The scenario
A 24V PLC controls a lubrication pump that runs for a set ON interval and then pauses for an OFF interval, with manual override and E-stop protection.
What is in this drawing
Read the decisions behind it.
01
Seal-in circuit latches pump request from auto cycle or manual override until E-stop.
02
TON timers define the ON and OFF intervals for cyclic lubrication.
03
Pump command coil is de-energized when the ON timer reaches its preset.
Reuse for periodic dosing, lubrication, or any relay timer control needing adjustable ON/OFF cycling with manual override.
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