Yokogawa AAI143 Series Analog Input Module AAI143-S50/K4A00 16-Channel

Description

Product Introduction

• Brand: Yokogawa
• Model: AAI143-S50/K4A00
• Series: AAI143 Analog Input Series
• This module collects current signals with high stability.
• It supports dense channel layouts in control systems.
• Each channel works with full electrical isolation.
• The design suits long-term industrial operation.

Core Selling Points

• 16 isolated channels save rack space.
• Stable 4–20 mA signal handling.
• High noise resistance in harsh plants.
• Built-in transmitter power reduces wiring cost.
• Fast updates support smooth control loops.

Electrical and Measurement Data

• Input Signal: 4 to 20 mA
• Input Channels: 16, isolated
• Allowable Input: Up to 24 mA
• Accuracy: ±16 µA
• Resolution: High precision current detection
• Linearity: Stable across full scale
• Data Update Cycle: 10 ms
• Temperature Drift: ±16 µA per 10 °C
• Frequency Behavior: Optimized for process signals

Input Resistance Characteristics

• Powered state: 270 to 350 ohms
• Unpowered state: 500 kilo-ohms or higher
• This protects field devices during shutdown.

Isolation and Safety Performance

• Isolation between input and system circuits.
• Withstands 1500 V AC for one minute.
• Reduces ground loop risk.

Transmitter Power Capability

• Supports two-wire and four-wire transmitters.
• Channel mode set by onboard pin.
• Output voltage up to 25.5 V.
• Current limit protects field instruments.

System Power Requirements

• 5 V DC consumption: 230 mA
• 24 V DC consumption: 540 mA
• Efficient design lowers cabinet heat.

Mechanical Data

• Approximate weight: 0.3 kg
• Compact form fits standard racks.

Suffix and Option Details

• -S indicates standard construction.
• 5 means no explosion protection.
• 0 represents basic type.
• /K4A00 includes KS cable interface adapter.

Installation and Use

• Install on compatible Yokogawa I/O base.
• Confirm wiring before power-up.
• Use shielded cables for best accuracy.

Typical Application Fields

• Flow and pressure measurement systems.
• Chemical and refinery processes.
• Power and utility monitoring.
• Factory automation lines.

Package and Warranty

• One original AAI143-S50/K4A00 module.
• Industrial protective packing.
• 12-month warranty.
• Shipping via FedEx, UPS, or DHL.

Professional FAQ

• How does isolation help system stability?
• It blocks noise from field wiring.
• Is this module suitable for large signal cabinets?
• Yes. Sixteen channels reduce slot usage.
• Can it power loop transmitters directly?
• Yes. Built-in supply supports common sensors.
• What should I check before selecting this model?
• Confirm signal type and channel count.
• Is it a good choice for system upgrades?
• Yes. It fits many existing Yokogawa racks.

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