K9203 HIMA HIQuad Datasheet & Technical Manual

HIMax HIQuad 24VDC 1RU Rack Circulation Fan Unit | HIMA K9203

HIMax HIQuad 24VDC 1RU Rack Circulation Fan Unit | HIMA K9203

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HIMA K9203 Rack Fan Unit The HIMA K9203, also cataloged as the K9203A Rack Fan Unit (Part No: 996920302), operates...

SKU: K9203

Manufacturer: HIMA
Product No.: K9203
Product Type: ControlNet Interface Modules
Product Origin: Germany
Payment:T/T, Western Union
Weight: 1800g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

HIMA K9203 Rack Fan Unit

The HIMA K9203, also cataloged as the K9203A Rack Fan Unit (Part No: 996920302), operates as a dedicated hardware component for forced ventilation and thermal dissipation within HIMax, HIMatrix, and HIQuad 19-inch subrack assemblies.

Hardware Specifications

Parameter	Specification
Model	K9203 (K9203A / Part No: 996920302)
Brand	HIMA
Origin	Germany
Weight	1.8 kg
Dimensions	19-inch rack, 1 RU height, depth 215 mm (51 x 254 x 114 mm module bounds)
Operating Temp	-20 to +70 deg C
Power Consumption	24 VDC (-15% to +20%, max 750 mA)
Fan Configuration	3 axial fans (brushless DC motors)
Airflow Capacity	Up to 300 m3/h
Rated Speed	2800 RPM
Sound Pressure Level	~55 dB(A)
Expected Life	62,500 hours at 40 deg C ambient
Diagnostics	Fan speed threshold monitoring (75% to 85%), supply voltage monitoring, volt-free fault relay contact (1 A max)
Housing Material	Anodized aluminum
Ingress Protection	IP20

SIL3 Safety Rack Cooling & Fail-Safe Diagnostic Integration

The HIMA K9203 unit integrates channel-level speed monitoring circuits to continuously evaluate the rotational velocity of all three axial fans. Designed to support SIL3 subrack installations, the internal diagnostic logic compares fan tachometer feedback against factory-set thresholds (75% to 85% nominal speed) and monitors incoming 24 VDC power rail stability.

When a fan speed degradation, mechanical stall, or power supply deviation occurs, the onboard monitoring logic alters the state of a dry fault relay contact. This action transmits an immediate diagnostic alarm across the safety system backplane to trigger maintenance warnings, allowing operators to execute corrective action before subrack ambient temperatures compromise adjacent I/O and processor modules.

Frequently Asked Questions

Q: How does the internal monitoring logic signal a fan failure condition?

A: An integrated monitoring circuit continuously evaluates motor speed and input voltage. If a fan drops below 75% to 85% of nominal speed or loses power, an onboard volt-free relay contact opens to trigger a system diagnostic alarm.

Q: What power input range does the fan unit accept for steady operation?

A: The module operates on a nominal 24 VDC power supply with an allowable input voltage tolerance of -15% to +20%, drawing a maximum current of 750 mA under full load.

Q: Can the K9203 fan unit be integrated into standard 19-inch subrack frames?

A: Yes. The chassis follows a standard 19-inch 1 RU form factor with a 215 mm depth, making it directly compatible with 19-inch HIMax, HIMatrix, and HIQuad cabinet subracks.

Field Installation Guidelines

Mount the K9203 fan unit horizontally directly below or above the target I/O subrack using standard 19-inch rack fasteners, verifying frame ground contact through chassis mounting ears. Ensure the air intake and exhaust paths remain unobstructed by wiring ducts or structural bulkheads to maintain the maximum 300 m3/h airflow rate across the -20 to +70 deg C operating temperature spectrum.

Route the 24 VDC power conductors and diagnostic relay signaling cables in separated wire troughs away from high-voltage AC lines and variable frequency drive output cables. Terminate wiring shields to the cabinet central earthing bar and check terminal screw torque settings prior to energizing the 24 VDC feed.

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