Control Panel Design for Beginners Pt.1: Specifications & BOM
Welcome to Part 1 of the Control Panel Design series, where we take an industrial electrical control panel from concept to a complete bill of materials. This series is built for beginners who want to understand how professional control panels actually come together, one deliverable at a time.
Thank you to COFASO for sponsoring the video - COFASO makes an outstanding CAD/CAE software package! Students, technical schools and universities can qualify for free licenses, and all LeMaster Tech Subscribers can receive a free 6-month trial by emailing [email protected] or message them at https://www.cofaso.com/en/contact with code 'LeMasterTech6'
Link to all project resources discussed in this video:
https://github.com/plemaster01/ControlPanelDesign
In this video, we start at the very beginning: defining project requirements. From there, we walk through how to read a P&ID (Piping and Instrumentation Diagram) or a mechanical motion schematic and use it to build out a controls narrative and a structured IO list. The IO list is the backbone of the entire design, and getting it right early saves you from expensive mistakes down the line.
Once the IO list is defined, we use it to generate a full bill of materials. We cover selecting the PLC and IO modules, along with the supporting components that make a panel complete: switches, HMIs, relays, terminal blocks, and circuit breakers.
We also dig into panel specifications, including NEMA and IP ratings, so you know how to spec an enclosure for the environment it will actually live in.
By the end of this video, you will understand the full workflow: defining project requirements, reading a P&ID, creating an IO list, and generating a complete bill of materials for an industrial control panel.
Topics covered in this video:
- Defining project requirements for a control panel
- Reading a P&ID and mechanical motion schematics
- Building a controls narrative
- Creating a structured IO list
- Generating a bill of materials (PLC, IO modules, switches, HMIs, relays, terminal blocks, circuit breakers)
- Panel specification: NEMA and IP ratings
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TIMESTAMPS:
00:00 - Introduction and Background
02:10 - Defining Project Requirements
03:50 - Reading and Understanding a P&ID
05:50 - Creating and Understanding an IO List
07:42 - COFASO
09:03 - Selecting a main brand of PLC hardware for your cabinet design
11:20 - Choose a PLC for the control cabinet
12:35 - Choosing IO Cards for the cabinet
13:13 - Choosing an HMI for the cabinet
14:39 - Choosing a switch for the cabinet
16:35 - Choosing a power supply for the cabinet
18:30 - Terminal Block selection for control cabinets
20:10 - Choosing Relays for your control cabinets
21:38 - Circuit Breakers and Fuses for Power Protection
22:53 - DIN Rail and Wireway Specification
24:34 - How to select the right control cabinet for your project
28:51 - Outro and Recap