The Omron CJ1W-PH41U Programmable Logic Controller (PLC) Process Analog I/O Unit features 4 input channels designed for thermocouple and infrared temperature input. It supports multiple sensor types including K, J, T, E, R, S, B, N, and L, providing high-speed and high-accuracy temperature measurement. The unit includes input isolation and universal input compatibility for precise temperature control in Omron PLC systems. Manufactured by Omron, part of the Omron Programmable Logic Controller family, available under the Omron CJ1W Series.
1/256,000 (Conversion period: 60 ms) (See note.), 1/64,000 (Conversion period:
10 ms), 1/16,000 (Conversion period: 5 ms)
Note: The resolution for potentiometer inputs is 1/4,000.
Applicable PLC models
CJ Series
Input points
4 inputs
Accuracy (25 ° C)
Resistance thermometer and thermocouple inputs:
±0.05% (The accuracy depends on the input type and the measured temperature.
For details, refer to the Accuracy and Temperature Coefficient According to
Resistance Thermometer and Thermocouple Input Types and Measured
Temperatures on Data Sheet.
Current or voltage input: ±0.05%
Potentiometer input: ±1%
Temperature coefficient
Resistance thermometer and thermocouple inputs:
The temperature coefficient depends on the input type and the measured
temperature. For details, refer to the Accuracy and Temperature Coefficient
According to Resistance Thermometer and Thermocouple Input Types and
Measured Temperatures on Data Sheet.
Current or voltage input: ±80 ppm/°C (for full scale)
Potentiometer input: ±100 ppm/°C (for full scale)
Input signal range
Resistance thermometer, thermocouple, ±100 mV userset inputs:
15% to 115% of measurable input range
4 to 20 mA, 1 to 5 V, 0 to 1.25 V, 0 to 5 V, 0 to 10 V inputs: 15% to 115%
0 to 20mA inputs: 0% to 115%
1.25 to 1.25 V, 5 to 5 V, 10 to 10 V, ±10 V userset range inputs: 7.5% to
107.5%
Potentiometer input: 15% to 115% of 0 to 2,500 Ω
Warmup time
Resistance thermometer inputs: 30 min
Thermocouple, ±100 mV userset range inputs: 45 min
Current or voltage inputs (excluding ±100 mV userset range): 30 min
Potentiometer input: 10 min
