Forwarding Faults And Alarms - Siemens SINAMICS DCM Operating Instructions Manual

10.30.5.5

Forwarding faults and alarms

Forwarding faults and alarms of the CU
When faults or alarms are triggered on the drive object of the CU, it is always assumed that
central functions of the drive unit are involved. For this reason, these faults and alarms are
not only signaled on the drive object of the CU, but are also forwarded to all other drive
objects. The fault reaction affects the drive object of the CU and all other drive objects. This
behavior also applies to the faults set in a DCC chart on the CU with the aid of DCB STM.
A fault that was set on the drive object of the CU must be acknowledged on all drive objects
to which this fault was forwarded. In this way, the fault is then automatically acknowledged
on the drive object of the CU. Alternatively, all faults of all drive objects can also be
acknowledged on the CU.
If a set alarm is reset on the drive object of the CU, this alarm also disappears automatically
on the other drive objects to which this alarm was forwarded.
Forwarding faults and alarms as a result of BICO interconnections
If two or more drive objects are connected via BICO interconnections, then faults and alarms
from CU, TM31, TM15, TM17, and TM15DIDO drive objects are forwarded to DC_CTRL-
type drive objects. Faults are not forwarded within these two groups of drive object types.
This behavior also applies to the faults set in a DCC chart on the above drive object types
with the aid of DCB STM.
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
Descriptions of functions
10.30 Diagnostics
495