Alarm Classes - Siemens SINAMICS S120 Commissioning Manual

Diagnostics
3.5 Fault and alarm messages
3.5.6

Alarm classes

Fault and alarm classes
There are differentiated alarm messages in the cyclic telegrams between the former alarm
classes "Alarm" and "Fault".
The alarm classes have been extended to give 3 additional levels of alarm between the
"pure" alarm and the fault.
The function permits 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" for PROFIdrive communication in /FH1/SINAMICS S120 Function Manual
Drive Functions).
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 A alarms
= 2: Alarm class B alarms
= 3: Alarm class C alarms
ZSW2: Valid for SIMODRIVE 611 Interface Mode p2038=1 (function diagram 2453)
Bit 11 - 12 Alarm classes alarms
= 0: Alarm (former alarm level)
= 1: Alarm class A alarms
= 2: Alarm class B alarms
= 3: Alarm class C alarms
These attributes for differentiating the alarms are implicitly assigned to the appropriate alarm
numbers. The reaction to the existing alarm classes in the alarm is defined by the user
program in the higher-level control.
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Commissioning Manual, (IH1), 01/2012, 6SL3097-4AF00-0BP2
Commissioning Manual