Troubleshooting Blank Display on Altivar 61 & 71 Drives
var ATV61 and ATV71
All of the ATV61 and ATV71 drives
DC bus is not charging, bad power board or MCB
- Check Mains voltage on L1 L2 L3,
- Check DC bus voltage on PA+ and PC ( if this drive has a DC choke check to make sure its connected to PA and PO).
- Check the +24vdc and +10vdc power supplies. (measure each one to COM)
- Power cycle the drive, if needed, and see if the display comes back up.
- Check to see if there is an Ethernet cable connected into the Modbus port.