Description
Product Overview
K9202 is HIMA HIMax cabinet roof-mounted fan assembly, designed to install on the top interior of the SIS control cabinet, delivering overall cabinet air circulation for HIMax safety instrumented racks. It is equipped with dual fans and built-in fan speed monitoring circuit, provides airflow for cabinet ambient heat dissipation, different from the K9203 rack drawer fan which cools individual rack cards. HIMA continues spare support for existing HIMax safety installations.
Technical Specifications
| Item | Parameter |
|---|---|
| Manufacturer | HIMA Paul Hildebrandt (Germany) |
| Part Number | K9202, Order Code:996920202 |
| Product Type | Cabinet Roof Fan Assembly |
| System Platform | HIMA HIMax SIS Safety Instrumented System |
| Power Supply | 24 VDC (18–30 VDC operating range) |
| Fan Quantity | 2 fans |
| Nominal Airflow | 240 m³/h |
| Fan Monitoring | Pulse speed detection, dry contact relay alarm output |
| Housing | Anodized aluminum enclosure |
| Mounting | Internal top mounting inside 19-inch control cabinet |
| Operating Temperature | -25 °C ~ +60 °C |
| Humidity | 5%–95% RH, non-condensing |
| Enclosure Rating | IP20 (installed inside control cabinet) |
| Net Weight | Approx.1.05 kg |
Key Features
- Cabinet Top Mounted Design: Installs on cabinet roof, circulates air inside the whole cabinet to remove ambient heat buildup.
- Dual Fan Configuration: Two fans for redundant cooling; single fan failure still maintains partial airflow.
- Fan Fault Diagnostic Monitoring: Detects fan stall or speed loss and triggers relay dry contact alarm to HIMax safety logic solver.
- SIL Safety System Compatible: Alarm signal integrated into HIMax diagnostic system for safety cabinet health monitoring.
- Low Vibration Industrial Fans: Rugged construction suitable for power plant, refinery and offshore control room environments.
- Front LED Status Indicator: Visual indicator for normal operation and fan fault status for local inspection.
- Distinction from K9203: K9202 = cabinet roof fan for overall cabinet air circulation; K9203 = rack drawer fan inserted directly into HIMax rack for card-level forced cooling.
Applications
- Power plant SIS / BMS HIMax safety cabinets
- Petrochemical ESD emergency shutdown control panels
- Oil & gas pipeline safety instrumented system cabinets
- Chemical plant fire & gas safety control enclosures
- Refinery critical safety control room racks
Installation & Maintenance Notes
- Use ESD protection when handling the fan assembly.
- Lockout-tagout the 24VDC fan supply before removal or replacement.
- Check alarm wiring and dry-contact signal connection after installation, verify fault alarm function.
- Periodically clean fan filters and fan blades; dust accumulation reduces airflow and triggers high cabinet temperature.
- Confirm full part number K9202 (996920202) match during spare procurement, do not mix up with rack drawer fan K9203.
- After replacement, test fan fault alarm function via HIMax engineering software.
FAQ
Q: What is the difference between K9202 and K9203? A: K9202 is cabinet roof fan for full cabinet air circulation. K9203 is rack plug-in drawer fan mounted inside HIMax rack to cool CPU and I/O modules directly.
Q: Is K9202 hot swappable? A: The HIMax safety rack can keep online, but you need to isolate its 24VDC power supply before physically removing the roof fan unit.
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