ABB AI931B Analog Input Module 4 Channels

ABB AI931B Analog Input Module for Hazardous Areas

Product Introduction

The ABB AI931B also known as 3KDE175512L9310 belongs to the S900 remote I/O system. You can install this system directly in the field, even in hazardous locations. For Zone 2 areas, this type B module provides a safe and cost-effective solution.

Additionally, the unit connects intrinsically safe field devices located in Zone 0, Zone 1, or Zone 2. It communicates with the control system via PROFIBUS DP. This approach reduces marshalling and wiring costs significantly.

Key Features and Benefits

Passive Inputs and HART Support

The ABB AI931B offers four passive channels for 0-20 mA or 4-20 mA signals. Each input includes short circuit and break detection. Furthermore, the module transmits HART frames via the fieldbus and supports cyclic HART variables.

Hot Swap and Redundancy

You can replace this module during operation without interrupting the primary voltage. Hot configuration in run and hot swap functionality are both supported. For power and communication, redundancy options are available to increase system availability.

Diagnostics and Coating

Extended diagnostics help you identify issues quickly. Excellent configuration and diagnostics are possible using FDT/DTM tools. Additionally, all components receive G3 coating according to ISA-S71.04, which protects against corrosive atmospheres.

Technical Specifications

Input Characteristics

The 3KDE175512L9310 has four analog input channels. The signal type is 4-20 mA passive. Electrical isolation exists between input and bus, as well as between input and power. A common return is shared for all four inputs.

Environmental and Certification

The ABB AI931B carries ATEX certification for Zone 2 hazardous locations. It also meets CE mark requirements. For humidity, the module operates at 93 percent plus or minus 3 percent relative humidity at 40 degrees Celsius. The maximum ambient temperature ranges from -20°C to 60°C.

Compliance and Dimensions

RoHS compliance follows DIRECTIVE 2011-65-EU, and WEEE compliance follows DIRECTIVE 2012-19-EU. The WEEE category is small equipment with no external dimension exceeding 50 cm. The module measures 20 mm in width, 104 mm in depth, and 104 mm in height. Its weight is 0.13 kg.

Mechanical and Installation Data

The AI931B uses the S900 mechanics. It fits into the S900 I/O system rack. You can install the entire system directly in non-hazardous areas or in Zone 1 or Zone 2 depending on the variant selected. The system is sturdy, error-tolerant, and easy to service.

Integrated disconnection mechanisms allow replacement during live operation. Consequently, you do not need to interrupt the primary voltage to exchange power supply units. This feature minimizes downtime significantly.

Installation Guidelines

First, mount the S900 rack in your chosen location. Ensure the ambient temperature stays within -20°C to 60°C. Next, insert the ABB AI931B module into the appropriate slot. The hot swap feature lets you do this without powering down the system.

Then connect your passive 4-20 mA field devices to the input terminals. For intrinsically safe devices from Zone 0 or Zone 1, verify that the cabling meets the safety requirements. Finally, configure the module using PROFIBUS DP and FDT-DTM tools for diagnostics and HART communication.

Packaging List

• ABB AI931B analog input module (3KDE175512L9310) – 1 unit

• Product identification label – 1 piece

• Installation instruction sheet – 1 copy

Note: Cables, rack, power supplies, certificates, and warranty documents are not included.

Shipping Methods

We ship worldwide using Fedex, UPS, or DHL.

Frequently Asked Questions (FAQ)

1. Can I use the ABB AI931B with intrinsically safe devices from Zone 0?
Yes, you can connect intrinsically safe field devices installed in Zone 0, Zone 1, or Zone 2 to this module.

2. Does this module support HART communication?
Yes, the 3KDE175512L9310 transmits HART frames via the fieldbus and also supports cyclic HART variables.

3. Can I replace the module while the system is running?
Absolutely. The hot swap functionality allows you to exchange the ABB AI931B without interrupting the primary voltage.

4. What is the G3 coating for?
The G3 coating protects all components against corrosive atmospheres. It meets the ISA-S71.04 standard for harsh industrial environments.

5. Is redundancy available for this module?
Redundancy is supported for power and communication. However, the AI931B itself does not have built-in channel redundancy. You can configure external redundancy at the system level.