No HMI or PLC means more reliability. Period.
How many times have I seen a competitor’s product fail due to communication loss between the PLC, HMI and VFD?
Many, in fact it’s the most unreliable component of a competitors booster !
And to make matters worse, when the VFD becomes obsolete the program stops working! Why? The VFD changes protocol or addressing. The old protocol is now obsolete requiring an entirely new re-write of the PLC code. This usually costs so much you might as well junk the entire booster and buy new!
I laugh when I hear an HMI is required in a booster. How many times have you seen a building engineer sitting in a dark, damp motor control room eating Cheetos in his recliner watching pretty pump Icons turn? – IT DOES NOT HAPPEN!
No, all a building engineer needs is history of operation, current operation, fault history, pressure setpoint, actual setpoint, motor current, motor speed and elapsed run time. TAW provides other less required things like motor voltage, phase voltage, phase amps, fault log, fault types and how often and DC ripple that aid in advanced troubleshooting but normally all that is desired is the basics shown in red below.
How the logs work is we save the last 99 operations. We log the highest current, the highest voltage and the last faults. We log every fault so you can see if there is a common fault. You can also see when the fault occured.
Same goes for heat sink and ambient room temperature, building voltage per phase, DC ripple that indicates power notching sometimes caused by generators. The list is expansive.
Simply push the OK button for 3 seconds and then the down arrow key to scroll through all the monitored variables.
And the best thing is that they all have English descriptors, no looking up codes in a manual! That’s so 1990’s.
Here are some sample screens of what we provide on our VFDs. We have over 80 monitored variables with NO HMI, NO PLC, NO COMS required, just simple, fast and straightforward information to keep your building water pressure constant all the time, everytime.
