2 - Electrical connections

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

2.3.4 PV CONTROL INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Connect the wires with the

 

 

 

 

 

 

 

 

 

 

 

 

 

For L J K S T thermocouple type

For mA, mV and V

polarity as shown

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

6

 

 

 

 

 

5

 

 

6

 

 

 

 

 

 

 

 

• Use always compensation cable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of the correct type for the ther-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

External shunt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mocouple used

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mA

 

 

 

 

 

 

 

 

2.5Ω

• The shield, if present, must be

 

 

 

 

 

 

 

 

wire resistance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connected to a proper earth.

 

 

 

 

 

 

 

 

150Ω max

mV

 

 

 

 

 

 

 

 

Rj >10MΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

•If a 3 wires system is used, use always cables of the same diameter (1mm2 min.)

(line 20 Ω/lead maximum resis- tance)

•When using a 2 wires system, use always cables of the same diam- eter (1,5mm2 min.) and put a jumper between terminals 5 and 6

For PT100 resistance thermometer

5 6 12

BB A For 3 wires only Ω/lead maxi-20

mum resistance

For ∆T (2 x RTD Pt100) Special

With 2 wire transducer 18Vdc

9

5

6

4…20mA

 

external

 

shunt

 

 

2.5Ω

PV

Transducer

With 3 wire transducer 18Vdc

AWhen the distance between the controller and the sensor is 15 mt. using a cable of 1.5 mm2 diameter, produces an error on the measure of 1°C.

5 6 12

A B A R1 R2

Use wires of the same length and

1.5mm2 size. 20 Ω/lead maxi- mum resistance.

9 5 6

external shunt

2.5Ω

Transducer

PV

R1 + R2 must be < 320Ω

12