bb
bb on DELTA inverters: External base block
DELTA inverters: VFD-EL، MS300
Disconnect the supply and wait for the capacitors to discharge before opening the inverter or touching its terminals.
Common causes
- A digital input set to base block was triggered
- Not a fault: the output was stopped by an external command
Try first
- Remove the base block command
- Review the input settings if it was not intended
