Product Core Brief
- Model: K9202B
- Brand: HIMA
- Series: HIMax
- Core Function: Provides active cooling for safety controller racks with integrated speed control.
- Product Type: Cabinet Fan Module
- Key Specs: 24 VDC | 200 m³/h | 2800 RPM
- Condition: New Original (New Surplus) ⚠️ EOL — limited stock remaining
Product Introduction
The HIMA is a dedicated cooling fan module for HIMax safety controller racks. It mounts on the cabinet top to maintain safe operating temperatures for critical logic solvers and I/O cards.
This unit features an integrated thermostat that automatically adjusts fan speed based on internal cabinet temperature. With a rated airflow of 200 m³/h and a 62,500-hour MTBF at 40 °C, this module ensures reliable thermal management without manual intervention.
HIMA K9203A 996920360
Key Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage | 24 VDC |
| Max Rated Current | 500 mA |
| Airflow | 200 m³/h |
| Rotational Speed | 2800 min⁻¹ |
| Sound Pressure Level | ~50 dB(A) |
| MTBF (at 40 °C) | 62,500 h |
| Ambient Temp Range | -20 °C to +70 °C |
| Material | Anodized Aluminum |
| Installation | Cabinet Top / Roof Mount |
| Control Logic | Integrated Thermostat |
Quality Control Process (Engineer’s Perspective)
We don’t just box these and ship them. Here is our actual bench test workflow.
- Incoming Verification: We verify the serial number against HIMA’s traceability records. A visual inspection checks for bent fan blades and ensures the aluminum housing isn’t cracked or corroded.
- Live Functional Test: We power the module at 24 VDC and verify the fan starts smoothly. We use a thermal gun to simulate cabinet heat and confirm the thermostat engages the speed control logic correctly.
- Electrical Parameter Test: We measure the current draw with a Fluke 115 to ensure it stays under the 500 mA limit. We also check ground continuity to the aluminum chassis.
- Firmware Verification: N/A for passive fan modules. We photograph the label and connector pinout to ensure no manufacturing date anomalies exist.
- Final QC & Packaging: The module is sealed in an anti-static bag with silica gel. A QC sticker showing the test date and technician initials is applied to the exterior.
Replacement Pitfall Guide
Field replacements on safety systems are unforgiving. Watch out for these traps.
- Firmware Mismatch: ❗ Critical. While this is a passive module, some newer HIMax CPUs monitor fan RPM feedback. If your CPU expects a specific RPM curve, verify the matches your system’s configuration matrix.
- DIP Switch / Jumper Misconfiguration: This module has no user-adjustable switches. However, ensure you aren’t confusing it with the K9203A rack fan; they have different mounting footprints and airflow directions.
- Terminal / Cable Incompatibility: Inspect the 24 VDC power connector before plugging in the new card. Corroded pins or loose crimps are common failure points that mimic fan motor failure.
- Power Supply Mismatch: Verify your 24 VDC field power supply has at least 20% headroom. A failing fan bearing can draw excessive current, potentially tripping the rack’s power supply protection.
- ESD Damage: Safety modules are highly sensitive to electrostatic discharge. Always wear a grounded wrist strap when handling the bare PCB. I’ve seen modules fail bench testing because they were handled on a dry winter day without protection.
Keep these in mind and you’ll cut 90% of rework time.
HIMA K9203A 996920360
Compatibility Matrix & Benchmarks
Compatibility
- HIMA K9202 → : Direct Replacement — Verify mounting hole alignment.
- HIMA K9203A → : Incompatible — Different form factor and airflow direction.
Benchmarks
- Airflow Volume: 200 m³/h (free air, no backpressure)
- Start-up Time: < 2 s (at 24 VDC nominal)
Need the mounting template for the ? I can pull up the PDF with the exact hole spacing and clearance requirements.
