Really struggling with sequence control circuit

Thread Starter

Dkjw

Joined Mar 16, 2024
2
Hey guys,

Thanks for having me. I’ve learned lots from this site in the past.

I’m working on a project for a customer. The design is simple. Motor (M1) starts when you hit the start button. Motor (M2) starts after M1 has been running 5 seconds. When you hit stop, M2 stops instantly, and M1 continues to run for 5 seconds

M1 is run through an Altistart soft start, and M2 just uses a motor starter. I can’t seem to get the sequence right.

Part of my problem is that M1 soft-start just needs a momentary button to remove the signal (to stop), unlike a normal starter that just de-energizes the coil to stop. The control is all 120V


I have a hard time w/ control work and could use help.

Thank you!
 

Thread Starter

Dkjw

Joined Mar 16, 2024
2
I feel like I’ve tried it every which way. There’s always a conflict…

image.jpg
 
Last edited by a moderator:

MisterBill2

Joined Jan 23, 2018
19,422
Even if you do not use a PLC for the controls, creating a ladder logic listing will help clarify all of the logic required. Also, consider that there are at least two timers, plus the one to deliver the start and stop commands to the soft start package, one of the the less expensive PLCs from automation direct could even provide a cost reduction, if this system will be in a factory environment, and if it must be reliable.
 
Top