Note; All products on this site are special products, the market price has been fluctuating, the specific customer service offer shall prevail, because the product is a new product, the picture is not a real shot, please confirm with customer service before placing an order model and product, price and other details, the site used, new are for sale, please contact customer service communication. The K9203A (material number: 996920360) is a 19-inch rack-mounted forced-air cooling fan module launched by HIMA Germany. Designed specifically to deliver forced ventilation and cooling for 19-inch subracks in industrial control cabinets and Safety Instrumented Systems (SIS), it incorporates three sets of axial fans working in tandem. Integrated with redundant power supply, operational status monitoring and voltage monitoring functions, this module meets the high-reliability cooling requirements of harsh industrial environments. It is compatible with subracks of control system series such as the HIMA H41q, serving as a core cooling component that ensures the long-term stable operation of critical automation equipment.
related documents
HIMA K9203.pdf
Core Components and Functional Features
1. Core Component Configuration
The core configuration of this rack fan includes 3 axial fans. The fan positions are precisely engineered to perfectly align with HIMA 19-inch subracks, ensuring uniform airflow coverage and enhancing overall heat dissipation efficiency. Meanwhile, the product supports redundant power supply, with a backup power source connectable via Terminal 3. Even if the main power supply fails, the backup power can switch over rapidly to prevent heat dissipation interruption, significantly improving the continuity of equipment operation. In addition, the product is built with a dual monitoring mechanism: on the one hand, it monitors fan operating status in real time and triggers a fault alarm when the fan speed drops to 75%–85% of the rated speed; on the other hand, it conducts voltage monitoring to track fluctuations in working voltage in real time, ensuring the safe operation of the equipment.
2. Core Functional Advantages
In terms of heat dissipation performance, the fan adopts an airflow path design of bottom air intake and top air exhaust, achieving an air flow rate of 300 m³/h. It can quickly dissipate heat generated by electronic components inside the rack, effectively preventing performance degradation or malfunctions caused by overheating. During operation, its sound pressure level is approximately 55 dB (A), minimizing noise interference while meeting heat dissipation requirements, making it suitable for industrial field environments. The product is made of anodized aluminum, which combines lightweight design with durability. It has an expected service life of up to 62,500 hours at an ambient temperature of 40°C, reducing the costs associated with frequent replacement and maintenance, and meeting the long-term continuous operation requirements of industrial equipment.
Detailed Technical Specifications
This product, model K9203A with order number 996920360, is manufactured by HIMA Germany and is a professional device specially designed for industrial rack heat dissipation. The main body is made of anodized aluminum, which undergoes anodizing treatment to ensure excellent corrosion resistance and structural strength. For installation, the product is compatible with 19-inch racks and features a 1 RU height design (approx. 44.45 mm) with a depth of 215 mm. Its compact structure effectively saves rack space without affecting the installation layout of other equipment.
In terms of electrical parameters, the product operates at a voltage of 24 VDC, with an allowable voltage fluctuation range of -15% to +20% (i.e., 20.4 VDC to 28.8 VDC), and has a maximum rated current of 750 mA. It is compatible with DC power supply environments commonly found in industrial sites and has strong tolerance to voltage fluctuations, preventing abnormal equipment operation caused by grid fluctuations. For environmental adaptability, the product can operate stably within a wide temperature range of -20°C to +70°C, capable of withstanding the extreme alternating high and low temperature environments in industrial sites. With a weight of 1.8 kg, its lightweight design facilitates installation and subsequent maintenance.
Operating Status and Fault Monitoring
1. Status Indication System
The product provides real-time feedback on equipment operating status through four key points: pins (4-5, 5-6) of the connector plug, as well as the LED Fail (fault indicator) and LED 24 V (power indicator).
- Under normal fault-free operation: Connector pins 4-5 are open, pins 5-6 are closed, the LED Fail light is off, and the LED 24 V light remains steadily on.
- When the working voltage is below 20.4 V or above 28.8 V: Pins 4-5 remain open, pins 5-6 remain closed, the LED Fail light is off, and the LED 24 V light flashes.
- In case of working voltage loss or fuse failure: Pins 4-5 are closed, pins 5-6 are open, and both the LED Fail light and LED 24 V light are off.
- When a fan fault occurs (speed drops to 75%–85% of the rated speed): Pins 4-5 are closed, pins 5-6 are open, the LED Fail light remains steadily on, and the LED 24 V light remains steadily on.
