Pv Control Input - ascon M1 line Manual

2.3.6 PV CONTROL INPUT

• 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
min.) (line 20 Ω/lead max-
(1mm 2
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
size, produces an error on the
measure of 1°C.
For L J K S T thermocouple type
5
6
Wire resistance
150Ω max.
For PT100 resistance thermometer
5
B
6
B
For 3 wires only.
Max. line restis-
12
tance: 20 Ω/line
A
For ∆T (2 x RTD Pt100) Special
5
A
R1
2
Use wires of the
6
same length and
B
R2
1.5 mm
12 Max. line restis-
A
tance: 20 Ω/line
R1 + R2 must be < 320Ω
For mA, mV and V
mV mA
With 2 wire transducer
PV
Transducer
External
shunt
2.5Ω
With 3 wire transducer
PV
2
size.
Transducer
2 - Electrical connections
B
5
6
External
Rj >10MΩ
shunt 2.5Ω
4...20mA
9 18Vdc
5
6
9
18Vdc
5
6
External
shunt 2.5Ω
13