Yokogawa AAI143-H50/K4A00 Analog Input Module · 16-Channel Isolated HART
Yokogawa FIO Module
16-Channel Analog Input Module
4–20 mA Analog Input
Place of Origin:
JAPAN
Brand Name:
Yokogawa
Yokogawa FIO Module
,16-Channel Analog Input Module
,4–20 mA Analog Input
Yokogawa AAI143-H50/K4A00 Analog Input Module · 16-Channel Isolated HART
Analog input for FIO systems
AAI143-H50/K4A00 is a Yokogawa analog input module for 16 isolated 4 to 20 mA input channels. The HART version supports digital communication with HART field devices, while the /K4A00 option uses the KS Cable Interface Adapter.
Key technical data
Additional technical data
Power OFF: 500 kΩ or more
25.5 V or less at 0 mA
Output current limit: 25 mA
540 mA at 24 V DC
HART communication details
HART variables can be read by HART Command #3. Up to 16 HART devices and up to 32 HART variables can be handled per module.
HART multidrop supports up to 5 input devices per channel. Analog data value and burst function are not available in multidrop operation.
HART variable refresh is 1 second per device. With 16 devices connected, the refresh cycle is 17 seconds per ESB bus connection.
HART protocol revision: 5.7. Communication type: serial half duplex, start-stop synchronization, 1200 ±2 bps FSK.
FIO system position
The module belongs to the Yokogawa Fieldbus I/O (FIO) family. FIO I/O modules are installed in node units and communicate with the Field Control Unit through the FIO communication path.
Configuration check
Suffixes and terminal-interface options are configuration-specific. Check the complete part number before treating another AAI143 variant as a direct replacement.
Practical checks during maintenance
Signal path
Check the field-side current loop, transmitter wiring, channel setting and module connection when an input value is missing or unstable.
Maintenance focus
For HART-related issues, separate the analog signal check from the digital communication check. Confirm the field device and communication path before replacing the module.
AMIKON service & contact
DOA or quality issues should be reported before return. Damage caused by incorrect installation, wiring or misuse is outside the warranty scope.
Frequently asked questions
Is AAI143-H50/K4A00 the correct part for a Yokogawa FIO installation?
Does this model support HART communication?
What should I check before ordering this module?
Can another AAI143 suffix be used as a direct replacement?
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