I. Basic Information

Model: K9202 (Order Number: 996920202)

Brand: HIMA (Germany)

Type: Safety Controller / CPU Module (TMR Redundancy)

Compatible Systems: HIMax, H41q/H51q (HIQuad X) Series SIS/ESD Systems

Safety Level: SIL3 (IEC 61508), AK6, PL e/Cat.4, Some Scenarios Reach SIL4

Certifications: CE, UL, TÜV, ATEX

Installation: 19-inch standard rack, 4U height

Environment: IP20; Operating Temperature **-20°C ~ +60°C**, Storage - 40°C ~ +70°C

Weight: Approximately 1.2kg

Dimensions: 190mm × 130mm × 40mm (Width × Height × Depth)

II. Core Parameters

Processor: Triple ARM Cortex-A53/A9 dual-core, three-channel clock synchronization, main frequency 1.2GHz

Memory: 1MB Flash-EPROM (program) + 1MB SRAM (data), expandable to 1GB RAM/512MB Flash

Power Supply: 24VDC (18~32VDC), power consumption ≤ 20W

Redundant Architecture: TMR triple module redundancy, single/double-channel faults still allow safe operation, no single-point failure

I/O Capacity: Configurable up to 128 points I/O (digital/analog)

Communication Interfaces:

Ethernet TCP/IP (Modbus TCP)

RS-485, RS-232

Supports Profibus, EtherNet/IP, etc. protocols

Processing Cycle: 1ms / Instruction Cycle, high-speed safety logic operation

Self-Diagnosis: Three-channel cross-checking, fault self-diagnosis, fault-safe failure

III. Interface and Terminal Definitions Table

Interface / Terminal Type Function

PWR 电源 24VDC ± 10% power supply， redundant input

ETH Ethernet Modbus TCP communication， connects to upper computer / DCS

RS-232/485 Serial Port Debugging， configuration or communication with third-party devices

I/O Bus System Bus Connects local / remote I/O modules (redundant)

LED Indicator Light State Power (green)， running (green flashing)， fault (red)， communication (yellow flashing)

V. Safety Features

TMR Triple Redundancy： Three independent CPU channels， clock synchronization + cross-checking， single-channel failure does not cause shutdown， complies with SIL3 without single point failure.

Fault Safety Design： When module fails / program error occurs， output automatically switches to safe state (such as ESD trip).

Real-time Self-Diagnosis: Continuously detects hardware / software faults, alarms immediately when a fault occurs and isolates the faulty channel.

Highly Reliable Communication: Redundant bus + multi-protocol support, strong anti-interference, suitable for long-distance / harsh industrial environments.

VI. Installation and Wiring

Installation: Fixed in 4U position of 19-inch rack, with an upper and lower spacing of ≥ 50mm for heat dissipation; away from strong electricity / frequency converters and other interference sources.

Power Wiring：

24VDC redundant input， L + connected to positive， L - connected to negative， wire diameter ≥ 2.5mm².

Single-ended grounding of the shielding layer， terminal tightening torque ≥ 0.8N・m.

Communication Wiring：

Ethernet： Connect the standard network cable to the ETH port， IP address configured through SILworX software.

Serial Port： RS-232/485 connected to debugging / configuration devices， baud rate 9600~115200bps.

I/O Wiring： Connect to HIMA I/O modules through the system redundant bus， enable terminal resistors (180Ω) at both ends of the bus.

VII. Debugging and Maintenance

Power-on Test： Power LED always on； running LED flashes； no fault alarm.

Configuration Setup： Configure I/O addresses， communication parameters， safety logic program through SILworX software.

Daily Maintenance： Check wiring tightness， LED status， and heat dissipation every 6 months； dust removal， program configuration backup.

Fault Troubleshooting：

Red Fault Light On： Single-channel failure → Restart the module or replace the redundant controller；

Communication Interruption： Poor contact of network cable / serial port → Reinsert or replace the cable；

Logical Error： Program configuration error → Check SILworX configuration and re-download.

VII. Typical Applications

Petroleum / Chemical： Safety logic control for SIS/ESD systems， emergency stop interlock， burner management (BMS)；

Oil and Gas / Power： Safety monitoring for gas stations， power plant boiler / turbine protection， fire gas detection (F&G)；

Applicable Scenarios： Systems of HIMax/H41q/H51q need SIL3 level， highly reliable redundant safety control for critical safety applications.