What it means
A49936 is an alarm that reports the protective breaker in the 230 V AC circuit for the lighting supply/socket outlets has tripped. The manual notes that this message is output via the signal source of binector input p6577[20] of the Control Unit, so the state of that protective breaker reaches the drive through the signal source selected at this binector input. The alarm is described the same way for SINAMICS S120 and S150.
Why it appears
- The protective breaker in the 230 V AC circuit for the lighting supply/socket outlets has tripped.
What to check
- Check the 230 V AC circuit for the lighting supply/socket outlets.
- If the 230 V AC circuit itself proves to be in order, check the signal source selected at binector input p6577[20] of the Control Unit, through which this alarm is fed to the drive.
Parameters the manual names
- p6577 (BI: Circuit monitoring functions signal source) — for this alarm, index [20] of this binector input on the Control Unit is the point where the tripped-breaker signal comes in; look at the signal source selected there while troubleshooting.
Acknowledging and restarting
This alarm requires no acknowledgment and causes no drive reaction, so there is nothing to reset at the drive. The work lies in the 230 V AC circuit for the lighting supply/socket outlets; once that circuit has been checked, no further action is needed on the converter.
The same on every family
Every manual that describes A49936 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. 3296 |
The drives this code lives on
A49936 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does SINAMICS alarm A49936 mean?
It reports that the protective breaker in the 230 V AC circuit for the lighting supply/socket outlets has tripped. The message is output via the signal source of binector input p6577[20] of the Control Unit.
Does A49936 stop the drive?
No. The alarm triggers no reaction and requires no acknowledgment; it signals the tripped breaker in the 230 V AC circuit for the lighting supply/socket outlets.
How do I clear alarm A49936?
Check the 230 V AC circuit for the lighting supply/socket outlets, as the manual directs. There is no acknowledgment or reset to perform at the drive for this alarm.
Which parameter belongs to A49936?
p6577, the BI for the circuit monitoring functions signal source: the alarm is output via the signal source of index [20] of this binector input on the Control Unit.
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