What it means
A33460 is raised for encoder 3 when the input voltage of the connected analog sensor is outside the permissible limits — the sensor's channel A has failed. The drive stores an alarm value in r2124, to be interpreted as a decimal number; it tells which of the three monitoring conditions tripped (see the fault value list below). The descriptions for S120/S150 and for G130/G150 match: same cause, same remedy. Depending on the drive configuration, the same condition can also be output without a reaction (N).
Why it appears
- The input voltage of the analog sensor is outside the permissible limits.
What to check
- Read the alarm value in r2124 and interpret it as a decimal number.
- Alarm value 1: check the output voltage of the analog sensor.
- Alarm value 2: check the voltage setting for each encoder period (p4673).
- Alarm value 3: check the range limit setting and increase it if necessary (p4676).
Reading the message value
- The drive writes the alarm value to r2124; interpret it as a decimal number.
- 1: Input voltage outside detectable measuring range.
- 2: Input voltage outside measuring range set in p4673.
- 3: The absolute value of the input voltage has exceeded the range limit (p4676).
Parameters the manual names
- r2124 — alarm value: read it here, as a decimal number, to find out which of the three voltage conditions raised A33460.
- p4673 — analog sensor channel A voltage per encoder period: check this setting when the alarm value is 2.
- p4676 — analog sensor range limit threshold: check this setting, and increase it if necessary, when the alarm value is 3.
Acknowledging and restarting
A33460 needs no acknowledgment and triggers no protective reaction from the drive, so there is no restart sequence to run. Eliminate the cause as listed above — the condition for the alarm no longer applies once the input voltage of the analog sensor is back within the permissible limits.
The same on every family
Every manual that describes A33460 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. 3161 |
| G130, G150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Encoder 3 | SINAMICS G130, G150 List Manual · p. 1832 |
The drives this code lives on
A33460 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 A33460 mean?
It reports that channel A of the analog sensor at encoder 3 has failed: the input voltage of the analog sensor is outside the permissible limits. The alarm value in r2124, read as a decimal number, shows which of the three limits was violated.
How do I fix alarm A33460?
Check the item the alarm value in r2124 points to: the output voltage of the analog sensor (value 1), the voltage setting per encoder period p4673 (value 2), or the range limit p4676, increasing it if necessary (value 3).
Does A33460 have to be acknowledged?
No. The alarm triggers no drive reaction and needs no acknowledgment; the condition simply has to be eliminated at the sensor or in the settings p4673/p4676.
Where is the alarm value for A33460 stored?
In r2124 — interpret the value there as a decimal number: 1, 2 or 3, each pointing to a different voltage limit.
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