After we get drawings and make sure all the parts are in stock, we lay out back panel...we layout as much of the components on it as possible to determine positioning...DC vs AC is decided first. One we have rough idea, we use pencil marks to start measurements for Din rail...one guy cuts the rail as another one starts to drill holes for screws..once Din rail in place we clean panel of cutting oil, drill debris and pencil marks...two guys start attaching components and terminal blocks as per drawings...the other guy is printing plastic labels for terminal blocks...once relays ,fuses, jumpers and PLC parts are installed, we install power supplies, UPS , battery and AC outlets. Then we start wiring AC power side...use deadman plug to test. Then we start wiring longest runs first while adding labels ... wiring takes the longest...after all wiring is complete, we test each run for continuity and Meg them... every run result is recorded...then we run DC power where needed...once everything wired and powered, we connect a laptop to PLC and our engineer runs stimulations throughout every circuit... NO/NC/Timers etc...if everything passes, we disconnect fuse for batteries. Clean everything and wrapped fully loaded back panel. At site, our crew installs into enclosures... we don't let electricians do it...too much risk .. Once in, we start landing wires from equipment along with labeling and testing. It's a 5 man shop but three on panel is most efficient.
On Sat, Apr 18, 2020, 1:22 PM Ken Hohhof <af...@kwisp.com> wrote: > It’s hard to realize the amount of labor in a project like that until you > try to do one yourself. How many man-hours or person-hours or person-days > or whatever do you think went into building that? > > > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Jaime Solorza > *Sent:* Saturday, April 18, 2020 1:58 PM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* [AFMUG] SCADA porn > > > > Last year but damn we kicked ass.. > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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