What it means
A32902 appears with the message text Encoder 2: SPI-BUS error occurred
. The Sensor Module Encoder 2 reports it when an error occurs while its internal SPI bus is being operated. Depending on how the drive is configured, the same condition can also be output as a fault (F) or as a message with no reaction (N).
Why it appears
- An error occurred while the internal SPI bus of the Sensor Module Encoder 2 was being operated.
What to check
- Replace the Sensor Module connected as Encoder 2.
- If required, upgrade the firmware in the Sensor Module.
- Contact Technical Support.
Reading the message value
- The message value is the alarm value from r2124, which is to be interpreted hexadecimal.
- For this code the manual gives no decoding of the value: it states that the content of r2124 is
Only for internal Siemens troubleshooting
.
Parameters the manual names
- r2124 — alarm value: supplies the value that appears as the message value of A32902; read it hexadecimal. The manual reserves its content for internal Siemens troubleshooting, so there is no decoding for you to apply yourself.
Acknowledging and restarting
As an alarm, A32902 requires no acknowledgement; there is no separate reset step beyond carrying out the remedy above. If the drive is configured to output the same condition as a fault (F), it must be acknowledged immediately.
What differs between the drive families
Straight from the manuals' own fields — A32902 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | — | — | Hardware/software error (1) | Sensor Module Encoder 2 | SINAMICS S120, S150 List Manual · p. 3126 |
| G130, G150 | NONE | NONE | Hardware/software error (1) | Sensor Module Encoder 2 | SINAMICS G130, G150 List Manual · p. 1803 |
The drives this code lives on
A32902 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 A32902 mean?
It reports an error that occurred while the internal SPI bus of the Sensor Module used as Encoder 2 was being operated. The message belongs to the Sensor Module Encoder 2 component.
How do I clear SINAMICS A32902?
Replace the Sensor Module and, if required, upgrade the firmware in it. As a further step, contact Technical Support.
What is the alarm value r2124 for A32902?
The message value of A32902 contains the alarm value from r2124, interpreted hexadecimal. The manuals state that this value is only for internal Siemens troubleshooting and print no decoding for it.
Can A32902 also appear as a fault?
Yes. Depending on the drive configuration, the same condition can also be output as a fault (F) or as a message with no reaction (N). If it appears as a fault, 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 A32xxx group · SINAMICS manuals · Siemens manuals