Siemens 6ED1050-1AA00-0BE8 manual LOGO! AM2 PT100

LOGO! installation and wiring

2.3 Wiring LOGO!

LOGO! AM2 PT100

You can connect a maximum of two 2-wire or 3-wire PT100 sensors or one 2-wire plus one 3-wire PT100 sensor to the module. Note that the sensor type supported by the module is only PT100 with the default temperature coefficient of α= 0.003850.

For a 2-wireconnection, you need to short-circuit terminals M1+ and IC1 or M2+ and IC2. Errors caused by the ohmic resistance of the measuring line are not compensated for this type of connection. A line resistance of 1 Ω is proportional to measuring error of +2.5 °C.

A 3-wiretechnique suppresses the influence of the cable length (ohmic resistance) on the result of the measurement.

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/ 0 / 0 / 0 / 0

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37 37

	LOGO!
54	Manual, 04/2011, A5E03556174-01