Functional Features  

Mechanical Carrier: Module fixation, guide rail mounting, vibration resistance  

Electrical Backplane: 24VDC power supply, signal isolation, dual-channel redundant communication  

Safety Isolation: 2500V RMS channel isolation, compliant with SIL3 / TÜV certification  

Hot Swap: Online module replacement without system interruption  

Key Specifications (98021 / 98522)  

Manufacturer: ICS Triplex (Rockwell Automation)  

Power Supply: 24VDC (power drawn from backplane)  

Slot Current: 98021 ≈ 3A; 98522 – 5A per slot (total 10A)  

Communication: Backplane bus, Ethernet, Modbus  

Isolation: 2500V RMS (between channels)  

Temperature Range: -40°C to +70°C  

Protection: IP20  

Dimensions: Standard 19-inch rack-mount, 4U height  

Weight: Approx. 2.5 kg  

Compatible Modules  

9802*1 → T9802: 16-point 24VDC digital input, dual-channel redundancy  

9852*2 → T9852: Supports digital and analog I/O modules, compatible with redundant configuration  

Typical Applications  

SIS safety systems in petrochemicals, natural gas, power generation, pharmaceuticals, etc.  

Critical interlocks, emergency shutdown (ESD), burner management (BMS)  

High availability, fault-tolerant, SIL3-level safety control  

Model Differentiation  

9802*1: Base board (Board Base) + T9802 module  

9852*2: Dual-slot base, no module included  

T9802: Module itself, base not included