Yokogawa Analog I/O Modules HART | AAI141-S50/K4A00

Yokogawa AAI141 Series Analog I/O Modules

Yokogawa's AAI141-S50/K4A00 and AAI141-H50/K4A00 deliver high-density analog signal processing. These 16-channel modules handle 4-20mA signals with HART protocol support. They provide cost-effective solutions for non-isolated process applications requiring reliable performance.

Key Specifications Comparison

• Brand: Yokogawa
• Models: AAI141-S50/K4A00 & AAI141-H50/K4A00
• Input Channels: 16 channels non-isolated
• Signal Range: 4 to 20 mA DC
• Maximum Input Current: 27 mA
• Basic Accuracy: ±0.1% (±16 μA)
• Update Rate: 10 ms per channel
• Response Time: 100 ms step response
• HART Protocol: Standard and digital versions
• Module Weight: 0.2 kg each

Electrical Performance Details

• Input Impedance: 400Ω to 1000Ω (power on)
• Off-State Resistance: 500 kΩ minimum
• Transmitter Supply: 14.8V to 26.4V DC
• Current Limit: 27 mA maximum output
• Power Consumption: 310 mA at 5V, 450 mA at 24V
• Temperature Drift: ±16 μA per 10°C change

Installation & Connectivity

• Includes KS cable interface adapter K4A00
• Pressure clamp terminals for secure wiring
• MIL connector cable compatibility
• Dedicated KS cable connections
• Per-channel transmitter type configuration
• Supports both 2-wire and 4-wire devices

Environmental Specifications

• Operating Temperature: -20°C to +70°C
• Storage Temperature: -40°C to +85°C
• Humidity Range: 5% to 95% non-condensing
• Vibration Resistance: 2g @ 10-150 Hz
• EMC Immunity: Industrial noise environment rated
• Protection Class: Standard industrial non-explosive

Package Contents

• One analog I/O module (specified model)
• KS cable interface adapter unit
• All necessary mounting components
• Installation and setup documentation
• Compatible connection accessories

Shipping & Delivery

• Express worldwide shipping available
• Carrier options include FedEx, UPS, DHL
• Trackable shipment with status updates
• Professional packaging ensures safe transit
• Typically ships within 1-2 business days

Warranty Information

• 12-month comprehensive coverage period
• Protection against manufacturing defects
• Includes replacement for faulty components
• Technical support throughout warranty term
• Simple claim process for quick resolution

Technical FAQ

• What practical difference exists between S and H suffix models?
• The H version offers enhanced digital communication capabilities while the S model provides standard HART functionality for basic applications.
• How does non-isolated design impact system installation?
• Non-isolated channels share common grounds, reducing component count and cost while requiring careful attention to ground potential differences in the system design.
• Can these modules handle overload conditions safely?
• Yes, the 27mA current limit protects against temporary overloads while the robust design withstands industrial electrical noise and transient conditions effectively.
• What advantages does the 100ms response time offer?
• This response speed captures most process variations accurately while filtering noise, making it ideal for typical industrial process monitoring and control applications.
• How reliable are the pressure clamp terminals?
• These terminals maintain consistent connection pressure over time, preventing loose wires in vibrating environments and ensuring long-term measurement stability.