ABB 2026 fault code meaning

ABB / 2026

Series: ACH550

DC voltage oscillation in the intermediate DC circuit

drive

Meaning: DC voltage oscillation in the intermediate DC circuit, possibly caused by power supply phase loss or a blown fuse.

Possible causes

Source: ACH550-01 Drive User Manual P383

Series: ACL30

Encoder emulation error

drive

Meaning: Note: The new settings take effect only after parameters 90.06 ENC PAR REFRESH have been used or the next time the JCU control unit is started.

Possible causes

Source: ACL30 Elevator Drive User Manual P271

Series: ACS350

Power supply phase loss

drive

Meaning: Voltage oscillation in the intermediate DC circuit, possibly caused by power supply phase loss or a blown fuse.

Possible causes

Source: ACS350 User Manual P248

Series: ACS355

Intermediate DC circuit voltage oscillation

drive

Meaning: Voltage oscillation in the intermediate DC circuit, possibly caused by power supply phase loss or a blown fuse.

Possible causes

Source: ACS355 User Manual P338