8.
[1]
Note 1 The common settings concerning the Breaker failure protection are adjustable inside the
Breaker Failure - BF
menu.
Fun-F26.ai
Logic diagram for thermal protection with RTD thermometric probes (26)
T°
≤
+24 5.0°C
T°
>
Pt
x
>
Pt
x
Pt1
Pt2
Pt3
Pt4
Pt5
Pt6
Pt7
Pt8
0
T
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
T°
>
Th
ALx
Pt100-
x Trip
Pt100-
xAlarm
t
Th
>
x
t
ThALx
BF Enable (ON
≡
Enable)
Pt100 OK
Pt100 FAULT
Th>xBF
TOWARDS BF LOGIC
Th>x BF_OUT
TOWARDS DIAGNOSTIC
Pt
x
> Diagnostic
TRIP
&
&
&
T°
≥
-4 9.0°C
0
T
ThALx-K
ThALx-L
Th>x-K
Th>x-L
Th
ALx
Th
>
x
t
ThALx
t
Th
>
x
Pro_N
E1
THYBUS
PUT
N
I
S
U
B
Y
H
T
T
U
P
T
U
O
S
U
B
Y
H
T
MPT
8
T1
PT1
PT8
MPT1
MPT8
PT7
MPT7
PT6
MPT6
PT5
MPT5
PT2
MPT2
PT3
MPT3
PT4
MPT4
T8
7
6
T7
T6
T5
11
T2
12
13
15
T3
16
17
20
T4
21
22
49
48
47
44
43
42
40
39
38
35
34
33
Pt100 probes (Pt1...Pt8)