The scenario
A water system uses a PLC to sequence two pumps based on level sensors. The diagram shows the control wiring with push buttons, relays, and an alarm.
What is in this drawing
Read the decisions behind it.
01
Use netlist mode for clear component connections
02
Assign distinct net names for PLC I/O points
03
Include flyback diodes across relay coils to suppress voltage spikes
Use when designing or documenting low-voltage control panels for pump automation with PLCs.
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