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3.3.6 M8 analogue 4-input module for temperature measurement
Each temperature measurement module S can handle up to 4 inputs that can be configured freely for the use of temperature sensors or
thermocouples of various type. They come with some individually configurable parameters.
Temperature compensation (CJC – Cold-Junction Compensation) for the use of thermocouples occurs internally, under normal ambient temperature
conditions, there is no need to install an external cold-Junction. The installation of an external sensor is recommended in case of sudden changes in
the ambient temperature. Use a PT1000 sensor, such as the TE Connectivity NB-PTCO-157 sensor or the equivalent.
The temperature measurement module sends the values read to the control system, with an input word for each channel.
Up to a total of 4 words per module.
Type of sensors supported
Pt 100, Pt 200, Pt 500, Pt 1000
Ni 100, Ni 120, Ni 500, Ni 1000
Type of connection with 2, 3, 4 wires
Type of thermocouple supported
J, E, T, K, N, S, B, R
3.3.6.1 Electrical connections of temperature sensors (Pt and Ni series)
Pin 1 = + Sensor power supply
Pin 2 = + Input signal, positive
Pin 3 = - Sensor power supply
Pin 4 = - Input signal, negative
Ring nut = Functional earthing
Each input has two pins for constant sensor feeding and two pins for sensor signal.
Connections with 2, 3 and 4 wires can be made depending on the desired degree of precision.
Maximum precision can be obtained with 4-wire connection.
4-wire connection
3-wire connection
2-wire connection
In general, only shielded cables must be used for the transmission of analogue signals.
Sensor feeding
Sensor feeding
Sensor signal
Sensor
Sensor feeding
Sensor signal
Sensor
Sensor feeding
Sensor feeding
Sensor signal
Sensor signal
Sensor
3.3.6.2 Electrical thermocouple connections
Pin 1 = CJC – Cold-Junction Compensation via external sensor Pt1000 (optional)
Pin 2 = TC+ Input signal from sensor
Pin 3 = CJC - Cold-Junction Compensation via external sensor Pt1000 (optional)
Pin 4 = TC- Input signal from sensor
Ring nut = Functional earthing
Standard connection – internal cold junction
Connection with external Cold Junction – Optional
external cold junction
(optional)
Summary of Contents for EB 80 ETHERNET POWERLINK
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