Yokogawa AAI835-H00 Analog I/O Module

Model & Suffix Explanation

• AAI835: Integrated Analog I/O Module, 4-channel input / 4-channel output, isolated, 4–20 mA signal
• H: With HART digital communication protocol
• 0: No explosion protection
• 0: Basic type

Core Electrical Specifications

• I/O Channels: 4 input channels + 4 output channels, all isolated
• Signal Type: Input & Output both support 4 to 20 mA
• Maximum Allowable Input Current: 25 mA
• Withstanding Voltage:
  • Between input/output and system: 500 V AC for 1 minute
  • Between input/output channels: 500 V AC for 1 minute
• Input Resistance:
  • Power ON: 290 Ω (at 20 mA) to 450 Ω (at 4 mA)
  • Power OFF: 500 kΩ or higher
• Allowable Load Resistance: 0 to 750 Ω
• Circuit-open Detection: Less than 0.65 mA
• Measurement Accuracy:
  • Input: ±16 µA
  • Output: ±48 µA
• Data Update Period: 10 ms
• Transmitter Power Supply: 15.0 V minimum at 20 mA, 29.3 V maximum at 0 mA
• Temperature Drift: ±16 µA / 10 °C
• Maximum Current Consumption: 360 mA (5 V DC), 450 mA (24 V DC)
• External Connection: Pressure clamp terminal, MIL connector cable, dedicated KS1 cable
• Compatible Accessories:
  • Single terminal board: ATI3S
  • Dual redundant terminal board: ATI3D
  • Adapters: ATK4A, ATB3A
  • Terminal boards: AEA4D, AEA3D
• HART Communication: Available
• Weight: 0.3 kg

Key Features

• Integrated 4-in / 4-out analog I/O combined module
• Full galvanic isolation among all input and output channels
• Compatible with standard 4–20 mA industrial process signals
• Built-in HART communication for field device configuration
• High measurement accuracy and fast data update rate
• Circuit-open fault detection function for output loops
• Wide compatibility with Yokogawa terminal boards and adapters
• Compact size and reliable operation in industrial environments

Typical Applications

• Yokogawa CENTUM CS 3000 / VP distributed control systems
• Combined analog signal monitoring and control in process industries
• Field transmitter signal acquisition and actuator driving control
• Petrochemical, power generation and manufacturing automation
• Integrated loop control applications in industrial plants

Packaging List

• 1 × Yokogawa AAI835-H00 Analog I/O Module
• Installation and wiring documentation

FAQ

1. What is the channel configuration of AAI835-H00?

   It has 4 isolated input channels and 4 isolated output channels.

2. Does this module support HART communication?

   Yes, HART protocol communication is fully available.

3. What signal range does the module support?

   Both input and output adopt standard 4 to 20 mA current signals.

4. What is the allowable output load resistance?

   0 to 750 Ω.

5. What is the module weight?

   Approximately 0.3 kg.