Learn Basic PLC Programing

PLC Ladder Control Software Down Load Free

Learn Basic PLC Control Online Free www.nfiautomation.org

The PLC control would burn out if you tried to hook a large amp load directly to the unit. To work around this issue solenoids, contactors and coil devices are placed to control and solve the issues. To transfer large amp loads and switching thru coils with smaller circuits either dc or ac.

By taking the line voltage of the circuit to the normal open or normally close inputs on the relay this allows the load to be controlled with either battery voltage source or  transformer voltage source.

500 Amp magnetic latching switch provides high amperage switching under load, manually or from remote locations

• Manual override knob provides an added level of safety allowing control with or without power and offering LOCKED OFF capability for servicing
• LED output to remotely indicate switch state - requires optional LED
• 3∕ 8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance
• 7∕ 8" (22 mm) stud length accepts multiple cable terminals
• Label recesses for circuit identification
• Silver alloy contacts provide high reliability for switching live loads

Auto Releasing ML-Series Remote Battery Switch with SPST Switching Provides 500A switching and features of current ML Remote Battery Switches, but can be controlled with SPST or SPDT switch for applications where a normally open relay is desired

Now we can take the 500 amp battery load and turn it off and on with the PLC input control with the 2 above choices and not worry about melting the PLC because it is operating line voltage and not the load voltage. In this example when battery reaches 80% of float voltage it goes offline and does not return online until float voltage is returned to normal.

For a single battery boat or vehicle, the m-LVD will save power for engine starting or other desired loads. The m-Series ON-OFF Battery Switch provides a disconnect to cut off battery power when the boat is not in use or in the event of a fire.

By protecting the battery from the charge controller voltage this is added protection for each individual battery before it is joined with others in a group for the operating voltage 12/24/36/48, ect.

Example of ladder control as long as switch1 is open SWITCH2 + SWITCH3 + SWITCH4 will operate. Close SWITCH1 and they will not operate. Think of this ladder control as SWITCH1 being the Master Switch

Stop start switch replace M with sized amp load of choice

Simple line and load diagram

AC Grid 120/240 100/amp Main

Grounded 5/8 X 8' w #4

Your home or business electrical panel can be a line source of power for PLC as well as sensors to monitor all off grid or on grid voltages and circuit breaker amp draws, along with endless switching. security. and other applications. 

UPDATE'S

12/8/115

After many hours of free online learning PLC programing I learn that. www.nfiautomation.org to make wpl soft 2.41 plc capadable with your pc you have to have paid Advanced Industrial Automation Course to unlock software. Searching for free version to write PLC code and have it operate on any pc is this possible? Simulation mode of data entry to operate with I/O (input/output) line/load of various/types of voltages and system automation for prototype testing of crunching the numbers to make it all work in theory. 

Need free version of software and people/talents to help others make free offgrid power possible.