Introduction

The AAI135-H00/K4A00 Analog Input Module delivers reliable, high-accuracy analog signal conversion for Yokogawa process control systems. Its robust industrial design, modular form factor, and flexible input support make it ideal for complex and critical automation applications. The module ensures consistent data acquisition, enabling precise process control and predictive maintenance.

Technical Specifications

Parameter	Details
Model	AAI135-H00/K4A00
Type	Analog Input Module
Dimensions	107.5 × 32.8 × 130 mm
Weight	0.3 kg
Input Types	4–20 mA, 0–10 V, thermocouples (selectable)
Resolution	16-bit
Isolation	Galvanic isolation per channel
Response Time	~50 ms per channel
Operating Temperature	-10°C to 60°C
Compatibility	Yokogawa DCS and PLC systems
Mounting	Rack or DIN rail

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Model	Description
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AAI140	Isolated analog input module
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Popular Related Models

Model	Description
AAI130	Standard analog input module
AAI131	4-channel analog input module
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AAI133	Thermocouple input module
AAI134	High-speed input module
AAI135	Universal analog input module
AAI136	Multi-channel module with diagnostics
AAI137	Process input module with isolation
AAI140	Isolated analog input module
AAI150	Redundant analog input module

Applications

The Yokogawa AAI135-H00/K4A00 Analog Input Module is specifically designed for precise analog signal acquisition in industrial process automation systems. It is widely deployed in chemical plants, oil & gas facilities, power generation, and water treatment plants, converting field analog signals such as temperature, pressure, flow, and level into accurate digital data for monitoring and control.

Advantages

High-precision signal conversion ensures reliable process measurements
Flexible input support for 4–20 mA, 0–10 V, and selected thermocouples
Compact, modular design enables efficient use of control cabinet space
Industrial-grade reliability withstands vibration, electrical noise, and temperature fluctuations
Seamless integration with Yokogawa DCS and PLC systems

FAQs

Which signal types are supported by this module?
4–20 mA, 0–10 V, and select thermocouple inputs.
What is the input resolution?
16-bit resolution for precise analog-to-digital conversion.
Can multiple channels be processed simultaneously?
Yes, multiple analog input channels are supported.
What is the response time per channel?
Approximately 50 milliseconds per channel.
Is galvanic isolation provided for the inputs?
Yes, each channel is galvanically isolated to prevent interference.
What is the operating temperature range?
-10°C to 60°C.
Is it compatible with Yokogawa DCS systems?
Fully compatible with Centum VP, Centum CS, and other Yokogawa automation systems.
Does it provide diagnostics for sensor faults?
Yes, it can detect open or short circuits in the connected sensors.
Can the module be hot-swapped?
Yes, it supports hot-swap installation to minimize system downtime.
What wiring practices are recommended for signal integrity?
Use shielded twisted-pair cables for 4–20 mA or voltage signals and maintain proper grounding.