Standards
Standards
| Standards | |
|---|---|
| Standard | Definition |
| IEC 61131-2 | An international standard specifying requirements and testing methods for PLCs and associated peripherals. Covers aspects like electromagnetic compatibility (EMC), electrical and environmental requirements, and safety standards. |
| IEC 61000-4-3 | A part of the IEC 61000 standard series focusing on electromagnetic compatibility (EMC). Specifies testing procedures for assessing the immunity of electrical and electronic equipment to radiated radio-frequency electromagnetic fields. Helps ensure that PLCs and peripherals can operate correctly in environments where they may be exposed to radio-frequency interference (RFI). |
| IEC 61000-4-4 | A part of the IEC 61000 standard series focusing on electromagnetic compatibility (EMC). Specifies test methods for evaluating the immunity of electrical and electronic equipment to electrical fast transient (EFT) bursts. Bursts are typically caused by switching inductive loads or relay operations in industrial environments. |
| Class 1 Division 2 | A hazardous area classification defined by the National Electrical Code (NEC) and used in North America. Describes an environment where flammable gases or vapors may be present under abnormal conditions (such as a leak) but are typically not present during normal operations. Equipment used in Class 1 Division 2 areas must be designed to prevent ignition sources. |
| UL20276 | A safety standard by Underwriters Laboratories (UL) for cable assemblies and wiring harnesses used in data and telecommunications equipment. It ensures compliance with performance, safety, and environmental requirements, focusing on materials, construction, and fire safety. |