tarrant79
Member
To begin, before the Trolls pop out, I know you get your tools/test your tools/find the right tools. Thats great, but at this point Im on a startup and way behind schedule and any help would be greatly appreciated. I'm running A ControlOgix L82 PLC at v32.
I have a 3 pump configuration Im controlling: Lead/Lag/STDBY. I am controlling the Pump Lead VFD speed based on a Pressure Transducer Setpoint...25psi hit SP, leave VFD at current SPD.
So far I can meet Pressure just fine with 1 pump, but the system may need 2 pump capacity in the future, I would like to modulate with the Lead pump and just start the lag pump at 100% and drop the Lead pump to 25% and modulate from there(I don't know if this is kosher, but it would simplify my code).
So far 1 Lead pump is modulating on pressure just fine, but its all just ladder logic code(no UDTs and no AOIs). This is going to make it real hard for me to code, changing the LEAD/LAG pumps, excetra. I was wondering if anyone had any simplified Lead/Lag/Stdby AOI's they've used before that worked well for them, they could send my way.
Any help would be awesome, this project was pushed with WAY TO SHORT a timeline and now Im just trying to pick up the debris.
Thanks!
I have a 3 pump configuration Im controlling: Lead/Lag/STDBY. I am controlling the Pump Lead VFD speed based on a Pressure Transducer Setpoint...25psi hit SP, leave VFD at current SPD.
So far I can meet Pressure just fine with 1 pump, but the system may need 2 pump capacity in the future, I would like to modulate with the Lead pump and just start the lag pump at 100% and drop the Lead pump to 25% and modulate from there(I don't know if this is kosher, but it would simplify my code).
So far 1 Lead pump is modulating on pressure just fine, but its all just ladder logic code(no UDTs and no AOIs). This is going to make it real hard for me to code, changing the LEAD/LAG pumps, excetra. I was wondering if anyone had any simplified Lead/Lag/Stdby AOI's they've used before that worked well for them, they could send my way.
Any help would be awesome, this project was pushed with WAY TO SHORT a timeline and now Im just trying to pick up the debris.
Thanks!