AAI143-H50/K4A00 Yokogawa FIO Datasheet & Technical Manual

Analog Input Module Yokogawa AAI143-H50/K4A00 HART

Analog Input Module Yokogawa AAI143-H50/K4A00 HART

Disponibilidad: 10 Quedan en stock

Yokogawa AAI143-H50/K4A00 Analog Input Module The Yokogawa AAI143-H50/K4A00, also cataloged as the AAI143 Analog Input Module, operates as a dedicated...

Código: AAI143-H50/K4A00

Manufacturer: Yokogawa
Product No.: AAI143-H50/K4A00
Product Type: Módulos de entrada analógica
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Descripción Reseñas

Yokogawa AAI143-H50/K4A00 Analog Input Module

The Yokogawa AAI143-H50/K4A00, also cataloged as the AAI143 Analog Input Module, operates as a dedicated hardware component for 4-20 mA DC signal acquisition with integrated digital communication within CENTUM VP Distributed Control System (DCS) platforms.

Suffix Breakdown & Model Matrix

AAI143: 16-Channel Isolated Analog Input Module (4-20 mA DC)
-H: With digital communication (HART protocol)
5: With no explosion protection
0: Basic type
/K4A00: With KS Cable Interface Adapter (For connecting AEA4D Terminal Board) [Model: ATK4A-00]

Hardware Specifications

Parameter	Specification
Model	AAI143-H50/K4A00
Brand	Yokogawa
Origin	Japan
Weight	2.0 kg (Shipping Weight) / Module: 0.30 to 0.45 kg
Operating Temp	-20 deg C to +70 deg C
Power Consumption	230 mA (5 V DC), 540 mA (24 V DC)
Channels	16 isolated channels
Signal Type	4-20 mA DC
Allowable Input Current	Up to 24 mA
Input Resistance	270 to 350 ohms (Power ON), >= 500 kohms (Power OFF)
Accuracy	+/- 16 uA
Temperature Drift	+/- 16 uA per 10 deg C
Data Update Period	10 ms
Transmitter Power Supply	19.0 to 25.5 V DC (limit 25 mA)
Isolation	1500 V AC between input and system (1 min)

4-20 mA HART Loop Protocol Integration

The AAI143-H50/K4A00 executes continuous analog-to-digital conversion of 4-20 mA DC signals while concurrently processing HART digital telemetry superimposed on the loop. The "H" suffix denotes hardware native modulation/demodulation components that extract field device diagnostics, calibration parameters, and secondary process variables. Operating alongside the /K4A00 KS Cable Interface, the module routes these secondary digital packets directly to host controller registers without introducing latency to the high-speed 10 ms analog update scan.

Frequently Asked Questions

Q: What is the primary functional role of the /K4A00 option on this module?

A: The /K4A00 suffix indicates the presence of a dedicated KS Cable Interface Adapter (Model ATK4A-00). This physical adapter allows direct connection between the module and an external AEA4D Terminal Board using standard KS cables.

Q: How does the input impedance characteristic behave under loss-of-power scenarios?

A: During normal operation (Power ON), the channel input resistance remains between 270 and 350 ohms to load the loop properly. If system power is lost (Power OFF), the circuit automatically shifts to a high-impedance state of 500 kohms or greater, electrically decoupling the channel.

Q: Does this module support redundant pairing inside the node nest?

A: Yes. The AAI143-H50/K4A00 supports dual-redundant configurations when mounted in paired slots of an FIO base plate. If a hardware fault occurs, the control system switches input tracking to the adjacent backup unit without signal dropout.

Field Installation Guidelines

Mechanical Installation: Align the module rails within the selected FIO base plate slot. Slide the unit inward until the top and bottom lock tabs latch onto the chassis. Verify the mechanical alignment of the /K4A00 interface adapter.
Intrinsically Safe Boundaries: Suffix "5" and "0" confirm that the module contains no internal spark protection or galvanic barriers. For field transmitters located in hazardous zones, external zener barriers or galvanic isolators must be installed in series with the input lines.
Electrical Termination: Connect the AEA4D terminal board to the adapter using the recommended KS1 interface cable. Ensure all shield wires are continuously bonded back to the dedicated cabinet instrument earth busbar to preserve the 1500 V AC isolation rating.
Power & Thermal Loading: Ensure the 24 V DC system supply meets the 540 mA load requirement per module under full transmitter loop load. Provide adequate cabinet venting to maintain operating temperatures below 70 deg C (or 60 deg C for optimal thermal stability).

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