What it means
A08504 is an alarm from the PN/COMM board reporting an internal cyclic data transfer error: the cyclic actual values and/or the setpoints were not transferred within the specified times. The same condition can also be issued as the fault F08504; which of the two the drive raises depends on its configuration. The value that accompanies the message is meant only for internal Siemens troubleshooting.
Why it appears
- The cyclic actual values and/or setpoints were not transferred within the specified times.
What to check
- Check the parameterizing telegram — the entries it contains, such as Ti, To, Tdp, etc.
Reading the message value
- The drive stores the alarm value in r2124; the G130/G150 manual instructs to interpret it as a decimal number.
- The manuals print no bit decoding for this value — per the manuals, it is
Only for internal Siemens troubleshooting
.
Parameters the manual names
- r2124 — alarm value: this is where the drive places the value belonging to A08504; read it out if you need to hand the message over for internal Siemens troubleshooting.
Acknowledging and restarting
A08504 is an alarm, and the manuals assign no acknowledgement to the alarm itself. They do print an acknowledgement for the fault variant F08504: it must be acknowledged immediately once the cause has been rectified.
What differs between the drive families
Straight from the manuals' own fields — A08504 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | Communication error to the higher-level control system (9) | None | SINAMICS S120, S150 List Manual · p. 2918 |
| G130, G150 | NONE | NONE | Communication error to the higher-level control system (9) | None | SINAMICS G130, G150 List Manual · p. 1634 |
The drives this code lives on
A08504 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 SINAMICS alarm A08504 mean?
The PN/COMM board reports an internal cyclic data transfer error: the cyclic actual values and/or setpoints were not transferred within the specified times.
How do I fix A08504 on a G130, G150, S120 or S150?
The remedy the manuals give is a single step: check the parameterizing telegram (Ti, To, Tdp, etc.). No other remedy is printed for this message.
What is the alarm value in r2124 for A08504?
It is the value the drive enters with the message, to be interpreted as a decimal number. The manuals state it serves only internal Siemens troubleshooting and print no bit decoding.
Does A08504 have to be acknowledged?
No acknowledgement is assigned to the alarm itself. If the condition appears as the fault F08504 instead, it must be acknowledged immediately.
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 A08xxx group · SINAMICS manuals · Siemens manuals