Yokogawa NC2*C CENTUM VP Network Module

Configured for deterministic Vnet/IP packet transmission in Yokogawa CENTUM VP platforms, the Yokogawa NC2*C (NC2 Network Communication Module) provides direct physical/electrical execution. This hardware component functions as the interface layer managing data frame transfers between field control units and the primary system bus. The module establishes physical media connections over Ethernet infrastructure to synchronize control topologies, using faceplate LEDs to register hardware status transitions, link activity, and bus fault codes directly at the rack assembly.

Suffix Breakdown & Model Matrix

Hardware Specifications

Channel-to-Channel Isolation and Vnet/IP Bus Integration

The NC2*C module coordinates industrial control network frames across the Vnet/IP bus architecture via channel-to-channel isolation circuits engineered to arrest electrical transients before they reach the backplane. The module maintains a 1500 VAC system-to-bus galvanic isolation standard to prevent potential ground loops across control segments. The internal processor executes 100 Mbps data throughput with clock synchronization mechanics, mitigating transmission latencies and ensuring deterministic network scheduling. Dual-bus media control rules prevent data collisions and ground potential differentials from corrupting real-time process data streams under steady-state operation.

Frequently Asked Questions

Q: How does the network module execute the switchover sequence during a Vnet/IP cable break?

A: The module operates on a dual-redundant Vnet/IP bus topology. If the active channel detects a link failure or packet corruption, the internal communication processor switches all transmission lines to the secondary bus path within deterministic limits to maintain real-time process monitoring.

Q: Are there any hardware restrictions when hot-swapping this module in an active FCU rack?

A: Hot-swapping is permitted provided that the parallel redundant module is fully initialized, online, and carrying active network traffic. The fault LED on the companion module must be unlit before removing the target card.

Q: What structural grounding measures protect the 100 Mbps Vnet/IP physical layer?

A: The module relies on integrated shielding contacts within the FCU slot and standard shielded connectors. These components shunt high-frequency electrostatic noise away from the internal logic circuits directly into the common rack ground plane.

Field Installation Guidelines

1. Slot Insertion: Align the module guide rails with the designated vertical FCU slot. Push the assembly inward until the structural locking connectors click completely into the backplane, confirming full pin engagement.
2. Network Cabling: Use Shielded Twisted Pair (STP) cables to connect to the Vnet/IP network switches. Avoid laying communication media parallel to high-voltage AC cables to minimize crosstalk interference.
3. Grounding Protocol: Ensure the main equipment rack connects to a low-impedance instrument ground system. Verify that the shield drain wires of the network trunks terminate at a single point to prevent ground loops.
4. Environmental Limits: Verify that cabinet cooling fans maintain steady airflow over the slot array. Ambient operating temperatures must remain between 0 and 60 deg C, and relative humidity must remain non-condensing between 5 and 95 %.