2. Fault Alarm Expansion
The fault relay contacts of the product support connection to optical or acoustic detectors with a maximum current of 1 A, such as alarm lights and buzzers. When the system detects issues such as voltage anomalies or fan faults, the external detectors can send out audible and visual alarm signals in a timely manner, reminding operators to quickly detect and address faults, and preventing fault escalation from affecting the normal operation of the entire system.
Installation and Wiring Specifications
1. Installation Requirements
The installation location must be restricted to the 19-inch zone of a 19-inch rack, ensuring precise alignment between the fan and the subrack. This prevents obstruction of the airflow path and guarantees optimal heat dissipation performance. During installation, the direction requirement of bottom air intake and top air exhaust must be strictly followed; reverse installation will render the heat dissipation function ineffective and compromise equipment operation. Appropriate tools shall be used to secure the device, ensuring the module is firmly mounted to prevent displacement or increased noise caused by vibration during operation.
2. Wiring Configuration
For power supply wiring, Terminal 1 (L1+) and Terminal 2 (L-) are used to connect the main 24 VDC power supply, while Terminal 3 (L2+) can be connected to a redundant power supply to form a dual-channel power supply mode, enhancing power supply reliability. It is recommended to install a fuse in the power circuit to prevent fan damage caused by overcurrent.Regarding cable selection, the product supports three types of cables: solid-core wires, stranded wires, and stranded wires with wire-end ferrules. The cross-sectional area of solid-core wires shall be between 0.08–2.5 mm²; that of stranded wires shall be 0.25–1.5 mm²; and that of stranded wires with wire-end ferrules shall be 0.25–2.5 mm². All cables must be connected to spring-loaded cage terminals.A 3.5×0.5 mm straight screwdriver shall be used for wiring operations to ensure secure cable connections, avoiding voltage fluctuations or abnormal fan operation due to poor contact.
Application Fields and Scenarios
With its high reliability, efficient heat dissipation performance and wide environmental adaptability, the HIMA K9203A 996920360 Rack Fan is widely used in various industrial scenarios with stringent requirements for equipment heat dissipation and operational stability.
- In Safety Instrumented Systems (SIS), it provides stable heat dissipation for critical safety equipment such as fire alarm systems, emergency shutdown systems and interlock systems, ensuring equipment does not fail under extreme operating conditions.
- In industrial automation control cabinets, it meets the rack cooling requirements of devices such as PLCs (Programmable Logic Controllers) and DCSs (Distributed Control Systems), maintaining an optimal operating temperature for core components and reducing production line downtime caused by equipment overheating.
- Meanwhile, in industries such as petrochemicals, power plants, pharmaceutical factories and food processing plants, it can effectively withstand harsh environments such as high temperatures and heavy dust, providing reliable heat dissipation support for process control equipment and monitoring systems, and ensuring the continuity and safety of production processes.
Maintenance and Service Guarantee
1. Daily Maintenance Key Points
For daily maintenance, it is recommended to conduct a cleaning inspection on the fan every 6 months to check whether dust has accumulated on the fan blades. If dust is present, clean it with a dry soft cloth or compressed air to prevent dust from obstructing airflow and reducing heat dissipation efficiency.
Regularly observe the status of the LED indicators, and confirm the normalcy of fan speed and power supply voltage in conjunction with external audible and visual alarm devices. Meanwhile, check for loose power terminals and signs of cable aging or damage; tighten or replace them promptly if necessary to ensure reliable equipment connections.
The product features a modular design. In the event of a fan fault, the faulty module can be replaced quickly after shutdown without disassembling the entire cabinet, effectively minimizing maintenance downtime. When replacing the module, ensure that the model and order number of the new module match the original one to avoid compatibility issues.
2. Service and Warranty
The product is delivered in brand-new, individually sealed packaging and undergoes rigorous quality inspection before shipment to ensure compliance with quality standards. For logistics, multiple shipping methods are supported, including DHL and FedEx. For in-stock items, delivery can be arranged within 5–7 working days after payment; for made-to-order items, delivery takes 3–4 weeks, which can meet the needs of urgent procurement.
The warranty period is 12 months from the date of package receipt. Within the warranty period, if the product has non-human-induced quality defects, you may contact the supplier for replacement or negotiate a solution. It should be noted that damage caused by human factors (such as equipment breakage and scratches) is not covered by the warranty.
Regarding payment terms, telegraphic transfer (T/T) is supported, with a requirement of 50% deposit and the remaining 50% balance to be paid later. The quoted price is generally the ex-factory price excluding taxes. For after-sales support, you can contact us via telephone, WeChat, WhatsApp and other channels to obtain professional technical support and troubleshooting guidance.
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