Product Overview
The Fuji NP1AXH8I-MR acquires high-precision analog signals from field transmitters and sensors. This module processes 8 input channels with 4–20 mA or 1–5 VDC signal types. It converts analog measurements into digital values for the control system. The unit integrates seamlessly into Fuji Electric NP1 series programmable controller systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | NP1AXH8I-MR |
| Product Type | Analog Input Module |
| Number of Inputs | 8 channels |
| Input Signal Types | 4–20 mA or 1–5 VDC |
| Resolution | 14 bits |
| Accuracy | ±0.1% of full scale at 25°C |
| Temperature Drift | ±50 ppm/°C |
| Input Impedance | 250 Ω (current), 1 MΩ (voltage) |
| Conversion Time | 10 ms per channel |
| Common Mode Rejection | 100 dB at 50/60 Hz |
| Power Supply | 5 VDC from backplane |
| Power Dissipation | 3.5 W typical |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | –25°C to 70°C |
| Humidity Range | 10% to 90% non-condensing |
Physical Dimensions and Mounting
This analog input module measures 250 mm in width, 30 mm in height, and 140 mm in depth. The unit weighs approximately 0.40 kg. It plugs directly into a standard NP1 series rack backplane. The front panel includes LED indicators for power, channel activity, and fault status. These LEDs provide immediate visual feedback on input operation.
Electrical Interface and Field Wiring
A front-access terminal block provides the primary interface for all field wiring connections. The module accepts 4–20 mA or 1–5 VDC inputs through terminal jumpers. Each channel includes built-in 250 Ω resistors for current loop measurements. The terminal block accommodates solid or stranded wires up to 1.5 mm². Field devices like pressure transmitters, temperature sensors, and flow meters connect directly to these terminals.
Performance and Signal Processing
The NP1AXH8I-MR delivers 14-bit resolution for accurate measurement of process variables. It converts each channel within 10 milliseconds for timely data updates. The module filters input signals to reject 50 Hz and 60 Hz electrical noise. The analog-to-digital converter maintains excellent linearity over the operating range. Moreover, the module performs automatic zero and span calibration to maintain long-term accuracy.
Installation and System Integration
You can install this module into any available slot in the NP1 series rack. Insert the module carefully into the backplane until it locks securely. Configure the input type and range using the programming software. Always verify the wiring polarity matches the terminal markings. For critical process loops, implement redundant measurements for continuous monitoring.
Environmental Compliance
This module carries CE marking for industrial use. It also complies with RoHS environmental directives. The conformal coating protects the PCB against moisture and dust.
Details
| Weight | 1.4 kg |
|---|---|
| Dimensions | 127 × 254 × 203 mm |
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