IEC 61346-1 includes specific letter codes to classify products based on their intended purpose: Relays and contactors M: Motors and actuators
Understanding IEC 61346-1: The Foundation of Industrial Structuring and Reference Designations
It ensures that circuit diagrams, piping and instrumentation diagrams (P&IDs), and bills of materials (BOMs) use identical naming conventions. Key Benefits of Implementing the Standard
Ensuring every component within a plant has one definitive identifier. iec 61346-1 pdf
Because IEC 61346-1 is withdrawn, look for the following current publications: For the general structuring rules.
Focused on what the object does (e.g., "=K1" for a specific control function). -
"Industrial systems, installations and equipment and industrial products — Structuring principles and reference designations," IEC 61346-1 includes specific letter codes to classify
: What the object is (the specific hardware/software part).
+W1 could designate a specific electrical cabinet or control room. Multi-Aspect Structuring
While many legacy projects and older engineering tools still refer to the "IEC 61346-1 PDF," modern implementations should utilize the updated IEC 81346 rules. Core Structuring Principles: The Three Aspects Focused on what the object does (e
IEC 61346-1 applies to SIS that are used to achieve or maintain a safe state of a process. The standard defines key concepts, including:
The standard, titled "Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 1: Basic rules" , is a foundational document for organizing technical information through a systematic coding method. Key Status: Superseded by IEC 81346-1
It defines how to break down a large plant into smaller, manageable parts (subsystems, units, and components). The Three Aspects:
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