Ascon Tecnologic - K__V - Indicators - ENGINEERING MANUAL - PAG. 2
2.1.3 K48V Series
SSR
RELAYS
NO
(M ax 20 mA)
PTC
NTC
ext.
gen.
OUT 12 VDC
SUPPLY
0..50/60 mV
0/4..20 mA
0/1..5 V
0/2..10 V
ACTIVE
0..1 V
ACTIVE
PASSIVE
(2 wires)
4..20 mA
4..20 mA
4
Pt100
TC
INPUT
DIN 1
2
1
3
7
5
6
8
C
9 10
OUT2
NO
11
C
12
OUT1
Relay OUT3: 5A-AC1 (2A-AC3) 250VAC
SSR: 8 mA / 8 VDC
Relays OUT1,2: 8A-AC1 (3A-AC3) 250VAC
OUT3
C
NO
DIN 2
2.1.4 K85V Series
(M ax 2 0 mA )
P TC
N TC
ext.
gen.
O U T 10 V D C
0..50/60 m V, 0..1 V
0/4..20 m A
A C TIV E
0/1..5 V , 0/2..10 V
AC TIV E
PA SS IV E
(2 w ires)
4..20 m A
4..20 m A
Pt100
TC
1
2
3
4
5
6
12
11
10
9
8
7
13 14 15 16 17 18 19
24
22
21
20
23
C
OU T1
O U T3
O U T2
N C
N O
C
N C
N O
C
N O
S U P PLY
INP UT
R S485
DIG .IN
SSR: 8 m A / 8 VDC
Relays OUT1,2: 8A-AC1 (3A-AC3) / 250 V
A
B
G N D
RELAYS
SSR
Relay O UT3: 5A-AC1 (2A-AC3) / 250 V
3. MOUNTING REQUIREMENTS
This instrument is intended for permanent installation, for
indoor use only, in an electrical panel which encloses the rear
housing, exposed terminals and wiring on the back.
Select a mounting location having the following characteristics:
1.
It should be easily accessible;
2.
There is minimum vibrations and no impact;
3.
There are no corrosive gases;
4.
There are no water or other fluid (i.e. condensation);
5.
The ambient temperature is in accordance with the op-
erative temperature (0... 50°C);
6.
The relative humidity is in accordance with the instrument
specifications ( 20% to 85 %).
Lo strumento può essere montato su un pannello con uno
spessore massimo di 15 mm.
Per ottenere la massima protezione frontale (IP65), è neces-
sario montare la guarnizione opzionale.
3.1 General Notes about Input Wiring
1.
Do not run input wires together with power cables;
2.
External components (like zener barriers, etc.) connected
between sensor and input terminals may cause errors in
measurement due to excessive and/or not balanced line
resistance or possible leakage currents;
3.
When a shielded cable is used, it should be connected at
one point only;
4.
Pay attention to the line resistance; a high line resist-
ance may cause measurement errors
.
3.2 Inputs wiring
3.2.1 Ingresso da termocoppia
1
2
-
+
12
11
-
+
K31-K48
K38-K85
External resistance:
100
Ω
max., maximum error 0.5% of span.
Cold junction:
automatic compensation from 0 to 50°C.
Cold junction accuracy:
0.1°C/°C after a warm-up of
20 minutes.
Input impedance:
> 1 M
Ω
.
Calibration:
according to EN 60584-1.
Note:
For TC wiring use proper compensating cable prefer-
able shielded.
3.2.2 Infrared Sensors Input
Exergen
1
2
-
+
12
11
-
+
K31-K48
K38-K85
External resistance:
Do not care condition.
Cold junction:
Automatic compensation from 0 to 50°C.
Cold junction accuracy:
0.1°C/°C.
Input impedance:
> 1 M
Ω
.
3.2.3 RTD (PT100) Input
RTD
2
1
11
12
3
10
K31-K48
K38-K85
Input circuit:
Current injection (135 µA).
Line resistance:
Automatic compensation up to 20
Ω
/wire
with maximum error ±0.1% of the input span.
Calibration:
According to EN 60751/A2.
Note:
The resistance of the 3 wires must be the same.
