Forwarding Of Faults And Alarms - Siemens Sinamics S110 Function Manual

5.3.5

Forwarding of faults and alarms

Forwarding of 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 affected. 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.
A fault that is 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 of faults and alarms due to BICO interconnections
If two or more drive objects are connected via BICO interconnections, faults and alarms of
CU-type drive objects are forwarded to SERVO-type drive objects.
Fault and alarm classes
There are differentiated alarm messages in the cyclic telegrams between the former alarm
classes "Alarm" and "Fault". Therefore there are 3 additional levels of alarm between the
"pure" alarm and the fault.
The function permits a higher-level control (SIMATIC, SIMOTION, SINUMERIK, etc.) to have
different control reactions to alarm messages from the drive.
The new statuses act as alarms for the drive, therefore there is NO immediate reaction from
the drive (like for the former level "alarm").
Information on alarm classes are described in status word ZSW2 at bit positions bit 5 - 6 (for
SINAMICS) or bit 11-12 (SIMODRIVE 611) (see also "ZSW2" in the chapter "Cyclic
Communication").
ZSW2: Valid for SINAMICS Interface Mode p2038=0 (function diagram 2454)
Bit 5 - 6 Alarm classes alarms
= 0: Alarm (former alarm level)
= 1: Alarm class W_NCA alarms
= 2: Alarm class W_NCB alarms
= 3: Alarm class W_NCC alarms
Drive functions
Function Manual, 10/2008, 6SL3097-4AB10-0BP0
Diagnostics
5.3 Fault and alarm messages
109