Rockwell Automation 2080 Micro800 Digital and Analog Plug-in Modules - Manual (Page 27)

Rockwell Automation Publication 2080-UM004B-EN-E - December 2013 19
Chapter
3
Non-isolated Thermocouple and RTD
Plug-in Modules – 2080-TC2 and 2080-RTD2
The Thermocouple (2080-TC2) and RTD (2080-RTD2) plug-in modules allow
for temperature measure and control when used with PID.
This plug-in can be used in any slot of your Micro830/Micro850 controller.
Removal and Insertion Under Power (RIUP) is not supported.
Thermocouple Module The 2080-TC2 two-channel plug-in module supports thermocouple measurement.
It digitally converts and transmits temperature data from any combination of up to
eight types of thermocouple sensors. Each input channel is individually configurable
through the Connected Components Workbench software for a specific sensor,
filter frequency.
Thermocouple Sensor Types and Ranges
The module supports B, E, J, K, N, R, S, T types of thermocouple sensors. The
module channels are referred to as Channel 0, Channel 1, and CJC, respectively.
The cold junction compensation is provided by an external NTC thermistor,
which comes with the module. The thermistor has to be fitted to the screw
terminals A3 and B3 of the module. This CJC is common to channel 0 and 1
thermocouple sensors and provides open-circuit, overrange and underrange
detection and indication.
Overrange and Underrange Conditions
If the channel temperature input is below the minimum value of its normal
temperature range for the represented sensor, the module reports an underrange
error through the Connected Components Workbench global variables. If the
channel reads above the maximum value of its normal temperature range for the
represented sensor, an over-range error is flagged.
The table below defines thermocouple types and their associated full-scale
temperature ranges.