Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 220

Temperature Sensor Units
3-2-6 Connecting Temperature Sensors
CPM1A/CPM2A Temperature Sensor Units
Thermocouples
Temperature input 0
Temperature input 1
200
CPM1A-TS001
Either K or J thermocouples can be connected, but both of the thermocouples
must be of the same type and the same input range must be used for each.
Input 0 Input 1
+ +
Input 0 Input 1
– –
CPM1A-TS002
Either K or J thermocouples can be connected, but all four of the thermocouples
must be of the same type and the same input range must be used for each.
Input 0
+
Input 0
–
Temperature
input 0
Temperature
input 1
Note When using a Temperature Sensor Unit with a thermocouple input, observe the
following precautions:
Do not remove the cold junction compensator attached at the time of deliv-
ery. 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.
NC
NC NC NC
Cold junction compensator
Input 1
+
Input 1
NC NC
–
Cold junction
compensator
Section
NC NC
NC NC
Input 2
Input 3 NC
+
+
NC
Input 2 Input 3
– –
Temperature
input 2
Temperature
input 3
3-2