Omron CP1L-EL20DR-D Operation Manual page 565

Temperature Sensor Units
Note
Connecting Temperature
Sensors
Note
SW
1 Thermocouple type of
temperature sensor
2 Temperature unit
3 NC
4 Input type selection for
the third input (Input 2)
5 Input type selection for
the fourth input (Input 3)
6 Analog input signal
range
Temperature input
Input type Range (°C)
−200.0 to 1300.0 −300.0 to 2300.0 Voltage
K
−100.0 to 850.0
J
Fahrenheit temperature uses the following equation to convert the tempera-
ture unit from Celsius, but the temperature input range is different between
Fahrenheit and Celsius.
Fahrenheit temperature (°F) = Celsius temperature (°C) x 1.8 + 32
Thermocouples
Either K or J thermocouples can be connected, but all four thermocouples
must be the same type and the same input range. Only last two channels can
be used as analog inputs.
LOOP0+
LOOP0−
Temperature input 0
Temperature input 1
When connecting a thermocouple input, observe the following precautions:
• Do not remove the cold junction compensator attached at the time of
delivery. If the cold junction compensator is removed, the Unit will not be
able to measure temperatures correctly.
• Each of the input circuits is calibrated with the cold junction compensator
attached to the Unit. If the Unit is used with the cold junction compensator
from other Units, the Unit will not be able to measure temperatures cor-
rectly.
• Do not touch the cold junction compensator. Doing so may result in incor-
rect temperature measurement.
Setting
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Range (°F) Input type
−100.0 to 1500.0 Current
LOOP2+
LOOP1+
V IN2
NC NC I IN2
LOOP1−
Cold junction Temperature input 2
compensator
Temperature input 3
Section 9-5
J
K
°F
°C
Analog input
Thermocouple
Analog input
Thermocouple
1 to 5V/4 to 20mA
0 to 10V
Analog input
Range
0 to 10V/1 to 5V
4 to 20mA
LOOP3+
I IN3
V IN3
LOOP2− LOOP3−
COM2 COM3
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