Omron NX-AD4608 NX Series 8-Channel Analog Input Unit

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Manufacturer: Omron
Product No.: NX-AD4608
Country of origin:Japan
Product Type: Analog Input Modules
Payment: T/T, Western Union
Weight: 1000g
Dimensions: 12 mm x 71 mm x 100 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Optimized for precision industrial monitoring and high-speed motion synchronization, the Omron NX-AD4608 processes up to eight independent differential analog voltage signals. As an integral component of the Omron NX I/O bus system, this module interfaces directly with Sysmac NJ/NX controllers and EtherCAT or EtherNet/IP bus couplers to feed reliable sensor data back to the central processor. Its 15-bit high-resolution digital converter translates -10 to 10 V industrial inputs with exceptional fidelity, while a 0.08 ms conversion speed per unit ensures performance levels match rigorous real-time loop execution demands.

Features

High-Speed Synchronous Conversion: Extremely fast conversion time of 0.08 ms per unit for latency-critical control applications.
Eight Differential Inputs: Differential configuration helps suppress common-mode electromagnetic noise on low-voltage analog paths.
Sysmac System Integration: Supports synchronous I/O refreshing when used with NX-series EtherCAT Coupler and NJ/NX controllers.
Push-in Plus Terminal Blocks: Simplifies field installation with tool-free, high-retention front-facing connections.
Detachable Connector: Enables rapid module replacement without needing to disconnect individual field wires.

Applications

High-speed multi-axis motion and position feedback systems.
Precision pressure, flow, and temperature transmitter interfacing.
Dynamic voltage surveillance inside industrial control cabinets.
OEM machine building in packaging, assembly, and materials handling industries.

Technical Specifications

Parameter	Specification Value
Manufacturer	Omron
Model / SKU	NX-AD4608
Series	NX Series I/O System
Input Type	Linear Analog Voltage (-10 V to 10 V)
Number of Analog Inputs	8
Input Circuit Type	Differential
Resolution	15-Bit
Conversion Time	0.08 ms/unit
Signal Refreshing Method	Synchronous / Free-run refreshing
I/O Connection Type	Push-in Plus (16 terminals, detachable)
Ingress Protection Rating	IP20
Dimensions (W x D x H)	12 mm x 71 mm x 100 mm
Weight (Calculated)	0.07 kg

Empirical Engineering Insights

Alternative Models & Compatibility

The NX-AD4608 is primarily applied where voltage signal integrity is critical. If your application calls for analog current processing (e.g., 4-20 mA), the NX-AD4208 is the sister unit designed to meet those specific engineering criteria. Ensure your Sysmac Studio software package is updated to at least v1.10 to guarantee seamless configuration, mapping, and calibration diagnostics for the 8-channel input array.

Application Pitfalls & Engineering Notes

Differential signaling is superb at cancelling noise, but only if sensor power supply grounds are properly referenced. When wiring non-isolated transmitters, tie the transmitter negative power rail back to the common ground of the I/O bus power supply. Failure to address this ground loop differential can result in sensor signal clipping, high-voltage offset errors, or unexpected scaling saturation at the CPU level.

Commissioning & Wiring Tips

Use shielded twisted-pair (STP) cabling for all eight differential runs. Ground the shield at only one physical point (typically the clean instrumentation ground rail in the main cabinet) to avoid induced current loops. Because of the compact 12 mm module profile, space inside the terminal area is restricted. Employing ferrules with a plastic collar on your Push-in Plus connections guarantees clean insertion and eliminates stray wire strands that can bridge adjacent channels.

Installation Guidelines

CRITICAL WARNING: Completely de-energize the entire control panel, including the NX-series main bus coupler power supply and all auxiliary sensor field power lines, before mounting or removing the input unit. Operating under tension can result in backplane communication damage, controller faults, or severe electrical shock to personnel.

Align the top and bottom guide rails of the NX-AD4608 with the adjacent NX unit on the DIN rail.

Slide the module firmly toward the left-side unit until you hear the mechanical locking tab click. Secure the yellow DIN hook on the bottom.

Insert clean, ferruled signal lines into the Push-in Plus terminal block. Push the terminal straight back to secure, then gently tug each wire to verify mechanical retention.

Apply system power and verify that the local "TS" LED indicator displays solid green, confirming established system communication and status checks.

Key Features:

#Analog Input Modules #Omron NX Series

What is the primary difference between the NX-AD4608 and standard analog input cards?

The NX-AD4608 features 8 differential inputs designed for high-speed synchronous I/O refreshing (0.08 ms/unit) in Sysmac systems, optimizing it for noise-heavy industrial environments that demand high precision and low signal latency.

Can I input current loop signals (such as 4-20 mA) directly into this module?

No. The NX-AD4608 is rated strictly for voltage input signals between -10 V and 10 V. For current input applications, use the NX-AD4208 module instead.

What happens if a field signal ground loop causes a common-mode voltage spike?

Because this unit utilizes differential input circuitry, it is resistant to common-mode noise. However, keeping signal paths clear of major voltage swings relative to the system ground is crucial. Always route sensor shielding and common grounds to a central ground point to avoid clipping.

Does this model support hot-swapping under active communication?

No. Omron NX-series system modules require the bus and I/O power supplies to be shut down before changing physical cards to protect the internal ASIC architecture from electrical transients.

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Returns & Warranty

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12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

Country of origin

Omron NX-AD4608 NX Series 8-Channel Analog Input Unit