Hi all and thanks :dance:

I am going to use a Siemens Logo! PLC for my timer and pump control.

A very reliable unit I used them for control systems were I was working before they went belly up

It has a back up battery that lasts for 72 hours.

It can also be set up that the program will stay at the state it was in before power failer. also during power failer and restore it will have a 10-20 minute delay in restating any HPS or HID lights. so not to hot strike them.

It has 8 inputs and 4 outputs.
first 4 inputs are on off two can count to 2000 hz and last to are 0-10volt analog. all are digital or configurable like stated above.

Can be expandable to add more I/O and I also have a 2 channel RTD input module for temp control as well.

I will keep you all posted as it is being created the program, wireing ect.

the outputs will be SSR (solid state relays) no contacts to burn out and can have a rating of 90 amps or more.

All control switching, Level switchs ect will be at 12 or 24volts for safety.

The power supply is universal 90-240 volts AC 50-60 hz.

More info would be nice as I progress.

Stated woking on the program already :stoned:

the unit when finished won't be cheap but I have lots of parts when I was building automated control systems for were I was working till they went belly up. But it depends on what one calls expensive. I prefer reliablity over cost cutting.

thanks again all :smokin: