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Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.

Omron NX-AD3604 — front face of the 4-channel -10 to +10 V differential analog input unit showing the screwless push-in 12-terminal block, the TS indicator and the NX-AD3604 type label

Omron NX-AD3604 — 4-Ch -10 V -20 V Analog Input

SKU: NX-AD3604

USD 170.00

NX 4-ch -10 to +10 V differential analog input, 1:8000, 250 us/ch, 12 mm wide. In stock, China.

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Product Overview

The Omron NX-AD3604 is an NX-series 4-channel -10 to +10 V differential analog input unit with a 1/8000 resolution It is 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 four channels accepts a -10 to +10 V signal in differential mode and converts it to a 13-bit value at 250 us per channel. Absolute maximum rating is +/-15 V and input impedance is 1 Mohm minimum.

Mount on any NX-ECC201 / ECC202 / ECC203 EtherCAT Coupler. Key specs: Number of Inputs 4 channels; Input Type -10 to +10 V differential; Input Conversion Range -5 to 105 percent of full scale; Absolute Maximum Rating +/-15 V; Input Impedance 1 Mohm minimum; Resolution / Accuracy 1/8000 (13-bit); +/-0.2 percent FS at 25 degC, +/-0.4 percent FS at 0 to 55 degC; Conversion Time / Refreshing 250 us per channel; Free-Run only; 1.10 W NX-bus max; External Connection Screwless push-in 12-terminal block (removable).

Key Features

  • NX-series 4-channel -10 to +10 V differential analog input
  • 1/8000 (13-bit) resolution, 250 us per channel conversion, Free-Run refreshing only
  • Absolute maximum +/-15 V, 1 Mohm input impedance, +/-0.2 percent full-scale accuracy at 25 degC
  • Screwless push-in 12-terminal block, 12 x 100 x 80 mm, 70 g, IP20, 1.10 W NX-bus max
  • SKU: NX-AD3604
  • Series: NX-series Analog Input Unit (voltage)

Best-Fit Applications

  • Reading four voltage-output pressure transducers on a hydraulic press and scaling them to bar in the NJ501 PLC every cycle
  • Retrofit camera where the cabinet already runs voltage scales and the FCN62 Nautilus card survives in the same 12 mm slice as older NX-AD3603
  • Vibration monitoring panel where four differential channels reject common-mode noise from VFD-bearing accelerometers at 1 Mohm input impedance

Buying Checklist

  • Choose the NX-AD3608 instead when 1/30000 resolution or Synchronous I/O refreshing is required for higher-precision weighing.
  • Choose the NX-AD3204 instead when the sensors are 4-20 mA current loops instead of -10 to +10 V voltage.
  • Choose the NX-AD3603 instead when the sensors share a common ground and single-ended wiring is acceptable on the same 12 mm body.

Technical Specifications

Manufacturer Omron Corporation (Japan)
Series NX-series Analog Input Unit (voltage)
Model / SKU NX-AD3604
Number of Inputs 4 channels
Input Type -10 to +10 V differential
Input Conversion Range -5 to 105 percent of full scale
Absolute Maximum Rating +/-15 V
Input Impedance 1 Mohm minimum
Resolution / Accuracy 1/8000 (13-bit); +/-0.2 percent FS at 25 degC, +/-0.4 percent FS at 0 to 55 degC
Conversion Time / Refreshing 250 us per channel; Free-Run only; 1.10 W NX-bus max
External Connection Screwless push-in 12-terminal block (removable)
Dimensions / Approvals 12 (W) x 100 (H) x 80 (D) mm; 70 g; IP20; cULus, CE, RCM

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-AD3604

What is the difference between NX-AD3603 and NX-AD3604?
Both are 4-channel -10 to +10 V voltage inputs on the same 12 mm slice. The AD3603 is single-ended and supports both 0-10 V and +/-10 V ranges with lower noise rejection. The AD3604 is differential and gives better common-mode noise rejection in noisy industrial cabinets. Both use the screwless push-in 12-terminal block.
Does the NX-AD3604 support Synchronous I/O refreshing?
No. The NX-AD3604 supports Free-Run refreshing only. For Synchronous I/O at 1/8000 resolution with EtherCAT cycle timing, pick the higher-resolution NX-AD3608 (1/30000, Synchronous I/O selectable) on the same 12 mm slice at a different price point.
What is the maximum cable length for -10 to +10 V signals?
Up to 10 m with shielded twisted-pair cable in a typical industrial cabinet. The differential input rejects common-mode interference well above 30 V peak. Use individually shielded pairs where multiple channels run in the same cable tray to avoid crosstalk on long runs.
Can the NX-AD3604 mount on an EtherCAT coupler?
Yes. The NX-AD3604 mounts on the NX-ECC201, ECC202 or ECC203 EtherCAT Coupler, on the NX-EIC202 EtherNet/IP Coupler, or directly on the NX102 modular CPU bus. The 12 mm width keeps four slices under 50 mm of DIN rail space.

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