Product Description
The NFLF111-S00/F9S00 is a high-efficiency communication interface module developed for the Yokogawa CENTUM VP distributed control system. This module serves as a Foundation Fieldbus H1 host, allowing the control station to manage and communicate with intelligent field devices. By utilizing digital bi-directional communication, the NFLF111-S00/F9S00 facilitates not only process variable transmission but also advanced device diagnostics and configuration data, which are essential for proactive plant maintenance and asset management.
Designed for high-density I/O environments, the NFLF111-S00/F9S00 manages the complex scheduling of fieldbus segments, ensuring deterministic data exchange for critical control loops. The S00/F9S00 configuration typically identifies the standard functional version equipped with specific terminal or mounting enhancements suitable for FIO (Field Interface I/O) nodes. Its compact form factor and low power consumption make it an ideal choice for modernizing traditional 4-20mA systems into fully digital fieldbus architectures.
Detailed Technical Specifications
| Specification | Details |
|---|---|
| Module Function | Foundation Fieldbus H1 Host Interface |
| Number of Ports | 4 segments per module |
| Communication Speed | 31.25 kbps (Standard H1 Fieldbus) |
| Maximum Devices | Supports up to 32 devices per segment (depending on power consumption and segment length) |
| Interface Protocol | Foundation Fieldbus H1 (IEC 61158-2) |
| System Bus Connectivity | FIO Bus (Field Interface I/O) |
| Current Consumption | 0.5 A at 5 V DC (Internal system power) |
| Dimensions | 12.7 cm x 2.5 cm x 12.7 cm |
| Weight | 0.3 kg |
| Operating Temperature | 0 to 55°C |
Network Management and Diagnostics
The NFLF111-S00/F9S00 provides the control system with detailed insight into the health of the fieldbus segment. It supports Link Active Scheduler (LAS) functionality, which manages the timing of all communications on the H1 segment. This ensures that safety-critical data is prioritized over non-critical diagnostic traffic, maintaining the integrity of the process control strategy.
Technical FAQ
-
Question: Does the NFLF111-S00/F9S00 provide power to the fieldbus segment?
Answer: No, this module acts as the communication host only. A separate Fieldbus Power Supply and signal conditioner are required to provide power to the field devices on the H1 segment. -
Question: Can this module be used in a redundant configuration?
Answer: Yes, in a CENTUM VP environment, dual NFLF111-S00/F9S00 modules can be installed in a redundant FIO node unit to provide high-availability communication for mission-critical segments.
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