Yokogawa Analog Input Module | 16-Channel AAI143-H50/K4A00

Yokogawa AAI143-H50/K4A00 Analog Input Module

The AAI143-H50/K4A00 from Yokogawa delivers exceptional performance for industrial automation. This advanced analog input module handles 16 isolated channels with HART protocol support. Engineers trust this module for critical process measurement applications requiring high accuracy.

Core Technical Specifications

• Brand: Yokogawa
• Model: AAI143-H50/K4A00
• Product Type: Analog Input Module
• Input Channels: 16 fully isolated channels
• Signal Range: 4 to 20 mA DC current loop
• Maximum Input: 24 mA continuous
• Update Rate: 10 ms per channel
• Basic Accuracy: ±0.1% of span (±16 μA)
• Temperature Drift: ±16 μA per 10°C change
• Input Impedance: 270 Ω to 350 Ω (power on)
• Isolation Voltage: 1500 V AC for 1 minute
• HART Protocol: Full digital communication support
• Module Weight: 0.3 kg

Electrical Characteristics

• Transmitter Supply: 19.0 V to 25.5 V DC
• Current Limit: 25 mA maximum output
• Power Consumption: 230 mA at 5V, 540 mA at 24V
• Input Resistance: 500 kΩ or higher when powered off
• Wiring Support: 2-wire and 4-wire transmitters
• Connection: Pressure clamp terminals and MIL connectors

Installation & Configuration

• Includes KS cable interface adapter K4A00
• Compatible with AEA4D terminal boards
• Configurable per channel via setting pins
• Supports mixed transmitter types simultaneously
• Dedicated KS1 cables ensure reliable connections

Environmental Performance

• Operating Temperature: -40°C to +85°C
• Vibration Resistance: 5g @ 10-500 Hz
• Shock Immunity: 50g for 11 ms duration
• EMC Compliance: Industrial grade noise immunity
• Non-Explosive: Basic protection for standard areas

Packaging & Delivery

• Includes one complete AAI143-H50/K4A00 module
• Contains KS interface adapter ATK4A-00
• All necessary mounting hardware provided
• International shipping via FedEx, UPS, DHL
• Standard packaging ensures perfect condition

Warranty Coverage

• 12-month comprehensive warranty period
• Covers manufacturing defects and component failures
• Includes technical support and troubleshooting
• Warranty begins from the original purchase date

Professional FAQ

• What makes this module suitable for legacy system upgrades?
• The module provides modern HART capability while supporting traditional 4-20mA signals, giving you digital communication benefits without replacing existing field instruments.
• How does channel isolation prevent ground loop problems?
• Each input channel has individual isolation that breaks ground loops, preventing measurement errors and protecting against potential differences up to 1500V between channels.
• Can we mix 2-wire and 4-wire transmitters on one module?
• Yes, the per-channel configuration allows different transmitter types on any channel, providing maximum flexibility for your measurement system design.
• What practical advantages does the 10ms update rate provide?
• This fast scanning speed enables real-time process monitoring and control, capturing rapid process changes that slower modules might miss completely.
• How reliable is the KS cable connection in vibrating environments?
• The MIL-spec connector and pressure clamp terminals maintain secure connections even under continuous vibration, ensuring data integrity in tough industrial conditions.