Zeror.ai Error Codes ABB 2391

ABB 2391

Brand: ABBModel: ACS880Error code: 2391

What the Fault Means

Fault: BU current difference

Likely causes

  • AC phase current difference between parallel-connected inverter modules is excessive.

Solution and Safe First Checks

  1. Check motor cabling. Check there are no power factor correction capacitors or surge absorbers in motor cable. Check the auxiliary code (format XXXY YYZZ). “XXX” specifies the source of the first error (see “YYY”). “YYY” specifies the module through which BCU control unit channel the fault was receiv

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related ABB error codes

Source: the Zeror.ai industrial fault database and ABB technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.

ABB 2391 · Zeror.ai