CJ1W-AD041-V1 4-Channel Analog Input Unit ±10V/4-20mA 1/8000 | Omron

The Original New Omron CJ1W-AD041-V1 is a 4-channel analog input unit for the SYSMAC CJ series programmable logic controller (PLC) platform, designed to convert analog signals from field devices into digital data for precise process monitoring and control. It accepts voltage (±10 V, 0–10 V, 0–5 V, 1–5 V) and current (4–20 mA) signals, with each channel individually selectable. Featuring selectable resolution of 1/4000 or 1/8000, 16-bit binary output data, and a fast A/D conversion period of 1 ms/250 μs per point, this module delivers accurate and responsive analog acquisition for machine automation, process control, and data acquisition applications. Part of the CJ-series Special I/O Unit family, it is fully compatible with CJ1, CJ2, and NJ series CPU units. The module includes mean value processing, peak value holding, scaling, input disconnection detection, and offset/gain adjustment functions for flexible analog signal management.

Core Engineering Highlights:
4 analog input channels (individually configurable) | Voltage: ±10 V, 0–10 V, 0–5 V, 1–5 V | Current: 4–20 mA | Selectable resolution: 1/4000 or 1/8000 | 16‑bit binary output data | 1 ms/250 μs per point A/D conversion period| Photocoupler isolation between I/O and controller signals| 420 mA max current consumption at 5 V DC| 18‑point detachable screw terminal block (M3 screws)| 31 × 90 × 65 mm | 140 g weight| 0°C to +55°C operating temperature

Key Features:

• Original New Omron CJ1W-AD041-V1 module

• 4 analog input channels, individually configurable for voltage or current signals

• Input ranges: 1–5 V, 0–5 V, 0–10 V, –10 to 10 V, 4–20 mA

• Selectable resolution: 1/4000 or 1/8000

• 16‑bit binary A/D conversion output data

• A/D conversion period: 1 ms per point (1/4000 resolution) or 250 μs per point (1/8000 resolution)

• Overall accuracy at 25°C: Voltage ±0.2% of F.S., Current ±0.4% of F.S.

• Overall accuracy at 0–55°C: Voltage ±0.4% of F.S., Current ±0.6% of F.S.

• Mean value processing with buffer sizes: n = 2, 4, 8, 16, 32, 64

• Peak value holding for capturing maximum conversion values

• Scaling to user‑specified engineering units within ±32,000 range

• Input disconnection detection for 1–5 V and 4–20 mA ranges

• Offset/gain adjustment for calibration

• Photocoupler isolation between I/O and controller signals (no isolation between individual I/O signals)

• 18‑point detachable screw terminal block (M3 screws)

• DIN rail mounting for control cabinet installation

• 140 g lightweight design

• IP20 protection for control cabinet environments

• Direct conversion support for CJ2H and CJ2M CPU units (CJ2H unit version 1.1 or later, CJ2M all versions)

Applications:

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

• Analog signal acquisition from 4–20 mA transmitters and voltage sensors

• Machine automation and data acquisition systems

• Factory automation and process control

• OEM equipment requiring high-precision analog input expansion

• Applications requiring Direct Conversion for microsecond-speed throughput (CJ2H/CJ2M CPUs)

Technical Specifications:

System Compatibility:

• Compatible with Omron SYSMAC CJ1, CJ2, and NJ series CPU units

• Uses CJ-series I/O bus and mounts on CPU rack or expansion rack

• Direct Conversion supported by CJ2H-CPU[] (unit version 1.1 or later) and CJ2M-CPU[][] (all versions)

• Direct Conversion not supported by CJ1, NJ501, CP1H, or NSJ CPU units

• Programming software: CX-Programmer (CX-One) / Sysmac Studio

Related Products:

• CJ1W-AD081-V1 – 8-channel analog input unit (higher density)

• CJ1W-AD042 – 4-channel analog input unit with Direct Conversion (high-speed version)

• CJ1W-DA041 – 4-channel analog output unit

• CJ1W-DA08V – 8-channel analog output unit (voltage)

• CJ1W-MAD42 – 4 inputs / 2 outputs combination analog I/O unit

• CJ1W-PA205R – Power supply unit, 100-240 V AC, 25 W, with RUN output

• CJ1W-BC103 – 3-slot CPU rack

• CJ1W-ID211 – 16-point DC input unit

• CJ1W-OD212 – 16-point PNP transistor output unit

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Omron and SYSMAC are trademarks of Omron Corporation.