User Manual V1.3 | XtracontrolDC2, XtracontrolET2, XtracontrolEC21
Temperature measurement AI (T)
Fig. 31: example connection: temperature measurement
Item
Description
1
PT 100 with 2-wire connection
2
PT 100 with 3-wire connection
▶
Only use the corresponding AGND for each input.
▶
Do not connect AGNDs from different channels.
▶
Do not connect to the common GND. The required connections can already be found on the circuit board.
▶
Cables to the PT100(0) sensors should be connected as directly as possible (avoid the use of terminals and
terminal blocks).
▶
Only connect PT100(0) sensors to AI (U/T) channels.
2-wire measurement
Resistance can result in a measurement error, which in the case of long cables with a small cross-section can be up
to 10°. If the temperature of the sensor is known, this deviation can be subtracted by the software automatically and
compensated (alternatively, use 3-wire measurement).
3-wire measurement
The nearest AI (U) connection is used to compensate the resistance in the cable. It can only be used directly in
conjunction with the following AI (U/T) channel. Channels 1 and 2, and also channels 3 and 4 each form a pair for 3-
wire measurement.
© Infranor GmbH
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XtracontrolDC2.04
XtracontrolDC2.07
XtracontrolEC21 Slim
Summary of Contents for Xtracontrol DC2
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