What it means
A32999 appears when the Sensor Module connected as encoder 2 reports an alarm whose number the Control Unit firmware cannot interpret. The manual names the typical trigger: the firmware on the Sensor Module is more recent than the firmware on the Control Unit, so the Control Unit receives an alarm number it does not know. Depending on how the drive is configured, the same condition can also be output as a fault (F) or as a message without a reaction (N).
Why it appears
- An alarm has occurred on the Sensor Module for encoder 2 that the Control Unit firmware cannot interpret.
- The firmware on the Sensor Module is more recent than the firmware on the Control Unit.
What to check
- Read the alarm number in r2124 and interpret it as a decimal number, so you know which unknown alarm the Sensor Module has raised.
- Compare the firmware versions: r0148 shows the Sensor Module firmware version, r0018 the Control Unit firmware version.
- Either replace the firmware on the Sensor Module with an older firmware version, or upgrade the firmware on the Control Unit.
- If you need to know what the new alarm means, the manual notes:
If required, the significance of this new alarm can be read about in a more recent description of the Control Unit.
Reading the message value
- The message value is displayed as “New message: %1”; the placeholder stands for the number of the alarm that the Control Unit cannot interpret.
- The alarm value is stored in r2124 and is to be interpreted as a decimal number — it is the alarm number of the unknown Sensor Module alarm.
Parameters the manual names
- r2124 — alarm value; read it as a decimal number to obtain the alarm number of the unknown encoder 2 alarm.
- r0148 — Sensor Module firmware version (SM FW version); shows the firmware currently on the Sensor Module before you replace it with an older version.
- r0018 — Control Unit firmware version (CU FW version); shows the firmware currently on the Control Unit before you upgrade it.
Acknowledging and restarting
In every variant of this message the drive performs no automatic response. As an alarm and as a message without reaction, no acknowledgement is required; if the drive is configured to output the same condition as a fault, it must be acknowledged IMMEDIATELY and a POWER ON is required.
The same on every family
Every manual that describes A32999 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Sensor Module Encoder 2 | SINAMICS S120, S150 List Manual · p. 3132 |
| G130, G150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Sensor Module Encoder 2 | SINAMICS G130, G150 List Manual · p. 1807 |
The drives this code lives on
A32999 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 A32999 on my SINAMICS mean?
The Sensor Module for encoder 2 has raised an alarm whose number the Control Unit firmware cannot interpret. This happens, according to the manual, when the Sensor Module firmware is more recent than the Control Unit firmware.
How do I fix A32999?
Either replace the firmware on the Sensor Module with an older version, or upgrade the firmware on the Control Unit. The versions currently installed can be read in r0148 (Sensor Module) and r0018 (Control Unit).
Where can I see which alarm the Sensor Module raised?
The alarm value is in r2124 and must be read as a decimal number; the message value itself is shown as “New message: %1”. The significance of a new alarm can be looked up in a more recent description of the Control Unit.
Does A32999 stop the drive?
No. In every variant the drive performs no automatic response. As an alarm and as a no-reaction message no acknowledgement is needed, while the fault variant must be acknowledged IMMEDIATELY with a POWER ON.
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