What it means
This alarm reports that the protective breaker in the 230 V AC circuit of the outgoing feeder of the cooling unit has tripped. The drive outputs the message via the signal source of binector input p6577[18] of the Control Unit. Depending on how the message is configured, the same condition can also be issued as a fault instead of an alarm.
Why it appears
- The protective breaker in the 230 V AC circuit of the cooling unit's outgoing feeder has tripped.
What to check
- Check the 230 V AC circuit of the outgoing feeder of the cooling unit.
Parameters the manual names
- p6577 — BI: circuit monitoring functions signal source. The alarm is output via the signal source of binector input p6577[18] of the Control Unit, so this parameter shows where the protective-breaker signal of the cooling unit's outgoing feeder is connected.
Acknowledging and restarting
As an alarm, the message requires no acknowledgement. If the same condition is issued as a fault, the drive objects are given an OFF1 stop — the exact OFF reaction depends on the drive object type — and the fault must be acknowledged immediately before the drive will run again.
The same on every family
Every manual that describes A49934 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | General drive fault (19) | None | SINAMICS S120, S150 List Manual · p. 3295 |
The drives this code lives on
A49934 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does A49934 mean on a SINAMICS S120 or S150?
It reports that the protective breaker in the 230 V AC circuit of the cooling unit's outgoing feeder has tripped. The message is output via the signal source of binector input p6577[18] of the Control Unit.
How do I reset alarm A49934?
As an alarm it needs no acknowledgement. Check the 230 V AC circuit of the outgoing feeder of the cooling unit — that is the remedy the manual gives; if the condition is issued as a fault, it must be acknowledged immediately.
Does A49934 stop the drive?
Not as an alarm — the message itself triggers no reaction. When the same condition is configured as a fault, the drive objects receive an OFF1 stop (the exact reaction depends on the drive object type) and the fault must be acknowledged immediately.
Which parameter is linked to A49934?
p6577, the circuit monitoring functions signal source: the alarm is output via binector input p6577[18].
Codes next to this one
Source
Written from Siemens' own List Manuals and operating instructions; every number, designation and parameter on this page is checked against them before publication.
All SINAMICS codes: fault and alarm codes · the A49xxx group · SINAMICS manuals · Siemens manuals