Logixpro Dual Compressor | Exercise 2 [exclusive]

Mirror Rung 005 for Compressor 2, swapping Lead/Lag logic.

Maria stared at the LogixPro window still open on her laptop. The virtual pressure gauge was steady at 95 PSI. The virtual “Dual Compressor Exercise 2” completion banner flashed green. logixpro dual compressor exercise 2

Beyond the programming challenge, Exercise 2 illustrates critical industrial concepts: Equalized Wear: Mirror Rung 005 for Compressor 2, swapping Lead/Lag logic

She jumped to the control cabinet, fingers flying over the old Allen-Bradley pushbuttons. She disabled the automatic lead-lag and forced Atlas into continuous run. Then she saw the problem: Atlas’s unloader solenoid was sticky. The compressor was starting under full load, drawing 300% amperage. The thermal overload relay clicked once, twice—on the third click, it would trip. Then she saw the problem: Atlas’s unloader solenoid

The primary goal is to maintain tank pressure while alternating the load between two separate motors.

The solution requires a minimum of three logic components: two for the motor outputs and one internal "toggle" bit to track which motor was used last. Create a standard seal-in circuit to enable the system. Input : Start Button (I:1/0) and Stop Button (I:1/1). Output : Run Light (O:2/2) to indicate the system is active. 2. The Toggle Logic (The "Flip-Flop")

When pressure hits High Pressure (100 PSI), reset the Lag_Start_Request bit and stop the lag compressor. The lead compressor may also stop if pressure is high.