CJ1W-AD081-V1 8-Channel Analog Input Unit 1/8000 Resolution | Omron

The Original New Omron CJ1W-AD081-V1 is an 8-channel analog input unit for the SYSMAC CJ series programmable logic controller (PLC) platform. It accepts voltage (±10V, 0–10V, 0–5V, 1–5V) and current (4–20mA) signals from field devices such as pressure transmitters, flow meters, temperature sensors, and position transducers. The module delivers 16‑bit binary output data with selectable resolution of 1/4000 or 1/8000, enabling precise process monitoring and control. Part of the CJ-series Special I/O Unit family, it is fully compatible with CJ1, CJ2, and NJ series CPU units.

Core Engineering Highlights:
8 analog input channels (voltage/current configurable) | ±10V, 0–10V, 0–5V, 1–5V, 4–20mA input ranges | 1/4000 or 1/8000 selectable resolution | 16‑bit binary output data | 520mA max @ 5V DC power consumption | 18‑point detachable screw terminal block | 31 × 90 × 65 mm | 150g max weight | 0°C to 55°C operating temperature

Key Features:

• Original New Omron CJ1W-AD081-V1 module

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

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

• Selectable resolution: 1/4000 or 1/8000

• 16‑bit binary output data for high-precision measurement

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

• A/D conversion period: 20μs per point

• Mean value processing with buffer sizes up to 512 samples

• Peak value holding for capturing maximum values

• Scaling function for user‑defined engineering units within ±32,000 range

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

• Offset/gain adjustment for calibration

• Photocoupler isolation between I/O and controller signals

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

• DIN rail mounting for control cabinet installation

Applications:

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

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

• Machine automation and data acquisition systems

• Factory automation and process control

• OEM equipment requiring high-precision analog input expansion

• CJ2H direct conversion for microsecond‑speed throughput

Technical Specifications:

System Compatibility:

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

• CJ2H CPU Units (unit version 1.1 or later) and CJ2M CPU Units support Direct Conversion for microsecond throughput

• CJ1 and NJ501 CPU Units do not support Direct Conversion

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

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

Related Products:

• CJ1W-AD041-V1 – 4-channel analog input unit (lower density)

• CJ1W-AD081-V1 – 8-channel analog input unit (current model)

• CJ1W-AD042 – 4-channel analog input unit with Direct Conversion

• CJ1W-DA041 – 4-channel analog output unit

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

• CJ1W-MAD42 – 4 input / 2 output combination analog I/O unit

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

• CJ1W-BC103 – 3-slot CPU rack

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.