Name: AI931B ABB 3KDE175512L9310 HART Analog Input Module 4-20mA ATEX
SKU: AI931B
Availability: InStock

Product details

ABB AI931B 3KDE175512L9310 HART Analog Input | S900 I/O Series

Product Brief
The ABB AI931B (3KDE175512L9310) is an analog input module for the S900 remote I/O system. It features 4 passive channels for 0/4…20 mA signals and supports HART communication. Certified for ATEX Zone 2 hazardous areas, it connects intrinsically safe field devices from Zone 2, 1 or 0. The module offers electrical isolation, short/break detection, G3 coating, and advanced diagnostics via FDT/DTM.

Technical specifications

Brand & Model
- Brand: ABB
- Model: AI931B
- Article number: 3KDE175512L9310
- Series: S900 I/O (Type B, Zone 2)
Module type
- Type: Analog input with HART
- Channels: 4
- Signal type: 0/4…20 mA (passive)
- HART: Yes – cyclic HART variables, HART frames via fieldbus
- SOE: N/A
- Redundancy: No (module itself)
- Intrinsic safety: Yes (for field devices)
Key features
- ATEX Zone 2 certified for hazardous locations
- Redundancy support: Power & communication (system level)
- Hot Configuration in Run
- Hot Swap – replace during operation
- Extended diagnostics via FDT/DTM
- G3 coating for corrosive atmospheres
- Short & break detection
- Electrical isolation: Input/bus, input/power
- Common return for all inputs
- Cyclic HART variables transmitted via fieldbus
Environmental & certification
- CE mark: Yes
- Hazardous location: ATEX Zone 2
- Corrosive atmosphere: ISA-S71.04 G3
- Operating temperature: -20…60°C
- Humidity: 93% RH at 40°C
- RoHS: 2011/65/EU
- WEEE: 2012/19/EU, small equipment
Mechanical data
- Width: 20 mm (0.79 in)
- Depth: 104 mm (4.09 in)
- Height: 104 mm (4.09 in)
- Weight: 0.13 kg (0.28 lbs)
- Mechanics: S900 system

Installation & setup

Mounting: On S900 backplane in Zone 2 hazardous area
Wiring: Connect intrinsically safe field devices (Zone 0/1/2)
Communication: PROFIBUS DP to control system
Replacement: Hot swap without power interruption

Maintenance & diagnostics

Self‑diagnostics: Short, break, loop status, HART communication
Configuration: FDT/DTM for detailed setup and HART variables
Auto‑diagnostics: Simplifies maintenance in hazardous areas
G3 coating: Protects electronics in corrosive environments

Compatibility & integration

System: ABB S900 remote I/O
Protocol: PROFIBUS DP with HART passthrough
Location: Zone 2 hazardous areas
Field devices: Intrinsically safe transmitters from Zone 0/1/2

Package contents & shipping

Includes: ABB AI931B module, documentation
Warranty: 12 months against defects
Couriers: FedEx, UPS, DHL – worldwide tracked

Typical applications

Oil & gas platforms (Zone 2 areas)
Chemical plants with hazardous atmospheres
Refinery process monitoring
Pharmaceutical manufacturing (Zone 2)
Offshore installations requiring HART data

FAQ – selection guide & experience

Can AI931B be installed in Zone 1 directly?
No. This Type B module is certified for Zone 2 only. For Zone 1, use S900 Type A modules.
Does it support both 0-20 mA and 4-20 mA?
Yes. Passive inputs accept both 0-20 mA and 4-20 mA signals from field devices.
How does HART transmission work with PROFIBUS DP?
The module passes HART frames digitally via the fieldbus. Cyclic HART variables are available in the control system.
What is the advantage of G3 coating?
G3 coating per ISA-71.04 protects against corrosive gases. Essential for chemical and offshore environments.
Can I replace the module while the system is live?
Yes. Hot swap is supported. No need to cut power to the backplane.