Omron CJ1W-AD041-V1 CJ Series Analog Input Unit 4 Channels 24V DC

Omron CJ1W‑AD041‑V1 is a high‑precision analog input unit for SYSMAC CJ series PLC systems. Converts analog signals from sensors and field devices into digital values for process monitoring and control in industrial automation applications. Each of the 4 channels is independently configurable for voltage or current ranges, enabling flexible integration with pressure transmitters, temperature sensors, flow meters, and other analog instrumentation.

Applications:

• Process variable monitoring (pressure, flow, level, temperature)

• Machine automation data acquisition and quality control

• Packaging machinery and material handling systems

• OEM equipment requiring analog input expansion

Core Specifications:

• Number of inputs: 4 analog inputs

• Input ranges (selectable per channel): –10 to 10 V, 0 to 10 V, 0 to 5 V, 1 to 5 V, 4 to 20 mA

• Resolution: 1/4,000 (sett able to 1/8,000)

• Conversion speed: 1 ms per point (or 250 μs per point with 1/8,000 resolution)

• Accuracy at 25 °C: Voltage ±0.2% of full scale; Current ±0.4% of full scale

• Accuracy over 0 °C to 55 °C: Voltage ±0.4% of full scale; Current ±0.6% of full scale

• Input impedance: Voltage ≥ 1 MΩ; Current 250 Ω (rated)

• Maximum rated input: Voltage ±15 V; Current ±30 mA

Advanced Specifications:

• Mean value processing: Stores the last n conversion values in the buffer and outputs the mean value (n = 2, 4, 8, 16, 32, 64)

• Peak value holding: Stores the maximum conversion value while the Peak Value Hold Bit is ON

• Input disconnection detection: Detects disconnection and activates the Disconnection Detection Flag (active for 1 to 5 V and 4 to 20 mA ranges)

• Offset/gain adjustment: Supported for calibration of each channel

• Scaling: Converts analog input values to user‑specified engineering units within ±32,000 range

• I/O connection: Removable screw terminal block

• Current consumption: 0.42 A max. at 5 V DC (from PLC backplane), no external 24 V DC required

• Dimensions (W × H × D): 31 mm × 90 mm × 65 mm

• Weight: 140 g max.

• Certifications: CE, cULus, NK, Lloyd

System Integration:

• This analog input unit belongs to the Omron SYSMAC CJ series Special I/O Units.

• Installs on CPU Rack or Expansion Rack via CJ I/O Bus, immediately to the right of the CPU or other I/O units.

• Unit number is set by the rotary switch on the front panel; the unit occupies 10 words in the Special I/O Unit DM Area.

• Configured in CX‑Programmer via I/O Table and Unit Setup; range and parameter settings are written to the DM Area.

• For current input, connect the positive current terminal and positive voltage input terminal with the enclosed short bar.

• For instructions on installation, parameter setting, and direct conversion functions (supported by CJ2 CPU units), refer to the product manual.

Related Products:

• Lower channel count / entry level → CJ1W‑AD041‑V1 (current model, 4 channels)

• Higher channel count → CJ1W‑AD081‑V1 (8 channels, same signal ranges)

• Alternative for mixed I/O (4 inputs / 2 outputs) → CJ1W‑MAD42

• Replacement for legacy model → Recommended replacement for discontinued CQM1‑AD041