Part of the Omron CJ-Series PLCs series — see the full model table, lifecycle status and replacement parts.
Omron CJ1W-AD081-V1 — 8-Ch Analog Input, CJ Rack
SKU: CJ1W-AD081-V1USD 115.00
CJ-series 8-ch analog input, 1/8000 resolution, 250 us per point, 1-5 V / 0-10 V / 4-20 mA. In stock, China shipping.
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Product Overview
The Omron CJ1W-AD081-V1 is an 8-channel analog input unit for the CJ-series PLC rack, manufactured by Omron Corporation. Hengyixin Automation stocks this I/O expansion unit in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
The CJ1W-AD081-V1 slots into any standard CJ1W rack position to the right of the CPU and reads eight analog field signals at a 1/8000 resolution (selectable to 1/4000). Each channel takes its own signal range independently — 1-5 V, 0-5 V, 0-10 V, -10 to +10 V, or 4-20 mA — with 250 microsecond conversion per point. The unit draws 580 mA from the 5 V rack supply and lands on a detachable 18-point terminal block. Built-in functions include scaling, peak hold, averaging, and disconnect detection.
Compatible CPUs are CJ1, CJ1M, and CJ2-series heads. For 4 channels at the same resolution, use the CJ1W-AD04U; for 20 microsecond direct conversion, pick the CJ1W-AD081-V1 (this SKU is the higher-resolution successor). Pair with CX-Programmer for scaling, and the CJ1W-TC001 for thermocouple inputs in the same rack.
Key Features
- 8 analog inputs on a single 31 mm CJ1W slice, individual signal range per channel
- 1/8000 resolution (selectable to 1/4000), 250 microsecond conversion per point
- Built-in scaling, peak hold, averaging, and disconnect detection
- Detachable 18-point terminal block, 580 mA draw from the 5 V rack supply
- SKU: CJ1W-AD081-V1
- Series: CJ1W high-function I/O unit
Best-Fit Applications
- Pressure transmitter scan on a hydraulic press reading eight 4-20 mA loops into a CJ2H-CPU64-EIP
- Tank level + flow metering on a water-treatment skid with eight mixed 4-20 mA probes
- Temperature scan with 4-20 mA transmitters on a heat-treatment oven paired with a CJ1W-TC001
Buying Checklist
- Pick the CJ1W-AD081-V1 for 8 analog inputs at 1/8000 resolution on a CJ rack.
- Pick the CJ1W-AD04U instead when voltage + current mixed 8-channel input is enough at lower resolution.
- Pick the CJ1W-TC001 for thermocouple inputs in the same CJ rack.
Technical Specifications
| Series | CJ1W high-function I/O unit |
|---|---|
| Function | Analog input, 8 channels |
| Signal Ranges | 1-5 V, 0-5 V, 0-10 V, -10 to +10 V, 4-20 mA (per channel) |
| Resolution | 1/8000 (selectable to 1/4000) |
| Conversion Time | 250 us per point (1 ms / point settable) |
| Accuracy (Voltage) | Plus or minus 0.2 % of full scale |
| Accuracy (Current) | Plus or minus 0.4 % of full scale |
| Functions | Disconnect detection, peak hold, averaging, scaling |
| Connection | Detachable 18-point terminal block (M3 screws) |
| Internal Current Draw | 580 mA max. at 5 VDC |
| Dimensions (W x H x D) | 31 × 90 × 89 mm |
| Compatible CPUs | CJ1, CJ1M, CJ2 (any CJ-series CPU) |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for CJ1W-AD081-V1
What is the Omron CJ1W-AD081-V1 used for?
It reads up to 8 analog field signals — pressure, level, flow, or temperature with a 4-20 mA transmitter — into a CJ-series PLC at 1/8000 resolution.
CJ1W-AD081-V1 vs CJ1W-AD04U — what is the difference?
The AD081-V1 is 1/8000 resolution across 8 channels. The AD04U is also 8 channels but at 1/4000 resolution with a voltage / current mix per group.
Does the CJ1W-AD081-V1 work with the CJ2H-CPU64-EIP?
Yes. The unit drops into any CJ1W slot to the right of any CJ1, CJ1M, or CJ2-series CPU, including the CJ2H-CPU64-EIP.
What is the maximum cable run on the CJ1W-AD081-V1?
Cable length is set by the analog signal environment — shielded twisted-pair to 50 m is typical for 4-20 mA loops in industrial cabinets.
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