A01508 alarm in siemens 6RA80 DC Drive indicate that the Interconnections to inactive objects exceeded. This means the maximum number of BICO interconnections (signal sinks) when de-activating a drive object was exceeded. When de-activating a drive object, all BICO interconnections (signal sinks) are listed in the following parameters.

• The alarm automatically disappears as soon as no BICO interconnection (value = 0) is entered in r9498[29] and r9499[29].