Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-AD2604 — 2-Ch Analog Input, -10 to +10 V
SKU: NX-AD2604USD 140.50
Omron NX-AD2604 NX-series 2-ch analog voltage input, differential, 1/8000 resolution, 250 us/point. In stock, China shipping.
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Product Overview
The Omron NX-AD2604 is the NX-series 2-channel analog voltage input unit with differential inputs, 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. Specifications on this page were checked against Omron's NX-series I/O System brochure (R183).
Each of the two inputs covers -10 to +10 V with 1/8000 (13-bit) resolution at 250 us per point (500 us per unit total). Accuracy is ±0.2 percent full scale at 25 C and ±0.4 percent at 0 to 55 C. Input impedance is 1 MOhm minimum; absolute maximum rating is ±15 V. I/O refresh is Free-Run only.
The 12 mm wide housing carries an 8 pin screwless push-in terminal block. Power consumption is 1.35 W max on a CPU rack, 1.05 W max on a coupler. Isolation to the NX bus is via transformer (power) and digital isolator (signal); there is no isolation between the two channels. For the single-ended sibling pick the NX-AD2203. For 4 single-ended inputs pick the NX-AD3603.
Key Features
- NX-series 2-channel analog voltage input unit, differential inputs, -10 to +10 V per channel
- 1/8000 (13-bit) resolution, 250 us per point conversion, Free-Run I/O refresh only
- Screwless push-in 8-pin terminal block, 12 mm wide, 1.35 W max on CPU rack, 1.05 W on coupler
- ±0.2 percent accuracy at 25 C, ±0.4 percent at 0 to 55 C, 1 MOhm input impedance, ±15 V absolute max
- SKU: NX-AD2604
- Series: NX-series machine automation I/O, analog input units (NX-AD family)
Best-Fit Applications
- Stamping press pressure loop where the NX-AD2604 reads two 0 to 10 V transducers and writes scaled values to the NJ CPU every 500 us
- Temperature compensation on a packaging line where the NX-AD2604 reads two thermocouple-mV signals scaled through a 0 to 10 V conditioner
- Spare replacement on a CJ1W-AD041 retrofit where two CJ analog channels migrate onto one NX-AD2604 on an NX-ECC201 EtherCAT coupler
Buying Checklist
- Pick the NX-AD2604 for 2-ch -10 to +10 V differential analog input at 1/8000 resolution on the NX-series 12 mm wide body.
- Pick the NX-AD2203 instead when the cabinet needs single-ended inputs that can also accept 0 to 20 mA or 4 to 20 mA current loops on the same 12 mm wide body.
- Pick the NX-AD2608 instead when the application needs 1/30000 resolution and synchronous I/O refresh for tight motion-axis synchronization.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | NX-series machine automation I/O, analog input units (NX-AD family) |
| Model / SKU | NX-AD2604 |
| Number of Inputs | 2 single-ended or differential channels; differential input method |
| Input Range | -10 to +10 V; conversion range -5 to 105 percent full scale |
| Absolute Maximum | ±15 V across any input terminal |
| Resolution / Accuracy | 1/8000 full scale (13-bit); ±0.2 percent at 25 C, ±0.4 percent at 0 to 55 C |
| Conversion Time | 250 us per point, 500 us per unit total |
| I/O Refresh | Free-Run refresh only (not selectable for synchronous I/O refresh) |
| Terminal / Power | Screwless push-in terminal block with 8 pins; NX bus power 1.35 W max on CPU, 1.05 W max on Communications Coupler Unit; no I/O power terminals |
| Isolation | Input to NX bus: power = transformer, signal = digital isolator (no isolation between the two inputs) |
| Environment / Wiring | 0 to 55 C operating, 10 to 95 percent humidity (no condensation); 12 (W) x 100 (H) x 71 (D) mm; 70 g; IP20 |
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 NX-AD2604
What is the Omron NX-AD2604 used for?
It is the NX-series 2-channel analog voltage input unit with differential inputs. Each channel covers -10 to +10 V at 1/8000 (13-bit) resolution and updates in 250 us per point. Typical uses are hydraulic pressure loops, temperature compensators after a voltage conditioner, and any CJ-series-to-NX retrofit where two CJ analog channels migrate onto one NX unit on an NX-ECC201 EtherCAT coupler.
NX-AD2604 vs NX-AD2203 - what is the difference?
Both are 12 mm wide NX-series 2-channel analog input units at 1/8000 resolution with the same 250 us conversion time. The NX-AD2604 is differential and voltage-only (-10 to +10 V); the NX-AD2203 is single-ended and accepts -10 to +10 V, 0 to 10 V, 0 to 5 V, 1 to 5 V, 0 to 20 mA, or 4 to 20 mA per channel. Pick the NX-AD2604 when differential noise rejection matters; pick the NX-AD2203 when the panel needs 4-20 mA loops.
Does the NX-AD2604 support synchronous I/O refresh?
No. The NX-AD2604 runs in Free-Run refresh only. For synchronous I/O refresh on a 12 mm wide 2-channel differential voltage input, pick the NX-AD2608 (1/30000 resolution, Free-Run or synchronous). For motion-axis synchronization, the NX-EC0132 or NX-EC0142 encoder input units support synchronous refresh with EtherCAT Distributed Clock.
What CPU or coupler does the NX-AD2604 need?
The NX-AD2604 is an NX-series slave I/O unit. It plugs into an NX-ECC201 EtherCAT Coupler Unit, an NX-ECC202 EtherCAT Coupler Unit, or any NX-series CPU (NX102, NX1P2, NX502, NJ101, NJ301, NJ501) with an NX bus on the CPU rack. The unit does not work on the CJ1W or CS1W series.
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