What would cause the ATV680 AFE drives to show incorrect line voltage measurements on the HMI?
Issue:
ATV680 AFE drives is showing incorrect line voltage measurements on the HMI?
Product Line:
ATV680 and ATV980 enclosed drives.
Environment:
All
Cause:
Loose wiring connection, blown fuse etc.
Resolution:
If the input Line voltage is measuring the correct line voltage phase to phase and to ground.
Remove power and check the following:
-Check the main power fuses they have a tab that will popout to show if they are blown.
-Check the L1 L2 L3 input fuses on the RFI filter circuit board (bottom right corner of ATV680 enclosure if you're facing the drive)
-Check for loose wires on the L1 L2 L3 terminals of the RFI filter circuit board.
-Hire field services to come out and check or replace the RFI circuit board or the Power board.
Example of incorrect input or line voltage readings on the HMI> Drive is running and or in IDLE mode.
Main menu
Display menu
Drives Parameters
Mains voltage 338vac
L1= 239vac is incorrect (480vac is correct reading)
L2= 239vac is incorrect (480vac is correct reading)
L3= 480vac is the correct reading
DC bus= 680vdc (Running)
DC bus= <20vdc (IDLE mode)
In this example the L2 wire was disconnected on the RFI filter board.