Ascon Tecnologic - K__V - Indicators - ENGINEERING MANUAL - PAG. 3
3.2.4 Thermistors Input
2
1
11
12
3
10
PTC/NTC
K31-K48
K38-K85
Line resistance:
Not compensated.
Pt 1000 Input circuit:
Current injection (25 µA).
3.2.5 V and mV Input
V, mV
+
-
1
2
-
+
12
11
-
+
K31-K48
K38-K85
Input impedance:
> 1 M
Ω
Accuracy:
±0.5 % of Span ±1 digit @ 25 °C.
3.2.6 Current Input (mA)
0/4... 20 mA input wiring for passive transmitter
using auxiliary pws
Trasmetitore
4... 20 mA
2 fili
-
+
1
2
-
12
-
3
4
+
11
10
+
K31-K48
K38-K85
0/4... 20 mA input wiring for passive transmitter
using an external pws
+
-
1
2
-
+
12
11
-
+
Trasmettitore
4... 20 mA
passivo
K31-K48
K38-K85
Alimentatore
esterno
-
+
0/4... 20 mA input wiring for active transmitter
-
+
1
2
-
+
12
11
-
+
Trasmettitore
4... 20 mA
attivo
K31-K48
K38-K85
Input impedance:
< 51
Ω
.
Accuracy:
0.5% of Span ±1 dgt @ 25 °C.
Protection:
NOT protected from short circuit.
Internal auxiliary PWS:
10 VDC (±10%), 20 mA max..
3.3 Output
Safety notes:
–
To avoid electrical shock, connect power line at last.
–
For supply connections use No. 16 AWG or larger wires rated
for at last 75°C;
–
Use copper conductors only.
–
SSR outputs are not isolated. A double or reinforced isola
-
tion must be assured by the external solid state relays.
3.3.1 Output 1 (OP1)
Relay Output
C NC NO
22
K31
23 24
C NC NO
3
K38
4 5
C NO
11
K48
12
NO
NC
13
K85
14 15
C
17
16
Out 1 contact rating:
• 8 A /250 V cos
j
=1;
• 3 A /250 V cos
j
=0.4.
Operation:
1 x 10
5
.
Uscita SSR
+
-
22
K31
23 24
3
K38
4 5
11
K48
12 13
K85
14 15
17
16
+
-
+
-
-
+
Logic level 0
:
Vout < 0.5 VDC;
Logic level 1:
12 V ±20% @ 1 mA;
10 V ±20% @ 20 mA.
3.3.2 Output 2 (OP2)
Relay Output
C NC NO
19
K31
20 21
C NC NO
6
K38
7
8
C NO
9
K48
10
NO
NC
20
K85
21 22
C
24
23
Out 2 contact rating:
• 8 A /250 V cos
j
=1;
• 3 A /250 V cos
j
=0.4.
Operation
:
1 x 10
5
.
SSR Output
+
-
+
-
+
-
-
+
19
K31
20 21
6
K38
7
8
9
K48
10 20
K85
21 22
24
23
Logic level 0
:
Vout < 0.5 VDC;
Logic level
1:
12 V ±20% @ 1 mA;
10 V ±20% @ 20 mA.
