What it means
F32101 is raised when the zero mark monitoring of Encoder 2 trips: the drive has traveled 1.5 × the parameterized zero mark distance without receiving a zero mark from the encoder. The zero mark distance used for this monitoring is set in p0425 for a rotary encoder and in p0424 for a linear encoder. Depending on how the drive is configured, the same condition can also be output as an alarm or entirely without a reaction.
Why it appears
- Encoder 2 has traveled 1.5 × the zero mark distance stored in the drive without a zero mark being detected — the distance for the zero mark monitoring is set in p0425 (rotary encoder) or p0424 (linear encoder).
What to check
- Check that the encoder cables are routed in compliance with EMC.
- Check the plug connections.
- Check the encoder type — the encoder must deliver equidistant zero marks.
- Adapt p0425, the parameter for the clearance between zero marks.
- If the message is only output above the speed threshold, reduce the filter time in p0438 if necessary.
- When bit 1 in p0437 is active, check p4686.
- Replace the encoder or the encoder cable.
Reading the message value
- The drive stores the fault value in r0949; interpret it as a decimal number.
- The value is the number of increments counted after POWER ON or since the last zero mark that was detected.
- 4 increments correspond to 1 encoder pulse.
Parameters the manual names
- p0425 — zero mark distance of the rotary encoder: the threshold whose exceedance by 1.5 × triggers F32101; adapt it to the clearance between the zero marks of the encoder actually used.
- p0424 — the same zero mark distance when Encoder 2 is a linear encoder.
- r0949 — read the fault value here: the increments counted after POWER ON or since the last detected zero mark.
- p0438 — square-wave encoder filter time: reduce it if the message is only output above the speed threshold.
- p0437 — Sensor Module configuration extended: when bit 1 of this parameter is active, check p4686.
- p4686 — zero mark minimum length: check this setting when bit 1 of p0437 is active.
Acknowledging and restarting
Once the cause has been eliminated, acknowledge the fault; the acknowledgement removes the pulse inhibit so the drive can be restarted. If the drive is configured to output this condition without any reaction, no acknowledgement is required.
What differs between the drive families
Straight from the manuals' own fields — F32101 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 | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS S120, S150 List Manual · p. 3082 |
| G130, G150 | OFF1 (IASC/DCBRK, NONE, OFF2, OFF3, STOP2) | PULSE INHIBIT | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS G130, G150 List Manual · p. 1764 |
The drives this code lives on
F32101 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 fault F32101 mean on a SINAMICS drive?
The zero mark monitoring of Encoder 2 has tripped: the drive has traveled more than 1.5 × the parameterized zero mark distance (p0425 for a rotary, p0424 for a linear encoder) without detecting a zero mark.
What does the fault value of F32101 show?
r0949, interpreted as a decimal number, holds the increments counted after POWER ON or since the last zero mark that was detected; 4 increments correspond to 1 encoder pulse.
Why does F32101 only occur above a certain speed?
If the message is only output above the speed threshold, the manual recommends reducing the square-wave encoder filter time p0438 if necessary.
How do I clear F32101 and restart the drive?
Eliminate the cause first, then acknowledge the fault; this removes the pulse inhibit and the drive can be restarted. With the no-reaction configuration, no acknowledgement is required.
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