Ascon tecnologic K 1E Series, Инструкция по эксплуатации

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Ascon Tecnologic - KM1E/KR1E - Wine - ENGINEERING MANUAL -
PAG. 2
3 ELECTRICAL CONNECTIONS
3.1 General notes about 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 resistance
may cause measurement errors.
3.2 Electrical wiring diagram
3.2.1 KM1E
RS485
Thermo-
couple
DI1
OP3
OP2
OP1
OP4
(note)
DI2 (note)
Analogue input
mV, V mA
Note:
Terminal 4 can be programmed as:
- Digital Input
(DI2) connecting a free of
voltage contact between terminals 4 and 16;
- 0... 12 V SSR Drive Output (OP4) connecting
the load between terminals 4 and 16;
- 12 Vdc (20 mA) transmitter power supply
connecting the 2 wire transmitter between
terminals 4 and 1; for 3 wire transmitter connect
terminal 4 to transmitter power supply input and
terminal 1 and 2 to transmitter signal output.
Neutral
Line 12 VDC
(note)
PV
4... 20 mA
3 wire transmitter
12 VDC(note)
PV
Pt100 Pt1000/NTC/PTC
4... 20 mA
2 wire transmitter
100... 240 Vac/
18... 28 Vac/
20... 30 Vdc
Power
supply
TERMINALS
Pin connector
q
1.4 mm max.
(0.055 in.)
Stripped wire
L:
5.5 mm
(0.21 in.)
L
3.2.2 KR1E
RS485
DI1
OP3 OP2
Neutral Line NO NO C C
Supply voltage: 100... 240 Vac/
18... 28 Vac/
20... 30 Vdc
NC C NO
OP1
Thermo-
couple
mV, V mA
Pt100 Pt1000/NTC/PTC
12Vdc
(note)
PV
12Vdc
(note)
PV
OP4
(note)
DI2
(note)
TERMINALS
L
Analogue input
Pin:
q
1.4 mm (0.055 in.) max. Stripped wire: L 5.5 mm (0.21 in.)
Note: Terminal 4 can be programmed as:
- Digital Input (DI2) connecting a free of voltage contact between terminals 4 and 11;
- 0... 12 V SSR Drive Output (OP4) connecting the load between terminals 4 and 11;
- 12 Vdc (20 mA) transmitter power supply connecting the 2 wire transmitter between
terminals 4 and 1; for 3 wire transmitter connect terminal 4 to transmitter power supply
input and terminal 1 and 2 to transmitter signal output.
4... 20 mA
2 wire transmitter
4... 20 mA
3 wire transmitter
Power supply
3.3 Inputs
D D
The connection modes of the various analogue input
types are the same for both instruments. Therefore
in this paragraph the separation between KM1E and
KR1E is not carried out.
3.3.1 Thermocouple Input
1
2
+
_
External resistance: 100
Ω
max., maximum error 25
m
V.
Cold junction:
automatic compensation between 0... 50°C.
Cold junction accuracy: 0.05°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
preferable shielded.
3.3.2 Infrared Sensor Input
Exergen
1
2
+
_
External resistance:
not relevant.
Cold junction: automatic compensation between 0... 50°C.
Cold junction accuracy:
0.05°C/°C.
Input impedance: > 1 M
Ω
.
3.3.3 RTD Pt 100 Input
3
RTD
1
2
Input circuit:
Current injection (150 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.
3.3.4 RTD Pt 1000, NTC and PTC Input
2
3
Pt1000
Line resistance: Not compensated.
Pt 1000 input circuit: Current injection (15 µA).
Pt 1000 calibration: According to EN 60751/A2.
3.3.5 V and mV Input
mV
V
+
_
+
_
1
2
Input impedance: > 1 M
Ω
for mV Input
500 k
Ω
for Volt Input.