What it means
F32151 (Encoder 2: Encoder speed for initialization AB too high
) is raised when the encoder connected as encoder 2 turns too fast while its Sensor Module is being initialized. During this initialization the drive monitors the encoder speed, and if the speed is too high at that moment the message is issued at the Sensor Module for encoder 2. Depending on the drive's configuration, the same condition can also be output as an alarm (A) or with no reaction (N) instead of a fault.
Why it appears
- The encoder speed was too high while the Sensor Module was initializing — the encoder on encoder 2 was turned faster during initialization than the drive permits for this procedure.
What to check
- Reduce the speed of the encoder accordingly during the Sensor Module initialization.
- If the speed cannot be reduced sufficiently, deactivate the monitoring with bit p0437.29 of p0437 (Sensor Module configuration extended).
Parameters the manual names
- p0437 (Sensor Module configuration extended): bit signal p0437.29 deactivates the encoder-speed monitoring during Sensor Module initialization, so the drive no longer raises this fault when the encoder moves during initialization.
Acknowledging and restarting
After the encoder speed has been reduced or the monitoring has been deactivated, acknowledge the fault with the pulses inhibited: withdraw the pulse enable, acknowledge the message, and then return the pulse enable so the drive can be started again.
What differs between the drive families
Straight from the manuals' own fields — F32151 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Servo: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) Vector: OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) Hla: OFF1 (NONE, OFF2, OFF3, STOP2) | PULSE INHIBIT | Error in the parameterization / configuration / commissioning procedure (18) | Sensor Module Encoder 2 | SINAMICS S120, S150 List Manual · p. 3099 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) | PULSE INHIBIT | Error in the parameterization / configuration / commissioning procedure (18) | Sensor Module Encoder 2 | SINAMICS G130, G150 List Manual · p. 1777 |
The drives this code lives on
F32151 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 fault F32151 mean?
The speed of encoder 2 was too high while its Sensor Module was initializing, so the drive raised this fault at the Sensor Module for encoder 2.
How do I clear fault F32151?
Reduce the encoder speed during initialization, then acknowledge the fault with the pulses inhibited and restart. If the speed cannot be reduced, deactivate the monitoring with p0437.29.
Which parameter switches off the initialization speed monitoring for F32151?
Bit 29 of p0437 (Sensor Module configuration extended), written p0437.29, deactivates the monitoring.
Can F32151 also appear as an alarm?
Yes. Depending on the drive's configuration, the same condition can be output as an alarm (A) or with no reaction (N) instead of a fault.
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 F32xxx group · SINAMICS manuals · Siemens manuals