PLC for extreme environments

The AC-500 XC PLC from ABB is designed to operate in extreme temperatures and has extended immunity against corrosive elements and electric shock.


The AC-500 XC PLC from ABB is designed to operate in extreme temperatures and has extended immunity against corrosive elements and electric shock. Courtesy: ABBABB's AC500-XC PLC is protected against a wide variety of threats including high and low temperatures, high humidity, low air pressure, salt mist and hazardous gases, and vibration and shock. This helps eliminate the need for sophisticated protective enclosures with special seals, HVAC, shock absorbers, EMC protection and other safety features.

The embedded protection features ensure that AC500-XC PLC based control systems stay functional and reliable even when operating in hostile environments. Such conditions can be found in many common automation applications including mines, tunnels, vessels, cranes, water and wastewater plants, offshore platforms, wind turbines, solar trackers and weather and navigation stations.

Embedded environmental protection opens up extensive applications potential for the ABB AC500-XC. Extended temperature operation allows the PLCs to operate in temperatures from -30 to +70 °C. Circuit boards are conformally coated to protect against high humidity levels. The PLC has extended immunity against salt mist and atmospheres with corrosive gases such as H2S, SO2, CL2 and NO2.

High levels of vibration and shock can be tolerated, with accelerations up to 4 g from random vibrations up to 500 Hz, or 2 g  from sinusoidal vibration. The PLC is capable of operating at altitudes up to 4,000 m. It also offers extended EMC protection against voltage surges and fast transients, as well as electrostatic discharge.


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