What it means
A33463 is reported by Encoder 3 when the position value of the connected analog sensor leaves the permissible range of -0.5 ... +0.5. It is an alarm: the drive does not react to it automatically, and depending on the drive configuration the same condition can also be output as a message with no reaction. Which source supplied the out-of-range value is stored as an alarm value in r2124.
Why it appears
- The position value of the analog sensor connected to Encoder 3 has exceeded the permissible range of -0.5 ... +0.5. The alarm value indicates whether the value came from the LVDT sensor or from the encoder characteristic.
What to check
- Read the alarm value in r2124 and interpret it as a decimal number to see which source delivered the out-of-range position value.
- For alarm value = 1: check the LVDT ratio (p4678).
- For alarm value = 1: check the reference signal connection at track B.
- For alarm value = 2: check the coefficients of the characteristic (p4663 ... p4666).
Reading the message value
The drive stores the alarm value in r2124; the manual says to interpret it as a decimal number. The message value printed as %1 is this alarm value.
- 1: Position value from the LVDT sensor.
- 2: Position value from the encoder characteristic.
Parameters the manual names
- r2124 — alarm value of this alarm: read it as a decimal number to determine whether the out-of-range position value came from the LVDT sensor (1) or from the encoder characteristic (2).
- p4678 — LVDT ratio of the analog sensor: check this setting when the alarm value is 1.
- p4663 ... p4666 — coefficients of the encoder characteristic (K0 ... K3): check these settings when the alarm value is 2.
Acknowledging and restarting
No acknowledgement is required. A33463 is an alarm without an automatic drive reaction; it goes away once the position value of the analog sensor is back within the permissible range of -0.5 ... +0.5.
The same on every family
Every manual that describes A33463 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) | Encoder 3 | SINAMICS S120, S150 List Manual · p. 3162 |
| G130, G150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Encoder 3 | SINAMICS G130, G150 List Manual · p. 1833 |
The drives this code lives on
A33463 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 A33463 mean?
Encoder 3 reports that the position value of the connected analog sensor is outside the permissible range of -0.5 ... +0.5. It is an alarm to which the drive does not react automatically.
How do I fix alarm A33463?
Read the alarm value in r2124 as a decimal number. For value 1 check the LVDT ratio (p4678) and the reference signal connection at track B; for value 2 check the coefficients of the characteristic (p4663 ... p4666).
Does A33463 have to be acknowledged?
No. The alarm requires no acknowledgement and clears once the position value returns to the permissible range of -0.5 ... +0.5.
How can I see which value triggered A33463?
The alarm value in r2124, interpreted as a decimal number: 1 means the position value from the LVDT sensor, 2 means the position value from the encoder characteristic.
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 A33xxx group · SINAMICS manuals · Siemens manuals