Yokogawa|AAI135-H53|Analog Input Module

Description

Features

• 8 isolated input channels for 4–20 mA analog signals
• Supports HART communication for digital data exchange with field devices
• Enables dual-redundant configuration for high reliability
• Module-level isolation between channels and system
• Multiple connection options: pressure clamp terminals, MIL cables, and dedicated KS1 cables

Technical Specifications

Module Overview

• Model: AAI135-H53
• Channels: 8 isolated input channels
• Signal Range: 4 to 20 mA (current input)
• Communication: HART protocol compatible
• Isolation: Channel-to-system and channel-to-channel isolation (500 V AC for 1 minute)

Electrical Specifications

• Withstanding Voltage:
  • Input to system: 500 V AC for 1 minute
  • Between input 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
• Accuracy: ±16 µA
• Data Update Period: 10 ms
• Transmitter Power Supply: 15.0 V (min.) to 29.3 V (max.) (varies with input current)
• Temperature Drift: ±16 µA/10 °C

Mechanical & Connectivity

• Weight: 0.3 kg
• Connection Types:
  • Pressure clamp terminals
  • MIL connector cable
  • Dedicated KS1 cable (with ATI3A/ATK4A adapters)
• Terminal Blocks:
  • Single configuration: ATI3S, ATK4A
  • Dual-redundant configuration: ATI3D, AEA4D