I guess it would depend upon how you use the Installation and Location codes. They could be physical or logical. Installation could be the physical location of the system (i.e. city, building, or maybe even the production line number). The location might be MP for Main Panel, JB1 for Junction Box 1, JB2 for Junction Box 2, REM for Remote, FLD for Field, etc.
If you have 4 identical production lines that you are documenting under one project, you could make the Installation code be the production line number, like LN1, LN2, LN3, and LN4, for example. Thus control relay CR505 inside the Main Panel of Production Line 2 would have a complete component identification of =LN2+MP-CR505. If you happen to be a design engineer for a manufacturing plant, this method would allow you to document all production lines in one project.
I personally prefer a separate project for each production line but AutoCAD Electrical will support placing all drawings in one project by setting drawing level default Installation and Location codes. You must be sure to check the box for Combined Installation/Location Tag Mode, under the Components tab of Project Properties, or you will receive tag duplication error popups.
If I am an OEM designing a production system that might be sold all over the world, I'm not necessarily going to know the Installation name, so I might opt to assign Location codes but leave Installation blank.
If I am an Integrator, designing a specific control system for a specific customer for their factory in Detroit, I might assign the Installation code as DET for Detroit.
I have had customers who wanted me to use the Installation and/or Location codes as logical assignments. For example, let's say I have a machine that my company makes and it has options for up to 4 motor control circuits. I will use the Location code field to indicate which option circuit these components are used for. I place one motor control circuit per drawing, assigning the drawing default Location as MTR1, MTR2, MTR3, and MTR4. If I receive an order for the 2 motor version, I generate the BOM with the filter by Location option set to include all Location codes except MTR3 and MTR4. So my BOM will only include the parts needed to build the machine with 2 motors.
Hint: If I am using a large drawing environment (i.e. ANSI-D or IEC A2 or A3) I might be able to fit more than one motor circuit on a drawing. In this case I could place a Location Box around all of the components used for motor 1 and enter MTR1 as the Location Code for that Location Box. I repeat this for MTR2, etc.
Doug McAlexander
Design Engineer/Consultant/Instructor/Mentor
Specializing in AutoCAD Electrical Implementation Support
Phone: (770) 841-8009
www.linkedin.com/in/doug-mcalexander-1a77623
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