Description
AI3281 | TSxPlus Analog Input Module | Safety System Signal Acquisition
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AI3281 |
| Manufacturer | Beijing Consen Technologies |
| System | TSxPlus V2.0 |
| Module Type | Analog Input Module |
| Certified Variant | AI3281-A-V002 |
| Safety Certification Reference | TÜV 968/FSP 1454.02/22 |
| Input Terminal Modules | T-AI1601 / T-AI1602 / T-AI3201 |
| Application | Safety-related analog signal acquisition |
| Main Firmware | AI3281 application, bootloader and FPGA firmware |
| HART Support | HART function circuitry is documented in the certified revision |
| System Architecture | TSxPlus safety I/O architecture |
The TÜV revision documentation is particularly useful for procurement because it identifies the exact AI3281-A-V002 hardware revision and records its application firmware, bootloader, FPGA, HART-function CPLD, and power-MCU firmware components.
Important specification note: Public reseller listings disagree substantially about channel count, input range, resolution, sampling rate, communication interfaces, and supply voltage. I would not use those values for an engineering replacement specification without the TSxPlus installation documentation or the module nameplate.
Product Introduction
What the AI3281 Does
The is an analog input module used in the TSxPlus V2.0 safety system from Beijing Consen Technologies. Its role is to acquire analog process signals and make those measurements available to the safety controller for monitoring, logic processing, and safety-related functions. The TÜV documentation explicitly classifies as an Analog Input Module.
The certified architecture also separates the electronic AI module from the field termination hardware. T-AI1601, T-AI1602, and T-AI3201 are separately identified as Analog Input Terminal Modules, so they should not automatically be treated as interchangeable with .
AI3281
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
For a safety-system I/O replacement, the main risk is not simply finding a module with the same model number. The hardware revision, firmware set, terminal module, chassis architecture, and certified system configuration all affect whether the replacement is appropriate.
Typical Applications
- TSxPlus safety instrumented systems — analog process measurement acquisition.
- Industrial process safety — pressure, temperature, level, flow, and other analog measurements where supported by the configured field interface.
- Oil and gas facilities — safety-related process monitoring and shutdown architectures.
- Power and industrial plants — analog input acquisition within TSxPlus safety control stations.
The TSxPlus hardware platform uses a main chassis, power supply, processor, communication modules, bus interfaces, and dedicated I/O modules. is explicitly listed as the platform’s analog input module.
Technical Pitfalls to Avoid
- Do not automatically identify as a Triconex module.
Several current listings use the Triconex name for , but the stronger traceable documentation identifies as a TSxPlus module from Beijing Consen Technologies. - Verify the hardware revision.
The TÜV revision list specifically records as a valid certified revision. A bare “” reference is not enough when replacing a safety-system module. - Match the terminal module.
TSxPlus documentation separately lists T-AI1601, T-AI1602, and T-AI3201 as analog-input terminal modules. Confirm the existing terminal assembly and field wiring before installing a replacement AI module. - Check firmware as part of the replacement decision.
The certified revision contains dedicated application, bootloader, FPGA, HART-function CPLD, and power-MCU firmware. A physically compatible board with a different revision may not constitute an equivalent safety-system replacement.
Related Products
- — documented certified hardware revision of the analog input module.
- DI3201-A-V002 — TSxPlus digital input module; different signal-acquisition function.
- DO3201-A-V002 — TSxPlus digital output module for discrete control outputs.
- AO1681-A-V002 — TSxPlus analog output module with HART function.
- OSP01-A-V002 — pulse input module with overspeed protection function.
- PM01-A-V002 — TSxPlus processor module.
- CM01-B-V002 — TSxPlus communication module.
- BI01-A-V002 — TSxPlus bus interface module.
- T-AI3201-A — analog input terminal module associated with the TSxPlus architecture.
- PW01-A-V001 — TSxPlus power supply module.
The TÜV revision list confirms these modules as components of the same TSxPlus V2.0 certified platform, making them more meaningful comparison points than unrelated generic analog I/O products.
Procurement Verification
Before purchasing , verify the following against the installed system:
- Complete designation, preferably
- TSxPlus software/hardware generation
- TÜV-certified hardware revision
- Existing terminal module: T-AI1601, T-AI1602, or T-AI3201
- Firmware revision and configuration
- HART-function requirement, if applicable
- Chassis and slot position
- Field signal type and wiring
- PCB revision and connector condition
- Whether the unit is new surplus, used, or refurbished
- Functional test documentation for used inventory
Engineering Identification Note
There is significant misinformation around in current online inventory pages. Some listings describe it as a 32-channel module, others as an 8-channel 4–20 mA module, while still others attach it to Triconex or unrelated PLC platforms. Those specifications should not be combined into one product description.
The strongest traceable evidence establishes as a TSxPlus Analog Input Module from Beijing Consen Technologies, with documented as a certified revision under TÜV Rheinland report/certificate 968/FSP 1454.02/22.
