Part of the Omron CJ-Series PLCs series — see the full model table, lifecycle status and replacement parts.
Omron CJ1W-AD04U — 4 Ch Universal
SKU: CJ1W-AD04UUSD 160.00
4-point analog input unit for CJ-series PLCs. Voltage or current per channel, +/-10 V / 4-20 mA, 1/8000 resolution.
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Product Overview
The Omron CJ1W-AD04U is a 4-channel analog input unit for CJ-series PLCs. It is manufactured by Omron Corporation. Hengyixin Automation stocks this controller in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
31 mm slim width, removable terminal block 250 us / 1 ms per-point conversion time selectable 0.42 A at 5 VDC from the CJ backplane Universal inputs: 1-5 V / 0-5 V / 0-10 V / +/-10 V / 4-20 mA
Key specs: Channels 4 points, independently set; Input Ranges 1-5 V, 0-5 V, 0-10 V, +/-10 V, 4-20 mA; Resolution 1/8000 (or 1/4000) full scale; Conversion Time 250 us (or 1 ms) per point; Accuracy Voltage +/-0.2 % FS / Current +/-0.4 % FS; Connection Removable terminal block, M3 screws; Width 31 mm slim; Power Consumption ~0.42 A at 5 VDC from the CJ backplane.
Key Features
- 31 mm slim width, removable terminal block
- 250 us / 1 ms per-point conversion time selectable
- 0.42 A at 5 VDC from the CJ backplane
- Universal inputs: 1-5 V / 0-5 V / 0-10 V / +/-10 V / 4-20 mA
- SKU: CJ1W-AD04U
- Series: CJ1W process analog input
Best-Fit Applications
- Auxiliary analog inputs beside a higher-density CJ1W-AD081-V1 unit
- Light analog I/O block on a CJ1M-CPU22 retrofit panel
- Voltage feedback from a temperature transmitter on a heating loop
Buying Checklist
- Choose CJ1W-TC102 for Pt100 RTD inputs with cold-junction compensation.
- Choose CJ1W-AD081-V1 when more than 4 channels or full feature set is required.
- Choose CJ1W-TC001 / TC002 when thermocouple type K / J inputs are needed.
Technical Specifications
| Series | CJ1W process analog input |
|---|---|
| Channels | 4 points, independently set |
| Input Ranges | 1-5 V, 0-5 V, 0-10 V, +/-10 V, 4-20 mA |
| Resolution | 1/8000 (or 1/4000) full scale |
| Conversion Time | 250 us (or 1 ms) per point |
| Accuracy | Voltage +/-0.2 % FS / Current +/-0.4 % FS |
| Connection | Removable terminal block, M3 screws |
| Width | 31 mm slim |
| Power Consumption | ~0.42 A at 5 VDC from the CJ backplane |
| Operating Temperature | 0 to 55 degC |
| Mounting | CJ-series backplane (CPU rack or expansion rack) |
| Programming | CX-Programmer (with IORD / IOWR instructions) |
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-AD04U
What is the difference between CJ1W-AD04U and CJ1W-AD041-V1?
Both are 4-point analog input units for CJ racks and accept the same voltage and current ranges. The AD041-V1 adds the full feature set: disconnection detection, peak hold, averaging, and offset / gain scaling per channel. The AD04U is the lower-cost 4-point sibling for installations that only need a basic voltage / current read into the CPU.
Can the CJ1W-AD04U read 4-20 mA and voltage on the same unit?
Yes. Each of the 4 channels takes an independent range setting, so channels 1 and 2 can be 4-20 mA while channels 3 and 4 are 0-10 V. Use the front DIP switches to set the range per channel before powering the unit.
Does this unit work with a CJ1M CPU?
Yes. The CJ1W-AD04U mounts on any CJ-series rack — CPU rack or expansion rack — and communicates with any CJ1, CJ1M, CJ2M, or CJ2H CPU through standard I/O read / write instructions. For an NJ-series controller, use an NJ system that mounts CJ-series expansion racks through the CJ1W-IC101 I/O control unit.
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