What it means
A31462 is raised when the analog sensor configured as Encoder 1 has neither channel A nor channel B activated — the sensor's configuration contains no active signal channel. The condition is normally output as an alarm; depending on the drive's configuration it can also be issued without any reaction (N).
Why it appears
- The analog sensor of Encoder 1 is configured without channel A and without channel B being activated, so no sensor channel is active.
What to check
- Activate channel A and/or channel B for the analog sensor in p4670 (Analog sensor configuration).
- Then check the encoder configuration via p0404.17, as the remedy for this code instructs.
Parameters the manual names
- p4670 — Analog sensor configuration (Ana_sens config): here you activate channel A and/or channel B of the analog sensor, which is the direct fix for this alarm.
- p0404 — Encoder configuration effective (Enc_config eff): check the encoder configuration via p0404.17 after correcting the channel activation.
Acknowledging and restarting
No acknowledgment is required for this message; it is resolved by correcting the encoder configuration — activating channel A and/or channel B in p4670 and checking p0404.17.
The same on every family
Every manual that describes A31462 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | Encoder 1 | SINAMICS S120, S150 List Manual · p. 3057 |
| G130, G150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | Encoder 1 | SINAMICS G130, G150 List Manual · p. 1742 |
The drives this code lives on
A31462 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 A31462 mean?
It means that for Encoder 1, set up as an analog sensor, neither channel A nor channel B is activated, so the sensor has no active signal channel. Depending on the drive configuration, the same condition can also be issued without any reaction (N).
How do I fix alarm A31462?
Activate channel A and/or channel B for the analog sensor in p4670 (Analog sensor configuration) and then check the encoder configuration via p0404.17. No acknowledgment is required.
Which parameter activates the channels of the analog sensor for A31462?
p4670 — Analog sensor configuration (Ana_sens config). Set it so that channel A and/or channel B is active, and verify the encoder configuration with p0404.17.
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 A31xxx group · SINAMICS manuals · Siemens manuals