PLCs, Power Supplies & Others

This module combines analog input and output capabilities in a single compact unit. It provides precise signal conversion for process control and instrumentation applications. Engineers use this module to interface sensors, transmitters, and control valves with the PLC system. The design integrates four configurable channels for maximum application flexibility. Its rugged construction ensures reliable operation in demanding industrial environments.

Channel Configuration and Signal Types

The NR2JAX-04VMRDT features four channels configurable as either inputs or outputs individually. Each input channel accepts 0-10V, 0-5V, or 4-20mA signals from field transmitters. Each output channel generates 0-10V or 4-20mA signals for actuator and valve positioning. Users can mix input and output functions across the four channels freely. This flexibility reduces the number of modules required for mixed I/O applications.

Resolution and Accuracy Specifications

The module achieves 16-bit resolution for both analog input and output conversions. Input accuracy reaches ±0.1% of full scale at 25°C reference temperature. Output accuracy maintains ±0.15% of full scale across the operating temperature range. The analog-to-digital and digital-to-analog converters provide excellent linearity. This precision ensures accurate process variable representation and control signal generation.

Physical Dimensions and Mounting

The NR2JAX-04VMRDT measures 12.7 cm in width, 25.4 cm in height, and 20.3 cm in depth. It weighs approximately 0.9 kg, which ensures stable placement within the rack assembly. A steel housing with vented panels provides effective thermal management. The unit mounts directly into standard 19-inch racks or compatible PLC backplanes. Its front panel locates all connectors and status indicators for convenient accessibility.

Connector Interfaces and Field Wiring

A 25-pin D-sub connector handles all analog signal terminations on the front face. This connector accepts wire gauges from 0.2 mm² to 1.5 mm² for secure connections. Individual shielded terminal blocks provide dedicated connections for each channel. The module includes separate grounding terminals for cable shield termination. Moreover, strain relief clamps protect field wiring from vibration-induced movement and disconnection.

Internal Components and Conversion Architecture

The printed circuit board contains one 16-bit ADC, one 16-bit DAC, and four operational amplifiers. A precision voltage reference provides stable 5.000 V for conversion accuracy. The module also includes 12 surface-mount resistors for input scaling and filtering networks. A 47 µF tantalum capacitor filters the reference voltage for noise reduction. No battery or non-volatile memory exists on this purely analog conversion assembly.

Power Requirements and Isolation

The NR2JAX-04VMRDT draws 250 mA from the 5 VDC backplane under full operational load. It also requires 150 mA from an external 24 VDC supply for loop excitation. Channel-to-channel isolation provides 500 VDC separation for preventing ground loops. The module includes transient protection on each input for surge immunity. These features protect the control system from field wiring faults and electrical noise.

Status Indication and Diagnostic Functions

Four front-panel LEDs indicate the operational status of each analog channel. Green LEDs confirm normal signal range while red LEDs signal overrange or underrange conditions. The module provides a fault relay output for external alarm annunciation. This relay activates when any channel exceeds its configured range limits. Maintenance personnel can quickly identify sensor or actuator faults without complex troubleshooting procedures.

Environmental Specifications and Compliance

The NR2JAX-04VMRDT operates reliably across temperatures from 0°C to 60°C. It withstands humidity levels up to 95% non-condensing without performance degradation. The module complies with IEC 61000-4-2 for electrostatic discharge immunity. Vibration tolerance meets IEC 60068-2-6 requirements for industrial environments. This robust construction suits chemical processing, water treatment, and HVAC automation applications.

Technical Data Sheet – Fuji NR2JAX-04VMRDT

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