So, first of all, I've spent a year or so working with some IEC software.
We don't typically do 'true' IEC style drawings - but we use IEC symbols in replacement of standard NFPA symbols and continue to do everything with top-to-bottom ladders.
I have found after trying some true IEC drawings that I prefer it over NFPA drawings, but I do have a few questions on the designations:
We typically label our enclosures/panels as P-1, P-2, JB-1, JB-2, etc. Would these fall under a -A designation for multiple purpose in IEC?
What about VFDs? We typically use VFD for the letter code. I'm not sure what letter code would be appropriate.
How about PLCs and HMIs? I've seen -A on some drawings and -K on others. Then again, we just use PLC and HMI.
We don't typically do 'true' IEC style drawings - but we use IEC symbols in replacement of standard NFPA symbols and continue to do everything with top-to-bottom ladders.
I have found after trying some true IEC drawings that I prefer it over NFPA drawings, but I do have a few questions on the designations:
We typically label our enclosures/panels as P-1, P-2, JB-1, JB-2, etc. Would these fall under a -A designation for multiple purpose in IEC?
What about VFDs? We typically use VFD for the letter code. I'm not sure what letter code would be appropriate.
How about PLCs and HMIs? I've seen -A on some drawings and -K on others. Then again, we just use PLC and HMI.