Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-AD3203 — NX 4-Ch 4-20 mA Analog Input
SKU: NX-AD3203USD 145.00
Omron NX-AD3203 NX-series 4-channel 4-20 mA analog input slice, single-ended, 1/8000, 12 mm wide. In stock, China shipping.
1-Year Warranty
Full manufacturer warranty
Global Shipping
Worldwide delivery available
Genuine Omron
100% authentic product
Ready to Ship
Usually ships within 24h
In Stock
This item is available for immediate shipment from our warehouse.
Contact for pricing, bulk discounts, and shipping
Product Overview
The Omron NX-AD3203 is the NX-series 4-channel 4-20 mA single-ended analog input slice, 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).
It plugs into the NX I/O bus on an NX1P2, NX102, or NJ5 CPU or an NX-ECC201 EtherCAT Coupler and reads four 4-20 mA current loops at 1:8000 resolution. Conversion is 250 microseconds per point. Input impedance is 250 Ohm; absolute maximum +/-30 mA; range -5 to 105 percent of full scale; accuracy +/-0.2 percent at 25 C and +/-0.4 percent at 0 to 55 C. Input disconnection detection is supported.
The slice is 12 mm wide, 70 g, with a screwless push-in 12-terminal connector. NX unit power is 0.90 W max. Isolation is from the NX bus only. For a differential 4-20 mA unit pick NX-AD2204. For 1:30000 high-resolution pick NX-AD2208. For a matching 4-20 mA output slice pick NX-DA3203.
Key Features
- NX-series 4-channel 4-20 mA single-ended analog input slice with 1:8000 full-scale resolution (13-bit)
- 250 microseconds per point conversion time (1 ms per unit), 250 Ohm input impedance, +/-30 mA absolute maximum rating
- Free-Run refreshing, input disconnection detection, +/-0.2 percent accuracy at 25 C and +/-0.4 percent at 0 to 55 C
- Screwless push-in 12-terminal connector, 12 x 100 x 71 mm, 70 g, NX Unit power 0.90 W max
- SKU: NX-AD3203
- Series: NX-series Analog I/O Unit (NX-AD family) for NX I/O Bus and EtherCAT Coupler
Best-Fit Applications
- Reading four 4-20 mA pressure transducers on a packaging machine where an NX102-1200 polls the slice over EtherCAT at the primary task period
- Adding four flow-meter inputs to a four-zone temperature control panel that already runs on an NX-ECC201 EtherCAT Coupler and an NJ501-1300 Sysmac CPU
- Spare replacement on a water-treatment skid where the original NX-AD3203 was lost and the Sysmac Studio tag database points at the same I/O map
Buying Checklist
- Pick the NX-AD3203 when the project needs four single-ended 4-20 mA inputs on a 12 mm wide NX I/O slice.
- Pick the NX-AD2204 instead when the loops share grounds and need differential inputs to reject common-mode noise.
- Pick the NX-AD2208 instead when the application needs 1:30000 high-resolution differential input on a 12 mm slice.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | NX-series Analog I/O Unit (NX-AD family) for NX I/O Bus and EtherCAT Coupler |
| Model / SKU | NX-AD3203 |
| Number of Inputs | 4 analog inputs, single-ended, current |
| Input Range | 4 to 20 mA; input conversion range -5 to 105 percent of full scale |
| Resolution | 1:8000 full scale (13-bit) |
| Accuracy | +/-0.2 percent of full scale at 25 C; +/-0.4 percent of full scale at 0 to 55 C |
| Conversion Time | 250 microseconds per point; 1 ms per unit; refresh mode Free-Run |
| Input Impedance | 250 Ohm; absolute maximum rating +/-30 mA |
| Connection | Screwless push-in 12-terminal block, detachable; AWG24 to AWG16 |
| Isolation / Power | Isolated from NX bus (transformer + digital isolator); not isolated between input channels; NX unit power 0.90 W max; IOV / IOG terminals 0.1 A each |
| Dimensions / Approvals | 12 (W) x 100 (H) x 71 (D) mm; 70 g; IP20; CE, cULus, RCM, KC, EAC |
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-AD3203
What is the Omron NX-AD3203 used for?
It is the NX-series 4-channel single-ended 4-20 mA analog input slice for the NX I/O bus. Typical uses are reading pressure or flow transducers on a packaging machine, adding flow meters to a temperature control panel, and replacing a lost NX-AD3203 on a water-treatment skid without rewriting the Sysmac Studio tag database.
NX-AD3203 vs NX-AD2204 - what is the difference?
Both are NX-series 4-channel 4-20 mA analog input slices on a 12 mm wide body. The NX-AD3203 is single-ended with 1:8000 resolution. The NX-AD2204 is differential with the same 1:8000 resolution. Pick the NX-AD3203 when the four loops share a common ground and noise is low. Pick the NX-AD2204 when the four loops float relative to each other or run next to a VFD.
Does the NX-AD3203 have input disconnection detection?
Yes. The NX-AD3203 detects when the input drops below the 4 mA lower range limit and raises a disconnection flag in the I/O area. Sysmac Studio shows the affected channel as a -5 percent under-range value plus a disconnection status bit, which makes it easy to alarm on a broken wire without writing extra ladder.
What NX controller works with the NX-AD3203?
Any NX-series CPU or NX-ECC20x EtherCAT Coupler Unit: NX1P2, NX102, NJ5 through an NX-ECC201, or an NX-ECC203 for CJ-series masters. Configure the slice in Sysmac Studio under Configurations - I/O - NX, set the input range to 4 to 20 mA, and bind the four channels to four AT-spec variables.
What is the maximum number of NX-AD3203 slices on one NX bus?
Up to 63 NX I/O units on one EtherCAT Coupler, mixed with other NX slices. Each NX-AD3203 adds 0.90 W to the NX bus power budget and uses 4 bytes of input data plus 4 bytes of status. For a panel with mostly analog I/O, an NX-PF0630 (10 A I/O power feed) supplies current to the 4-20 mA loops off the bus.
Similar Products
Explore related Omron models often viewed alongside this product.
