ABB FE04 fault code meaning
ABB / FE04
Series: ACS860-REG
Drive interlock 2 loss
drive
Meaning: Some DIL connectors are not connected.
Possible causes
Source: ACS860 Regenerative Rectifier Control Program Firmware Manual P123
Series: ACS880-DIODE
Safety torque off 2 loss
drive
Meaning: Some STO connectors are not connected.
Possible causes
Source: ACS880 Diode Supply Control Program P187