Yokogawa AAI543-S50 S1
Yokogawa AAI543-S50 S1
Yokogawa AAI543-S50 S1
Yokogawa AAI543-S50 S1
Yokogawa AAI543-S50 S1
Yokogawa AAI543-S50 S1
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AAI543-S50 S1

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The Yokogawa AAI543-S50 S1 is a precise 4–20 mA current output module for Exa DCS and automation systems, ensuring reliable analog signal control in process applications.
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Technical specifications for AAI543-S50 S1

  • Manufacturer:
    Yokogawa
  • Part Number:
    AAI543-S50 S1
  • Product Family:
    Centum CS-Centum VP
  • Product Type:
    Output Module
  • Input:
    4 to 20 mA
  • Output:
    4 to 20 mA
  • Allowable input current/ voltage:
    25 mA
  • Current input:
    25 mA
  • Power ON:
    400 Q (at 20 A10 000 (at 4 mA)
  • Power OFF:
    500 kQ or larger
  • Weight:
    0.32 kg
  • Estimated shipping dimensions:
    3.2x10.7x13 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Japan
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Monitoring & Control Certifications & Standards Applications

Features:

  • High-Density 16-Channel Isolated Outputs
  • Built-in Circuit-Open Detection
  • Dual-Redundant Configuration with Fast Switch-Over
The YOKOGAWA AAI543-S50 S1 provides 16 individually isolated 4-20 mA channels, eliminating ground loop interference and simplifying wiring for large-scale I/O applications.

With automatic detection when loop current drops below 0.65 mA, the YOKOGAWA AAI543-S50 S1 enhances system diagnostics and helps operators quickly identify field wiring or device failures.

The YOKOGAWA AAI543-S50 S1 supports 1:1 module redundancy. When a failure occurs, the system switches to the standby module in ≤100 ms (standard response), minimizing production interruptions in critical processes.

The AAI543-S50 S1 YOKOGAWA Isolated Analog Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
YOKOGAWA AAI543-S50 S1 Isolated Analog Output Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
YOKOGAWA AAI543-S50 S1 Isolated Analog Output Module

General

  • Manufacturer YOKOGAWA
  • Model AAI543-S50 S1
  • Condition New Original ready stock
  • Product Family AAI543-H03 S1,AAI543-S03 S1,AAI543-S53 S1
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Real-Time Current Loop Supervision – Continuously monitors each output channel for open-circuit conditions (<0.65 mA threshold), enabling immediate fault alerts.
  • Redundant Architecture – In critical loops, two identical YOKOGAWA AAI543-S50 S1 modules can be configured as primary and standby to achieve bumpless switch-over.
  • Load Flexibility – Drives field devices with load resistance from 0 to 750 Ω, compatible with most actuators and positioners.
  • High-Precision Signal Generation – With ±48 μA accuracy and 10 ms data refresh, the module ensures fast and accurate response to control system commands.
  • CE Marked – Complies with essential EU health, safety, and environmental protection requirements for industrial equipment.
  • UL/CSA Recognition – Manufactured under stringent electrical safety standards acceptable for North American installations.
  • 1500 V AC Isolation – Between output channels and the system bus, providing robust protection against surges and electrical noise.
  • Industrial Temperature Range – Suitable for operation from -20°C to +70°C, allowing deployment in harsh, non-conditioned environments without additional cooling.
  • Oil & Gas Refineries – Precisely controls large valves and dampers in fractionating columns and hydrotreating units.
  • Chemical & Petrochemical Plants – Delivers stable 4-20 mA signals to modulate pumps, heaters, and reactors under continuous operation.
  • Power Generation – Provides reliable positioning of turbine bypass valves and boiler feedwater regulators.
  • Water & Wastewater Treatment – Automates chemical dosing pumps and large actuated valves in filtration and disinfection processes.
Description
The Yokogawa AAI543-S50 S1 is a Current Output Module designed for use with Yokogawa's Exa series of Distributed Control Systems (DCS) and other automation systems. 

This module is specifically built to provide precise, reliable, and accurate 4-20mA current output signals, making it an essential component in process control applications where continuous monitoring and control of analog signals are required.

The Yokogawa AAI543-S50 S1 is designed to support dual-redundant configurations, ensuring uninterrupted process control even in the event of a module failure. With a fast 10 ms data update period and built-in open-circuit detection (triggered below 0.65 mA), the Yokogawa AAI543-S50 S1 significantly enhances system reliability and diagnostic capability, making it an ideal choice for mission-critical automation environments.

Designed to withstand harsh industrial conditions, the Yokogawa AAI543-S50 S1 operates within a wide temperature range of -20°C to +70°C and provides 1500 V AC isolation between the output channels and the system bus. It supports flexible field wiring options including pressure clamp terminals, MIL cables, or dedicated KS1 cables. Whether deployed in oil refineries, chemical plants, or power generation facilities, the Yokogawa AAI543-S50 S1 delivers consistent and robust analog output performance, helping engineers achieve precise final control element positioning without signal interference or ground loop issues.
Alternative Names
AAI543S50S1 AA1543-S50 S1 AAI543-S5O S1 AAI543-S53 S1 AAI543-H03 S1 AAI143-S53 S1 AAI143-S50 S1 AAI143-S03 S1
Technical notes
The YOKOGAWA AAI543-S50 S1 is a 16-channel, isolated 4-20 mA analog output module designed for Yokogawa’s CENTUM VP and CS 3000 DCS systems. This standard version (Suffix 5) supports dual-redundant configurations with a standard switch-over response time of ≤100 ms, ensuring reliable continuous control without HART communication.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the maximum load that can be connected to the AAI543-S50 S1 output?
The output can drive a load of up to 500 ohms. Exceeding this load may affect the accuracy and stability of the output signal.
Can the AAI543-S50 S1 module be used with other automation systems besides Yokogawa Exa DCS?
Yes, while it is designed for use with Yokogawa Exa DCS systems, the AAI543-S50 S1 is also compatible with other automation systems that support 4-20mA analog current loops, making it versatile for different control environments.
What is the power supply requirement for the AAI543-S50 S1 module?
The AAI543-S50 S1 requires a 24V DC power supply, which is typically provided by the connected DCS or an external power source.
Does the AAI543-S50 S1 with a warranty?
Yes, the AAI543-S50-S1 includes a free 1-year Apter Power warranty.
Is the AAI543-S50 S1 100% brand new?
Yes. New and original.