AAI841-S00 Yokogawa 8/8 Analog I/O Module | HART 4-20mA

AAI841-S00 – Analog I/O Module

Brand: Yokogawa
Model: AAI841-S00
Series: AAI841 Analog I/O Module

Product Overview

This module provides 8 analog inputs and 8 analog outputs for up to 8 control loops. It supports 4-20 mA signals on both sides. You can use it in dual-redundant setups for higher reliability. The module works with 2-wire or 4-wire transmitters, selectable per channel via setting pins. HART communication is available for smart device integration.

Key Features

• 8 inputs + 8 outputs – non-isolated design
• Signal type: 4-20 mA (input and output)
• High accuracy: ±16 μA (input), ±48 μA (output)
• Fast response: 100 ms (input), 40 ms (output)
• Data update: every 10 ms
• Transmitter power: 14.8 V (min) to 26.4 V (max)
• HART communication: built-in support

Technical Specifications

• I/O channels: 8 inputs / 8 outputs, non-isolated
• Input signal: 4 to 20 mA
• Output signal: 4 to 20 mA
• Allowable input current: 25 mA max
• Input resistance (power ON): 400 Ω (at 20 mA) to 1000 Ω (at 4 mA)
• Input resistance (power OFF): 500 kΩ or higher
• Allowable load resistance: 0 to 750 Ω
• Circuit-open detection: triggers below 0.65 mA (output)
• Temperature drift: ±0.1 % per 10 °C
• Current consumption: 310 mA (5 V DC), 500 mA (24 V DC)
• Weight: 0.3 kg

Connections & Wiring

• External connection options:
  • Pressure clamp terminal
  • KS cable
  • MIL connector cable
• 2-wire or 4-wire transmitter setting: per channel via setting pin

Expert Review

This module delivers reliable analog I/O for process control. The 10 ms update rate keeps data fresh for fast loops. Accuracy is solid at ±16 μA for inputs. The built-in HART support adds value for smart field devices. A dependable choice for Yokogawa systems.

Manager’s Insight

For plant managers, this module simplifies loop integration with 8 channels in one unit. The dual-redundant option boosts system availability. Fast step response (40 ms output) helps with tight control. Good balance of performance and cost for medium-scale applications.

Compatible Devices & Applications

• Compatible with: Yokogawa CENTUM VP, ProSafe-RS, and other DCS systems
• Typical applications:
  • Flow and pressure control loops
  • Temperature monitoring
  • Level measurement
  • Chemical and petrochemical processes

Comparison with Similar Models

• AAI841-H00 – HART enabled, isolated version
• AAI543-S00 – 4 inputs / 4 outputs, smaller footprint
• AAI841-S00 (this model) – 8/8 channels, non-isolated, standard type

Professional FAQ

• What is the update time for all channels?
  The data update period is 10 ms for all I/O.
• Can I mix 2-wire and 4-wire transmitters?
  Yes, set each channel individually using the setting pins.
• Does this module support HART?
  Yes, HART communication is available on this module.
• What is the output step response time?
  The output responds in 40 ms to a step change.
• Is the module hot-swappable?
  Check your system manual; dual-redundant configurations may support it.

Selection & Purchase Guide

• Warranty: 12 months against manufacturing defects.
• Shipping: 12-24 hours dispatch.
• Carriers: FedEx, UPS, DHL.
• Choose this for 8-loop analog control with HART needs.
• For isolated requirements, consider AAI841-H00.

Contact Information
📧 sales@powergearx.com
📱 +86 18030005825

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