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CJ1W-AD04U

Omron CJ1W-AD04U Analog Input Unit 4-Channel Universal

SKU: CJ1W-AD04U

USD 160.00

Omron CJ1W-AD04U is a 4-channel universal analog input unit for CJ series PLCs, accepting voltage and current inputs.

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Product Overview

CJ1W-AD04U belongs to Omron CJ1W analog I/O family and is used where process variables must be measured and integrated into PLC control logic. Typical signals include temperature, pressure, flow, and level feedback from instrumentation in machine and utility panels. This module is commonly selected when process visibility and control-loop support must be added while preserving CJ controller architecture. Engineering should validate signal range mapping, scaling, grounding strategy, and channel diagnostics for reliable operation. Commissioning includes calibration checks, noise evaluation, and alarm threshold validation. CJ1W-AD04U is typically chosen when robust analog input expansion is needed for maintainable industrial process control systems.

  • SKU: CJ1W-AD04U
  • Series: CJ1W
  • I/O: 4 I/O

Best-Fit Applications

  • Process variable acquisition for control loops
  • Temperature/pressure/flow monitoring channels
  • Utility skid instrumentation integration
  • Machine condition analog feedback capture
  • Retrofit expansion of analog visibility in CJ systems
  • Distributed process-signal collection in production lines

Buying Checklist

  • Confirm transmitter range and module compatibility.
  • Validate engineering-unit scaling in PLC program design.
  • Use proper grounding and shielding for signal integrity.
  • Set alarm thresholds aligned with process safety needs.
  • Document calibration and maintenance verification routines.

Technical Specifications

Model CJ1W-AD04U
Series CJ1W
Type Analog Input Unit
Input Channels 4 channels
Input Types Voltage: 0-10V, ±10V; Current: 0-20mA, 4-20mA
Resolution 1/6000 (voltage), 1/3000 (current)
Accuracy ±0.3% full scale
Conversion Time 250μs per channel
Input Impedance 1MΩ (voltage), 250Ω (current)
Isolation Channel-to-channel isolated
Connection Removable terminal block
Current Consumption 150mA at 5VDC
Operating Temperature 0 to +55°C
Mounting CJ series backplane

FAQ for CJ1W-AD04U

What sensors can I connect to this analog input?
Voltage output sensors: pressure transmitters (0-10V), temperature transmitters (0-10V), potentiometers. Current loop sensors: 4-20mA pressure, flow, level transmitters. Universal input suits most industrial sensors.
How do I wire 4-20mA current input?
Connect sensor + to input +, sensor - to input -. Unit provides 250Ω internal shunt. For external shunt or powered sensors, follow wiring diagram in manual. Ensure proper grounding.
What's the actual resolution in engineering units?
For 0-10V: 10V/6000 = 1.67mV per count. For 4-20mA: 16mA/3000 = 5.33μA per count. Scale in PLC program to engineering units (pressure, temperature, etc.).
Can I use this for thermocouple input?
No, CJ1W-AD04U is for voltage/current only. For thermocouples, use CJ1W-TC001/TC002/TC102 thermocouple input units with built-in cold junction compensation.

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