Yokogawa ALE111-S50 S1 — FOUNDATION Fieldbus H1 Communication Module | CENTUM VP / CS 3000 Platform
Engineering Background
The ALE111-S50 S1 is a FOUNDATION Fieldbus H1 (FF-H1) communication module designed for Yokogawa’s CENTUM VP and CS 3000 Distributed Control Systems. It serves as the physical-layer gateway between the DCS controller bus and FF-H1 field segments, enabling deterministic, intrinsically safe digital communication with smart field instruments. The module operates within the Field Control Station (FCS) chassis and is fully compliant with the IEC 61158 / IEC 61784 fieldbus standards.
Product Positioning
Targeted at process industries requiring high-density, multi-drop instrument networks — including refining, petrochemical, LNG, and specialty chemical plants — the ALE111-S50 S1 reduces wiring infrastructure costs while delivering per-device diagnostics and advanced process data unavailable on conventional 4–20 mA loops. It is the preferred module for engineers specifying Yokogawa DCS expansions, brownfield migrations, and greenfield FF-H1 segment builds.
Complete Technical Specifications
| Part Number | ALE111-S50 S1 |
| Manufacturer | Yokogawa Electric Corporation |
| Module Type | FOUNDATION Fieldbus H1 Communication Module |
| Compatible Platform | CENTUM VP, CENTUM CS 3000 |
| Fieldbus Standard | FOUNDATION Fieldbus H1 (IEC 61158 / IEC 61784) |
| Communication Speed | 31.25 kbit/s (FF-H1 physical layer) |
| FF-H1 Segments per Module | Up to 4 segments (model-dependent) |
| Devices per Segment | Up to 16 field devices (standard); up to 32 with repeaters |
| Power Supply | Supplied via FCS backplane (no external PSU required) |
| Intrinsic Safety Support | Compatible with IS barriers for Zone 0/1/2 installations |
| Redundancy | Supports dual-redundant FCS configurations |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | −25 °C to +70 °C |
| Humidity | 5% to 95% RH (non-condensing) |
| Weight | 300 g (approx.) |
| Form Factor | Single-slot FCS I/O module card |
| Firmware / Revision | S50, Revision S1 |
| Certifications | CE, ATEX (with appropriate barriers), IECEx |
Proven Application Environments
The ALE111-S50 S1 is deployed across the most demanding continuous-process industries:
- Oil & Gas Upstream / Midstream: Wellhead control panels, separator trains, and pipeline SCADA nodes where multi-drop FF-H1 reduces junction-box count and cable runs.
- Petroleum Refining: Crude distillation units (CDU), hydrotreaters, and FCC units requiring tight loop control with device-level diagnostics for predictive maintenance.
- LNG & Gas Processing: Cryogenic service instrumentation where FF-H1 device diagnostics detect valve stem wear and transmitter drift before process upsets occur.
- Petrochemical & Specialty Chemicals: Reactor temperature and pressure cascades with multiple smart transmitters on a single FF-H1 segment.
- Power Generation: Boiler drum level, feedwater, and combustion control loops integrated into CENTUM VP FCS via ALE111 segments.
- Pharmaceutical & Fine Chemicals: cGMP batch processes where FF-H1 audit trails and device parameter logging support 21 CFR Part 11 compliance.
- Pulp & Paper / Mining: Brownfield CS 3000 installations being upgraded to CENTUM VP while retaining existing FF-H1 field wiring infrastructure.
Engineering Advantages
- Native DCS Integration: The ALE111 communicates directly over the Yokogawa V-net/IP or Vnet controller bus — no third-party OPC gateway or protocol converter required.
- Segment-Level Redundancy: When paired with a redundant FCS, the module supports bumpless switchover, maintaining FF-H1 segment power and LAS (Link Active Scheduler) continuity.
- Advanced Device Diagnostics: Exposes NAMUR NE 107 device health status (Failure, Out of Specification, Maintenance Required, Check Function) directly in CENTUM VP HIS operator stations.
- Reduced Field Wiring Cost: A single FF-H1 segment replaces up to 16 individual 4–20 mA cable pairs, cutting installation material and labor costs by 40–60% in dense instrument areas.
- Backward Compatibility: S50/S1 firmware revision maintains compatibility with CS 3000 R3.x and CENTUM VP R4.x through R6.x, protecting existing engineering investments.
