Model Explanation

51400646-100: Honeywell part number (without delimiter, i.e. 51400646100)

51400646 = 5-slot cabinet fan assembly series

100 = Standard dual-fan, 24VDC power supply, no LED indicator version

Component Type: FAN ASSEMBLY (fan assembly)

Compatible Cabinet: 5-slot Chassis (5-slot DCS cabinet) Technical Specifications

Fan configuration: Dual fans (parallel cooling, single fan failure does not stop operation)

Power supply: 24 VDC (±10%), power supply from the back panel of the case

Current: 0.25 A (for a single fan)

Speed: 3000 RPM (constant speed, high airflow)

Air volume: 8.5 CFM (for a single fan, efficient heat dissipation)

Static pressure: 0.15 in-H2O (compatible with the case's air duct)

Operating temperature: 0°C ~ +60°C (consistent with the case environment)

Size: 367 × 363 × 20 mm (compatible with the 5-slot case installation slot)

Weight: 0.72 kg

Material: Metal frame + flame-retardant plastic fan blades (industrial-grade durability)

Certifications: CE, UL, CSA, RoHS

Interfaces and Installation

Power interface: 2-pin terminals (positive and negative poles of 24VDC, anti-reverse insertion design)

Installation method: Screw fixation (4-point positioning, compatible with the top/back installation slots of the case)

Status indication: No LED (monitoring fan status through system alarm)

Compatibility: Direct replacement of original fan components, no additional configuration required

Maintenance: Support hot swapping (no downtime for replacement,不影响 system operation) Core function

Efficient forced air cooling: Dual fans with high airflow design quickly disperse the heat inside the chassis, keeping the core module temperature within the safe range (≤50°C), preventing the failure of components due to high temperatures, performance degradation, or shortened lifespan.

Redundant cooling guarantee: Dual fans operate in parallel, with one fan continuing to work when the other fails, ensuring continuous operation of the DCS system and suitable for critical control scenarios.

Adaptation to harsh industrial environments: Metal frame + flame-retardant fan blade design, dust-proof, shock-proof, and resistant to aging, suitable for environments with multiple dust and vibration conditions, ensuring stable operation over the long term.

System status monitoring and linkage: When a fan fails (stops rotating, abnormal current), the DCS system automatically triggers an alarm, alerting maintenance personnel to replace it in time to avoid failure of cooling and system faults.

Standardized quick replacement: Strictly matching the installation size and interfaces of 5-slot chassis, it can be directly plugged and replaced on-site, facilitating maintenance and reducing downtime. Applicable scenarios

System: Honeywell TDC 3000, TPS, Experion PKS (C200/C300/HPM)

Rack: 5-slot DCS control rack (APM rack, HPM rack, I/O expansion rack)

Industry: Petrochemicals, thermal power, nuclear power, metallurgy, cement, glass, pharmaceuticals

Application: DCS rack cooling upgrade, aging fan replacement, enhanced cooling for high-load conditions, long-term continuous operation system cooling guarantee