Yokogawa NC2*C Network Communication Module

Configured for high-reliability data exchange in industrial control architectures, the Yokogawa NC2*C (NC2*C Network Communication Module) provides direct physical/electrical execution of field-to-controller signal bridging, data packet routing, and network protocol management.

Hardware Specifications

Yokogawa DCS Process Control Characteristics

• 4-20 mA HART loop protocol: The NC2*C serves as a node for HART-capable field device communication. It ensures that digital status overlays and diagnostic data are transparently passed through the network, allowing DCS controllers to monitor field instrument health without signal degradation.
• FOUNDATION Fieldbus / Profibus PA connectivity: The module operates as a critical gateway for fieldbus segments. It maintains the timing precision and bus arbitration required for deterministic communication, ensuring that process variables are synchronized across the distributed control system.
• Channel-to-channel isolation: The module features galvanic isolation across its communication ports. This is mandatory to decouple the field-side network from the centralized controller, preventing localized voltage surges or ground faults from compromising system-wide data integrity.
• Cold junction compensation (CJC): The NC2*C is engineered for high-temperature resilience (-40 deg C to +70 deg C); its internal thermal management ensures that the module does not contribute to localized drift when mounted in proximity to sensitive analog cards, preserving the accuracy of system-wide reference measurements.

Frequently Asked Questions

Q: Does the NC2*C support redundant network topologies?

A: Yes, the module is designed to integrate into redundant network loops. It supports automatic fail-over signaling, allowing the control system to redirect communication traffic to a secondary path if the primary link experiences high latency or physical disconnection.

Q: Is this module field-configurable for different industrial protocols?

A: The NC2*C is optimized for Yokogawa system protocols. Ensure that the module's firmware is matched to the specific host control system requirements, as protocol handling and baud rate synchronization are pre-defined during the configuration phase of the network setup.

Field Installation Guidelines

• Mounting: Secure the module within the designated control rack or DIN-rail enclosure. Ensure that the mechanical connections are tight, which is mandatory to minimize vibration and maintain the physical continuity of the network trunk.
• Grounding: Terminate the NC2*C chassis ground to the cabinet's primary safety earth bus. A low-impedance ground reference is mandatory to ensure the efficacy of the module’s internal surge suppression and to protect the communication transceivers from electrostatic discharge.
• Wiring: Utilize shielded, twisted-pair cabling for all network trunks. Maintain at least 150 mm of separation from high-voltage AC cabling to avoid electromagnetic interference, which is mandatory to maintain signal integrity and prevent packet re-transmission errors on the communication bus.