What it means
A50008, titled COMM BOARD: Alarm 8
in the manuals, is raised by the CBE20 communication board when SINAMICS Link receives a telegram word that is greater than possible in the project. The alarm value stored in r2124 encodes which drive object and which receive word from p8870 are affected, so the offending parameter entry can be identified from the alarm itself. Depending on how the drive is configured, the same condition can also be raised as a fault instead of this alarm.
Why it appears
- CBE20 SINAMICS Link: one of the PZD receive telegram words assigned in p8870 is greater than possible in the project.
What to check
- Read the alarm value in r2124 and interpret it in hexadecimal as yyyyxxxx: the upper part (yyyy) is info. 1, the lower part (xxxx) is info. 2.
- Take each info value in decimal: info. 1 is the drive object number and info. 2 is the index, both from p8870 — this pinpoints the affected SINAMICS Link receive word entry.
- On the CBE20 SINAMICS Link board, correct the parameter assignment of that entry in p8870 (SINAMICS Link PZD receive word); p8811 (SINAMICS Link project selection) is the manual's cross-reference for this alarm.
Reading the message value
- The message value is printed as
Info. 1: %1, info. 2: %2
— the drive inserts the two info values into the alarm text. - The alarm value is held in r2124 and must be interpreted in hexadecimal as yyyyxxxx hex: yyyy = info. 1, xxxx = info. 2.
- Info. 1 (decimal) = drive object number from p8870.
- Info. 2 (decimal) = index from p8870.
Parameters the manual names
- r2124 — alarm value; read it here in hexadecimal to obtain info. 1 and info. 2 for this alarm.
- p8870 — SINAMICS Link PZD receive word; its drive object number and index are reported by the alarm, and this is where the parameter assignment is corrected.
- p8811 — SINAMICS Link project selection; the manual lists it as a cross-reference for this alarm.
Acknowledging and restarting
As an alarm, A50008 does not require an acknowledgement. If the drive configuration raises the same condition as a fault instead, that fault must be acknowledged IMMEDIATELY.
The same on every family
Every manual that describes A50008 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Communication error to the higher-level control system (9) | None | SINAMICS S120, S150 List Manual · p. 3301 |
| G130, G150 | NONE | NONE | Communication error to the higher-level control system (9) | None | SINAMICS G130, G150 List Manual · p. 1938 |
The drives this code lives on
A50008 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A50008 COMM BOARD: Alarm 8 mean on a SINAMICS drive?
The CBE20 SINAMICS Link board has received a telegram word that is greater than possible in the project. The alarm value in r2124 identifies the affected drive object and receive word from p8870.
How do I fix A50008?
Read r2124 in hexadecimal as yyyyxxxx: info. 1 (decimal) is the drive object number and info. 2 (decimal) is the index from p8870. Correct the parameter assignment of that entry in p8870.
Does A50008 have to be acknowledged?
No — as an alarm it does not require an acknowledgement. If the drive is configured to raise the same condition as a fault, that fault must be acknowledged IMMEDIATELY.
What are info 1 and info 2 in alarm A50008?
They are the two halves of the alarm value in r2124, read in hexadecimal as yyyyxxxx. Info. 1 (decimal) is the drive object number and info. 2 (decimal) is the index, both from p8870.
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 A50xxx group · SINAMICS manuals · Siemens manuals