ascon M1 line, Руководство пользователя

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13
2 - Electrical connections
2.3.6 PV CONTROL INPUT
B
• Connect the wires with the
polarity as shown
• Use always compensation cable
of the correct type for the ther-
mocouple used
• The shield, if present, must be
connected to a proper earth.
• If a 3 wires system is used, use
always cables of the same size
(1mm
2 min.) (line 20
Ω
/lead max-
imum resistance)
• When using a 2 wires system, use
always cables of the same size
(1.5mm
2 min.) and put a jumper
between terminals 5 and 6
A
When the distance between the
controller and the sensor is 15
m using a cable of 1.5 mm
2
size, produces an error on the
measure of 1°C.
For L J K S T thermocouple type
Wire resistance
150
Ω
max.
For PT100 resistance thermometer
For 3 wires only.
Max. line restis-
tance: 20
Ω
/line
For
∆
T (2 x RTD Pt100) Special
Use wires of the
same length and
1.5 mm
2
size.
Max. line restis-
tance: 20
Ω
/line
R1 + R2 must be < 320
Ω
5
6
12
A
B
A
R1
R2
5
6
12
B
B
A
5
6
For mA, mV and V
Rj >10M
Ω
With 2 wire transducer
With 3 wire transducer
External
shunt 2.5
Ω
Transducer
18Vdc
9
5
6
PV
18Vdc
4…20mA
External
shunt
2.5
Ω
Transducer
PV
9
5
6
mV mA
5
6
External
shunt 2.5
Ω
M1UK.ed5 14-05-2009 14:56 Pagina 13