The Omron NX-AD2604, also cataloged as the NX-AD2604 Analog Input Unit, operates as a dedicated hardware component for high-speed differential voltage signal digitization within NX I/O Bus architectures.

Model Coding & Functional Structure

• AD: Analog Input Unit hardware classification
• 2: 2-point analog input channel capacity
• 6: -10 to +10 V bipole voltage input range
• 04: 1/8000 conversion resolution with 250 us/point conversion speed

Engineering Specifications

Deterministic Bus Interface & Architecture

The module digitizes bipolar voltage inputs and routes raw register values across the backplane bus. High-speed backplane bus communication velocity Licences govern continuous cyclic updating without degrading local I/O density scaling across adjacent rack positions. Internal firmware flash compatibility ensures dynamic hardware detection and scaling calibration across EtherCAT communication couplers and centralized CPU nodes.

Package Contents

• 1 x NX-AD2604 Analog Input Unit Module
• 1 x 8-Pin Screwless Clamping Terminal Block
• 1 x Terminal Wiring Identification Guide

Field Installation & Cabling Directives

Mounting Procedure

• Align the rear module slot with the 35 mm DIN rail and press firm until the locking pawl engages.
• Maintain at least 30 mm vertical clearance above and below the housing for proper natural convective cooling.

Wiring & Noise Suppression Guidelines

• Use shielded twisted-pair cabling for all differential voltage signal leads to prevent electromagnetic interference.
• Connect input signal wiring to the push-in terminal block, ensuring conductor shields terminate to a clean functional earth ground.

Technical Inquiry Resolutions

• What is the full conversion cycle speed per analog channel?

  The analog-to-digital converter processes each channel at an execution speed of 250 us/point.

• What signal input range is supported by the unit hardware?

  The inputs accept differential bipolar voltage signals scaled within the range of -10 to +10 V.

• What level of channel-to-channel isolation is provided?

  The unit provides isolation between input circuits and the NX bus, but no electrical isolation exists between individual channels.

• Does the module draw electrical load from the I/O power supply?

  The internal electronics draw zero current from the I/O power supply, operating entirely without I/O power terminals.

• What terminal block configuration is provided on the module front?

  A detachable push-in screwless clamping terminal block with 8 individual terminal points is utilized.

• What is the input impedance rating of the voltage measurement circuits?

  The differential input stage provides a high input impedance rated at 1 Mohm minimum.

• What overall accuracy is maintained over the operating temperature span?

  Conversion accuracy is +/-0.2% of full scale at 25 deg C and +/-0.4% of full scale across 0 to 55 deg C.

• Can the unit be hot-swapped while the NX bus backplane is energized?

  Power supplies to the NX backplane must be completely isolated prior to mounting or removing the unit module.