RE10TC Temperature Control Module Operating manual

Functions Measuring of temperatures
2.2 Measuring of temperatures
2.2.1 Configuration of the analog inputs
Different types of thermocouples or a KTY sensor can be selected as temperature sensor of
each temperature controller by making settings in the buffer memory addresses 330 to 339. The
analog input can be set for measuring a voltage between 0 and 10 V as well.
When set as voltage input, the temperature curve is presumed to be linear. If e.g. a temperature
betwen 0 and 250 �C gives a voltage reading from 0 to 10 Volts, the temperature for a setpoint of
5 V will be 125 �C.
Type of input Input range Digital value Temperature range
Type J
Type K
Thermocouple
Type L
Type U
�30 mV to �30 mV 0 to 5000 0 to 500.0 �C
KTY sensor 0 to 5000 0 to 500.0 �C
Voltage input 0 to 10 V DC 0 to 10000 —
Tab. 2-3: Selectable types of inputs
The following buffer memory areas are connected to the analog inputs of the RE10TC:
Buffer Memory
Address (decimal)
Name Description
2.2.2 Monitoring of the temperature sensors
The connected temperature sensors are constantly monitored for broken wire or short circuit.
To prevent cooling down of a heating zone when an fault occurs, an separat ON time for the
corresponding output can be set.
The buffer memory allocation for the monitoring of the temperature sensors is shown on the next
page:
MITSUBISHI ELECTRIC 2 - 5
Real value/
Set value
0 to 9 Measured values
Scaled values from the analog
inputs
Real values
27 Status flags of the RE10TC Indication of activated calibration Real values
45
Measured value is outside the
input range
260 to 269 Temperature offset
330 to 339 Operation mode
Tab. 2-4: Buffer memory areas for analog inputs
Indication of an measured value
which is outside the input range
Correction value for the measured
temperature
Selection of the type of input and the
type of thermocouple
Real values
Set values
Set values