JMoga
Member
I am taking my first attempt at modifying a program on our little bottling machine.
We need to automate a sequence to purge the tank on the filler. Basically what I need to do is push a button on the HMI and have the filler tank fill and drain while under Co2 pressure of 1bar.
I am sure there is a few ways to do this, any ideas on how to program this?
Here's the pieces involved:
RSLogix 5000
PanelView HMI
Control Logix PLC
Product inlet valve – PID
Product Pump – 0-10V speed reference to VFD
Tank Level – PID 0-300mm
Co2 in – PID 0-4bar
Co2 Vent – PID 0-4bar
Product out valve
Desired sequence:
1) Pressurize tank to 1bar /set vent to 1.1bar
2) Once tank is at 1bar go to step 3
3) If tank is GEQ to 140mm go to step 4
I. If tank is LES 140mm go to step 6
4) Open product out valve drain to LEQ 5mm
5) Close product out valve
6) Start pump to desired speed
7) Set tank level to 140mm
8) Once tank is GEQ 140mm turn off pump
9) Open product out valve and drain to LEQ 10mm
10) Stop sequence
I would like a 2 second delay between each step.
Thanks For the Help!