wine_sparky
Member
Hi,
I'm looking to see if there is a solution for an application I'm attempting.
I have a PF525 running a pump. It is primarily hard-wired control and uses a 4-20ma signal as a speed reference. However, it is also connected to Eth/
IP and setup in a Logix 5000 project. I would like to occasionally control the speed via Eth/IP from my Logix project based on certain situations.
I know how to send the speed reference, but what I'm not sure how to do is to override it's local 4-20ma signal with the ETH/IP signal. I don't want to have to add any additional hard wiring to the VFD.
Does anybody know how to do this?
I'm looking to see if there is a solution for an application I'm attempting.
I have a PF525 running a pump. It is primarily hard-wired control and uses a 4-20ma signal as a speed reference. However, it is also connected to Eth/
IP and setup in a Logix 5000 project. I would like to occasionally control the speed via Eth/IP from my Logix project based on certain situations.
I know how to send the speed reference, but what I'm not sure how to do is to override it's local 4-20ma signal with the ETH/IP signal. I don't want to have to add any additional hard wiring to the VFD.
Does anybody know how to do this?