Configured for high-speed signal distribution and system interfacing in CENTUM VP and CS 3000 platforms, the YOKOGAWA NFTI3S-00 S2 (NFTI3S-00 Node Interface Unit) provides direct physical/electrical execution of ESB bus connectivity and I/O module management.
NFTI3S: Base model identifier for the Node Interface Unit.
-00: Standard configuration suffix for interface logic.
S2: Hardware revision designation indicating updated terminal compatibility and internal processing specifications.
| Parameter | Specification |
| Model | NFTI3S-00 S2 |
| Brand | YOKOGAWA |
| Origin | Japan |
| Weight | 5.9 kg |
| Dimensions | 482.6 x 221.5 x 205 mm |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | Max 5.5 A |
| Interface | ESB bus (Enhanced System Bus) |
| I/O Capacity | 8 modules per unit |
| Protection | ISA G3 corrosion-resistant |
The YOKOGAWA NFTI3S-00 S2 serves as a focal point for system communication, facilitating 4-20 mA HART loop protocol integration across the CENTUM VP architecture. The unit manages channel-to-channel isolation for downstream I/O modules, ensuring that process signal fluctuations do not influence the integrity of the Enhanced System Bus (ESB). By utilizing redundant 24 VDC power inputs, the unit maintains operational availability during primary supply failures. The internal bus communication velocity is optimized to ensure deterministic data transfer between the field instruments and the Field Control Station (FCS).
Q: Can this unit be configured for redundant power supply?
A: Yes, the NFTI3S-00 S2 supports dual-redundant 24 VDC power inputs. Proper load distribution across both supply rails is required to maintain the specified max current consumption of 5.5 A.
Q: Is this unit compatible with non-ESB legacy systems?
A: The NFTI3S-00 is specifically engineered for the ESB bus interface. It is not directly compatible with legacy V-net or other proprietary fieldbus architectures without appropriate gateway conversion modules.
Mounting: The unit is designed for standard 19-inch rack installation. Ensure the mounting brackets are tightened to the rack frame to maintain ground continuity and prevent mechanical vibration resonance.
Power: Connect redundant 24 VDC power sources to the designated terminals. Use appropriately sized conductors to accommodate the 5.5 A current draw.
Grounding: Ensure the enclosure is connected to the cabinet ground bus via the earth terminal to provide effective shielding against electromagnetic interference (EMI).
Environment: While the unit features ISA G3 protection, avoid installation locations with direct exposure to conductive dust or extreme condensation to ensure the longevity of the backplane connectors.
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