Signal connection
45
imc CANSAS Getting Started - Doc. Version 1.9 - 05.12.2014
© 2014 imc Meßsysteme GmbH
3.3.1.5.2 imc Thermo-plug
ACC/DSUB-T4
The patented imc thermo-plug comes with a terminal strip and a built-in temperature sensor (Pt1000)
which provides cold junction compensation inside of the DSUB-15 connector. By this means, any
thermocouple types can be connected at the differential inputs (+IN and -IN):
The temperature sensor measures the contact's own temperature and compensates its parasitic thermal
voltage. In order to avoid additional (uncontrolled) thermal voltages, compensation lines of the same
material as the thermocouple should be used, or the thermocouple connected directly.
int. RTD
(PT1000)
IREF
I_INT
"TH-COUPLE / RTD"
ACC/DSUB-T4
3
8
15
12
DSUB-
1 5 Pins
9
6
7
14
13
5
4
11
2
10
1
2
3
5
6
8
9
11
12
13
4
14
7
17
18
10
te rm ina l-
num m e r
RTD
Thermocouple
+SUPPLY
-IREF
Cold junction
compensation
-SUPPLY
GND, CHASSIS, PE
15, 16
cable
shield
-IN1
-I1
+I2
+IN2
-IN2
-I2
+I3
+IN3
+IN1
+I1
-IN3
-I3
+I4
+IN4
-IN4
-I4
-IN1
+IN2
-IN2
+IN3
+IN1
+ IR EF
-IN3
+IN4
-IN4
-IR EF
+PT
-PT
+S
-S
C H AS
SIS
C H AS
SIS
