TheWaterboy
Lifetime Supporting Member + Moderator
Building a new station (2 in fact) where I have the option to have AB VFDs .
These are 150 HP pumps so the VFD's are large and I want to monitor them well.
I believe there are AB VFD's (755?) that are intimately connected to the PLC using AOI's to monitor and control every aspect of them and there are the (725?) that are normal VFD with Ethernet comms and I assume CIP message control.
Prior to this I have had PowerFlex 4, 40, 70, 700 etc all controlled with 4-20ma so this comm ability of this quantity will be new to me. I have used CIP to talk to Altivar drives so I know that route is an ugly one.
What do I need to know to determine if I want to switch from 4-20 to Ethenet control? Better PID would be a great bonus as these can work under a pressure condition as well as a flow and level condition.
Are the motion series PLC's required for this? Its just VFD not multi axis motion. I'll be talking to the local reps soon enough and I'd rather sound like an idiot here than in that meeting.
These are 150 HP pumps so the VFD's are large and I want to monitor them well.
I believe there are AB VFD's (755?) that are intimately connected to the PLC using AOI's to monitor and control every aspect of them and there are the (725?) that are normal VFD with Ethernet comms and I assume CIP message control.
Prior to this I have had PowerFlex 4, 40, 70, 700 etc all controlled with 4-20ma so this comm ability of this quantity will be new to me. I have used CIP to talk to Altivar drives so I know that route is an ugly one.
What do I need to know to determine if I want to switch from 4-20 to Ethenet control? Better PID would be a great bonus as these can work under a pressure condition as well as a flow and level condition.
Are the motion series PLC's required for this? Its just VFD not multi axis motion. I'll be talking to the local reps soon enough and I'd rather sound like an idiot here than in that meeting.