Product Core Brief
- Model: AAI141-H50/K4A00
- Brand: YOKOGAWA
- Series: CENTUM VP Analog I/O
- Core Function: 16-channel non-isolated 4–20 mA analog input with HART communication for CENTUM VP/CS 3000 FCS.
- Product Type: DCS Analog Input Module
- Key Specs: 16 channels | 4–20 mA DC | HART protocol | Non-isolated | Non-explosion-proof | ATK4A-00 KS cable adapter
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction
High-density analog input replacements often fail on two details: wrong channel count and the wrong terminal interface. The / is a 16-channel, 4–20 mA HART analog input module for YOKOGAWA CENTUM VP/CS 3000 field control stations. It is non-isolated and non-explosion-proof, and the option equips it with the KS cable interface adapter for the AEA4D terminal board, model ATK4A-00.
For maintenance teams, that combination matters. Sixteen inputs per card reduce slot consumption, while HART support allows smart transmitter diagnostics without a separate communicator. The KS cable interface also helps preserve existing field wiring when replacing a failed card—provided the terminal board matches.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Full Model | / |
| Product Type | Analog Input Module |
| Compatible System | YOKOGAWA CENTUM VP / CS 3000 DCS |
| Signal Range | 4–20 mA DC |
| Channel Count | 16 channels |
| Isolation | Non-isolated |
| Digital Communication | HART protocol |
| Explosion Protection | Non-explosion-proof (-5) |
| Option Code | /K4A00 — KS cable interface adapter for AEA4D terminal board (ATK4A-00) |
| Typical Application | Process temperature, pressure, flow, and level inputs with smart device diagnostics |
Key Selling Points & Differentiators
- 16-channel HART input: Consolidates more loops per slot while retaining smart transmitter diagnostics.
- Correct terminal interface: The option matches AEA4D terminal boards via ATK4A-00, reducing wiring rework during swap-outs.
- Direct CENTUM VP/CS 3000 fit: Designed for YOKOGAWA FCS racks, making it a practical OEM replacement for maintenance or spares.
- HART-enabled troubleshooting: Supports device-level diagnostics without adding a separate gateway.
- Not recommended for: Channel-isolated applications, 1–5 V DC or -10 to +10 V inputs, explosion-proof areas, or systems requiring AAI143/AAI135 isolation. For isolated 4–20 mA inputs, verify AAI143 or AAI135 instead.
Quality Transparency SOP
Surplus DCS analog input cards should be verified before shipment.
- Incoming visual QA: Inspect factory sealing, label integrity, connector pins, PCB condition, and corrosion indicators.
- Continuity and insulation check: Use a Fluke multimeter to verify terminal continuity and confirm the non-isolated channel architecture matches the datasheet expectation.
- Bench signal verification: Apply a calibrated 4–20 mA source and check channel response, offset, and linearity across multiple points.
- HART communication check: Verify HART recognition on at least one channel using a HART communicator or simulator.
- Final packing: Record serial/lot information, apply anti-static packaging, and seal with a condition label.
Technical Risk Avoidance
❗ Confirm the /K4A00 terminal match. This variant uses the KS cable interface for AEA4D terminal boards. Using the wrong terminal adapter can create wiring mismatches.
❗ Do not substitute for AAI143 or AAI135 without review. The AAI141-H50 is non-isolated. Replacing an isolated card with this module may introduce ground-loop or noise issues.
❗ Verify HART loop impedance. HART communication typically requires adequate loop resistance; too low a load can cause unstable communication.
❗ Check FCS slot and configuration. Confirm the engineering station tag mapping, HART enablement, and slot assignment before inserting the module into a live rack.
Buyer’s FAQ
Is this module genuine YOKOGAWA?
Yes. The / is an OEM YOKOGAWA CENTUM VP/CS 3000 analog input module. We supply it as new original/new surplus unless otherwise stated.
What does /K4A00 mean?
It indicates the KS cable interface adapter for the AEA4D terminal board, model ATK4A-00. This is critical for field wiring compatibility.
Can I replace an AAI143 or AAI135 with this module?
Not automatically. The AAI141-H50 is non-isolated with 16 channels. AAI143 and AAI135 variants are channel-isolated, and AAI135 has only 8 channels. Substitution requires engineering approval.
Does it support HART diagnostics?
Yes. The -H suffix indicates HART protocol support, allowing smart transmitter communication alongside the 4–20 mA analog signal.
What is the warranty and lead time?
Each module carries a standard 12-month functional warranty from shipment, excluding damage from incorrect installation or mismatched terminal adapters. In-stock units typically ship within 1–3 business days after payment confirmation.
