EMI shielding

BMS Communication Protocols: BACnet, Modbus, RS-485 Wiring, and Field Troubleshooting

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BMS communication is the nervous system of every modern building. A Building Management System (BMS) coordinates chillers, air handling units, variable frequency drives, lighting, and life-safety equipment by exchanging thousands of data points per second across a network. When that network performs well, the building is invisible to its occupants; when BMS communication degrades, the … Read more

Electrical Noise HVAC Control Failures: EMI Shielding, VFD Cable Distance, and Interlock Design

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Electrical noise HVAC control problems are among the most underdiagnosed failure modes in modern building and cleanroom systems. The control electronics that govern temperature, pressure, and humidity coexist with high-power equipment in environments where electromagnetic interference, induced currents, and switching transients are continuous threats to measurement accuracy and equipment reliability. The same building that houses … Read more