Description

Product Description

Overview
The AAI135-H00 from Yokogawa is an 8-channel analog input module optimized for precise 4 to 20 mA current measurements. Each channel is fully isolated, supporting stable operation in high-noise industrial environments. This module features HART digital communication capability and a KS Cable Interface Adapter (Model ATK4A-00) for secure connection to AEA4D terminal boards. Its robust design ensures reliable performance under varying operating conditions.

Technical Specifications

• Model: AAI135-H00

• Module Type: Analog Input Module (Current Input)

• Input Channels: 8, fully isolated

• Input Signal Range: 4 to 20 mA

• Maximum Input Current: 25 mA

• Input Resistance:

• Power ON: 290 ohms at 20 mA, 450 ohms at 4 mA

• Power OFF: 500 k ohms minimum

• Withstanding Voltage:

• Between input and system: 500 V AC, 1 minute

• Between input channels: 500 V AC, 1 minute

• Accuracy: ±16 microamps

• Communication: HART protocol

• Terminal Adapter: KS Cable Interface Adapter (Model ATK4A-00)

• Operating Temperature: -10 to 55 degrees Celsius (typical)

• Weight: 0.3 kg

Applications

• Multi-channel current signal monitoring

• Integration with Yokogawa DCS and PLC systems

• Critical process control requiring channel isolation

• Data acquisition in high-noise or harsh environments

FAQ

Q: Can the AAI135-H00 support voltage input signals?
A: No, this module is specifically designed for 4 to 20 mA current input signals only.

Q: Is the module compatible with other terminal boards?
A: Proper operation requires the KS Cable Interface Adapter (Model ATK4A-00) for connection to AEA4D terminal boards.

Similar Models Comparison

• AAI135-H01: 4-channel version of analog input module for smaller systems.

• AAI143-H00: 16-channel input module offering higher channel density with similar HART support.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems