3.6.1 TC (Thermocouple) Connection
3.6 Temperature Input Connection
3.6.2 RTD Connections
Note 1 :
In 3-wire system, use always cables of the same diameter (min 1mm²)
Its necessary to use cable in the same gauge and type for doing the line compensation
properly.
Note 2 :
Install a jumper between terminals 2 and 3 when using a 2-wire RTD.
Note 3 :
If the distance is longer than 10 meters, use 3-wire system.
3-wire PT-100 connection
(with line compensation)
(Max. Line impedance is 10
W
)
2-wire PT-100 connection
(without line compensation)
Input resistance is greater than 10 M
W.
ii
1
1
2
2
3
3
PT-100
Note 1
Note 2
PT-100
17
1
2
TC
Connect the wires with the polarity as shown in the figure at left.
Always use compensation wire corresponding to
the thermocouple used. If present, the shield must
be connected to a proper ground.
ii
Input resistance is greater than 10 M
W.
ii
3
3.6.3 PTC and NTC Connections
Input resistance is greater than 10 M
W.
r.
ii
While doing the PTC Probe connection, pay attention to the PTC Probe cable
colour.
ii
R
E
D
1
2
PTC
W
H
IT
E
1
2
NTC
