Yokogawa NFDV161-P00 STARDOM 64-Channel Isolated Digital Input Module

Product Overview

The Yokogawa NFDV161-P00 serves as a high-density interface for large-scale industrial automation, specifically within the STARDOM and DCS ecosystems. This module consolidates 64 discrete digital signals into a single I/O slot, allowing the central controller to monitor vast arrays of field switches, sensors, and status contacts. By utilizing galvanic isolation across all channels, it prevents field-side electrical surges from reaching the system backplane. We supply this unit as 100% Brand New, ensuring factory-original specifications and long-term hardware stability for your control architecture.

Part Number Breakdown

The NFDV161 series utilizes a structured suffix system to define connection methods and signal logic:

Technical Specifications

The NFDV161-P00 delivers precision 24V DC signal detection with robust electrical separation.

• Input Capacity: 64 isolated discrete channels

• Rated Input Voltage: 24 V DC

• Input Thresholds: ON: 20 to 26.4 V DC | OFF: ≤ 5.0 V DC

• Input Current: 2.5 mA ± 20% (per channel at rated voltage)

• Response Time: ≤ 8 ms (Status input)

• Isolation (Input-to-System): 2 kV AC for 1 minute

• Isolation (Between Commons): 500 V AC for 1 minute (per 16-channel group)

• Current Consumption: 550 mA @ 5 V DC (System supply)

• Wiring Interface: Pressure-clamp or MIL-connector cable options

• Weight: Approx. 0.3 kg

• Condition: 100% Brand New and Original

Engineering Advantages

The NFDV161-P00 addresses critical I/O density and signal integrity challenges in modern plants:

• Extreme Cabinet Space Efficiency: This module processes 64 inputs in the footprint typically occupied by 16 or 32-channel units. This 4x density increase reduces the number of required I/O racks and minimizes the total cabinet footprint, significantly lowering hardware and enclosure costs.

• Multi-Tier Electrical Protection: The module features 2 kV AC isolation between field inputs and the system bus, plus 500 V AC isolation between 16-channel common groups. This "staged" isolation prevents ground loops and ensures that a localized electrical fault does not propagate across all 64 channels.

• Rapid Signal Processing: An 8 ms response time enables real-time monitoring of high-speed process states. For human-machine interfaces, the module utilizes a 20 ms minimum detection time to capture momentary push-button presses accurately, even during high-traffic CPU cycles.

• Maintenance-Free Wiring: The pressure-clamp terminal option eliminates the risk of terminal loosening caused by industrial vibration. These connectors maintain constant tension on the field wiring, preventing high-resistance connections and intermittent signal loss over years of continuous operation.

FAQs

How does the NFDV161-P00 handle high-voltage spikes?

The module tolerates instantaneous allowable input voltages up to 30.0 V DC. Beyond this, the 2 kV AC galvanic isolation protects the central controller by physically decoupling the field wiring from the internal system logic.

What is the advantage of the 16-channel common groups?

The 64 channels are divided into four 16-channel groups, each with its own isolated common. This architecture allows you to mix different power sources or signal segments within the same module while preventing electrical cross-talk between the groups.

Can I use this module for high-frequency pulse counting?

While optimized for status monitoring, the module supports a maximum ON/OFF cycle of 25 Hz for push-button inputs. For applications requiring kilohertz-range counting, we recommend a dedicated high-speed counter module rather than a standard digital input.