Description

Basic Information

• Full Model: X-AI 32 01 (X-AI3201)
• Manufacturer: HIMA Paul Hildebrandt GmbH (Germany)
• Matching Platform: HIMax modular SIS safety instrumented system (works with X-CPU 01 CPU module)
• Safety Certification: SIL 3 (IEC 61508 / IEC 61511), ISO 13849-1 PL e, EN 954-1 Category 4
• Warranty: 1 Year

1. Core Technical Parameters

Channel & Signal Acquisition

1. 32 independent analog input channels, grouped into multiple isolated banks for fault segmentation
2. Default signal: 4–20mA two-wire/three-wire intelligent transmitter signal, built-in loop power supply for field sensors
3. Native integrated HART protocol demodulation: can read secondary variables, device diagnostics, tag information from HART smart transmitters
4. Per-channel full diagnostics: sensor open circuit, short circuit, wire breakage, over-range/under-range fault detection, drift monitoring

Safety Architecture

• Dual-channel internal safety voting circuit (1oo2D fault-tolerant structure)
• Continuous background self-test for ADC sampling circuit, power loop and backplane bus
• Single channel failure is isolated internally, will not affect the other 31 measuring points
• Supports system online hot-swap replacement without shutting down the entire SIS safety rack
• 

Electrical & Environmental

• Power supply: 24 VDC (18.0 ~ 28.8 VDC wide range)
• Protection Class: IP20, only installed inside indoor control cabinet
• Operating temperature: -20 ℃ ~ +70 ℃
• Storage temperature: -40 ℃ ~ +85 ℃
• Humidity: 5% ~ 95% non-condensing
• Mechanical: Standard HIMax 6U rack plug-in module, weight approx. 1.0 kg
• Mounting: Plug into X-BP series base backplane, locked with front screw for anti-vibration

Diagnosis Indicators

Front panel LED status lights: Module power running, overall module fault, bus communication error, group channel fault alarm

2. Product Overview

The X-AI 32 01 is the high-density front-end analog signal acquisition card for HIMA HIMax SIS safety system, responsible for collecting all critical process variable analog signals and transmitting validated safe digital values to X-CPU 01 safety processor for ESD interlock logic judgment.

It is the core perception layer of the safety system: it receives 4–20mA pressure, temperature, flow, liquid level, vibration and gas concentration signals from field safety transmitters in petrochemical, power and oil & gas plants. Each channel independently powers the 2-wire transmitter and constantly checks loop integrity. Once a broken wire, short circuit or abnormal process value is detected, the module marks the fault point and uploads to the safety CPU immediately.