Configured for high-density analog signal acquisition in Sysmac I/O networks, the OMRON NX-AD4603 (NX-AD4603 Analog Input Module) provides direct physical/electrical execution. It digitizes up to 8 single-ended voltage input channels across a -10 to +10 V range with 1/8000 full-scale resolution. The module converts analog inputs into a decimal range of -4000 to 4000 via Free-Run refreshing, maintaining an overall accuracy of 0.2% at 25 deg C across the NX I/O backplane.

Model Number Code Structure

• NX: Sysmac modular slice I/O hardware platform specification.
• AD: Analog input processing module classification.
• 4603: 8-channel voltage input configuration (-10 to +10 V, 1/8000 resolution).

Technical Performance Metrics

Backplane Integration & High-Density Acquisition

The module transmits digitized channel data to the main CPU through high backplane bus communication velocity across the internal NX I/O bus. Integrating these inputs within Profinet / EtherNet/IP deterministic networks ensures cyclic sampling without signal latency. High I/O density scaling allows 8 voltage channels in a compact slice, maintaining firmware flash compatibility across network couplers and controller backplanes.

Commercial Package Contents

• 1 x OMRON NX-AD4603 Analog Input Module
• 1 x Push-In Plus Terminal Block
• 1 x Hardware Installation Sheet

Panel Installation & Field Cabling Directives

• DIN Rail Mounting: Align the top module guide with the DIN rail and press firmly until the lower locking lever snaps into place.
• Terminal Block Cable Prep: Strip solid or ferruled wiring to specified length and insert directly into Push-In Plus terminal slots.
• Signal Shielding: Use shielded twisted-pair cables for -10 to +10 V input runs and ground shields to the functional ground bar.
• Overvoltage Prevention: Ensure signal levels remain strictly within the +/-15 V absolute maximum limit to prevent front-end burnout.
• Adjacent Unit Installation: Lock side connectors securely against adjoining NX I/O units to maintain backplane bus continuity.

Technical FAQ

• Does the NX-AD4603 support live hot-swapping on an active NX I/O rack?

  No. Main power to the CPU unit and NX I/O expansion bus must be isolated before removing or inserting the module.

• How does the Free-Run refreshing method execute signal conversions?

  Analog-to-digital conversion operates continuously in asynchronous cycles, independent of the CPU primary task execution cycle.

• What happens if an input channel experiences a voltage exceeding +/-15 V?

  Exceeding the +/-15 V absolute maximum rating causes hardware degradation or permanent burnout of internal input circuitry.

• How are single-ended inputs wired to minimize common-mode noise?

  Connect common return lines to shared terminal reference points and use shielded wiring terminated at a single panel ground.

• What indicates an over-range condition on the converted digital output value?

  Input values between -5% and 105% convert linearly beyond -4000 to 4000, clipping at maximum conversion range boundaries.

• Is calibration required for individual channels prior to operational deployment?

  Factory calibration delivers 0.2% full-scale overall accuracy at 25 deg C without requiring manual zero/span adjustments.

• How is firmware flash compatibility maintained across different coupler units?

  The controller checks module device revision codes against system configuration profiles during backplane startup checks.

• What gauge wire is recommended for the Push-In Plus terminal connectors?

  Use 0.25 to 1.5 mm2 (AWG 24 to 16) solid wires or stranded wires with insulated ferrules for reliable connection.