- Hot-Swap Capable: Module replacement is supported without FCS shutdown in redundant configurations, enabling zero-downtime maintenance windows.
System Architecture & Signal Flow
The ALE111-S50 S1 occupies a single I/O slot in the Yokogawa FCS node unit. Signal flow proceeds as follows:
- Controller Bus (V-net/IP): The FCS processor exchanges process data and configuration commands with the ALE111 over the internal Yokogawa controller bus at scan rates configurable from 100 ms to 1 s per macro-cycle.
- ALE111 Internal Processing: The module acts as Link Master / LAS for each FF-H1 segment, scheduling publisher/subscriber data exchange among field devices according to the FF communication schedule downloaded from CENTUM VP Engineering.
- FF-H1 Physical Segment: Each segment runs at 31.25 kbit/s over a shielded twisted-pair cable (Type A, IEC 61158-2). The module provides segment power (9–32 V DC) and terminates the bus. Field devices (transmitters, valve positioners, analyzers) connect in multi-drop topology.
- Intrinsic Safety Barrier Interface: For hazardous-area installations, a Zener or galvanic IS barrier is inserted between the ALE111 segment port and the field cable, limiting energy to safe levels for Zone 0/1 apparatus.
Sourcing & Quality Verification
- OEM-Traceable Stock: All ALE111-S50 S1 units offered by Konmask.com are sourced from verified industrial surplus channels, decommissioned DCS upgrades, and authorized distributor overstock — never from unverified grey-market brokers.
- Pre-Shipment Inspection: Each module undergoes visual inspection (PCB, connectors, firmware label, revision markings) and functional power-on verification before dispatch.
- Serialization Check: Module serial numbers are cross-referenced against Yokogawa’s published revision history to confirm firmware revision S1 authenticity.
- Packaging: Shipped in anti-static ESD bags with foam cushioning inside double-wall corrugated cartons. Desiccant included for long-haul ocean freight.
- Documentation: Certificate of conformity, inspection report, and datasheet available upon request for each shipment lot.
Procurement Process
- Submit RFQ: Email support@konmask.com or call +0086 19859288691 with your required quantity, delivery timeline, and project site.
- Receive Quote: Konmask responds within 1 business day with unit price, lead time, and available stock quantity.
- Order Confirmation: Issue a Purchase Order referencing part number ALE111-S50 S1 and vendor Yokogawa. Pro-forma invoice issued upon PO receipt.
- Payment & Export Clearance: T/T bank transfer or LC accepted. Export documentation (commercial invoice, packing list, CO) prepared for customs clearance.
- Shipment & Tracking: DHL Express, FedEx International Priority, or sea freight (LCL/FCL) based on order volume. Real-time tracking number provided.
- After-Sales Support: 30-day DOA (Dead on Arrival) replacement guarantee. Technical commissioning support available via email.
Technical FAQ
Q: Is the ALE111-S50 S1 compatible with CENTUM VP R6.06 and later?
A: Yes. The S50/S1 revision is supported across CENTUM VP R4.01 through the current R6.x release train. Confirm your FCS firmware version with Yokogawa’s compatibility matrix if running R6.06 or above.
Q: Can this module be used in a non-redundant FCS configuration?
A: Yes. The ALE111 operates in both simplex and dual-redundant FCS node configurations. In simplex mode, segment power and LAS function are provided by the single module.
Q: How many ALE111 modules can be installed per FCS node?
A: The number of I/O slots per FCS node unit determines the maximum count. A standard AFV10S node unit supports up to 16 I/O module slots; actual ALE111 count depends on your I/O mix and engineering design.
Q: Does Konmask provide a functional test report for each unit?
A: Yes. A pre-shipment inspection report is available upon request. For critical projects, third-party FAT (Factory Acceptance Test) arrangements can be discussed.
Q: What is the typical lead time for ALE111-S50 S1?
A: In-stock units ship within 3–5 business days. For larger quantities or specific revision requirements, lead time is 2–4 weeks depending on sourcing.
Q: Can I return a module if it does not match my system revision requirements?
A: Konmask’s 30-day DOA policy covers functional failures. Revision mismatches should be clarified at the RFQ stage — our technical team will verify compatibility before shipment.
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Contact: support@konmask.com | +0086 19859288691
