What it means
A32407 ("Encoder 2: Function limit reached") is issued when Encoder 2 has reached one of its function limits. The manual's advice at this point is unambiguous: a service is recommended. Which of the encoder's function limits has been reached is reported as an alarm value in r2124. Depending on how the drive is configured, the same condition can also be issued as a fault (F) or with no reaction (N) instead of this alarm.
Why it appears
- Encoder 2 has reached one of its function limits — the manual recommends a service.
What to check
- Read the alarm value in r2124 (interpret decimal) to identify which function limit has been reached: 1 = incremental signals, 3 = absolute track, 4 = code connection.
- Select the encoder in p4650 and read its actual functional reserve in r4651 to see how much reserve the encoder still has.
- Perform service.
- Replace the encoder if necessary.
Reading the message value
- The drive writes an alarm value to r2124; interpret it decimal.
- 1: Incremental signals
- 3: Absolute track
- 4: Code connection
Parameters the manual names
- r2124 (Alarm value): read here, interpreted decimal, which function limit Encoder 2 has reached (1, 3 or 4).
- p4650 (Encoder functional reserve component number): enter the encoder whose functional reserve you want to display.
- r4651 (Encoder functional reserve): shows the actual functional reserve of the encoder selected in p4650; the manual points to this value in connection with this message.
Acknowledging and restarting
As an alarm, the message requires no acknowledgement and the drive does not execute a protective reaction. If the drive is configured to output the same condition as a fault instead, that fault must be acknowledged IMMEDIATELY.
The same on every family
Every manual that describes A32407 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 2 | SINAMICS S120, S150 List Manual · p. 3103 |
| G130, G150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS G130, G150 List Manual · p. 1781 |
The drives this code lives on
A32407 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 A32407 mean?
It reports that Encoder 2 has reached one of its function limits, and the manual recommends a service at this point. The alarm itself triggers no protective reaction in the drive.
How can I see which function limit the encoder has reached?
Read the alarm value in r2124 and interpret it decimal: 1 stands for the incremental signals, 3 for the absolute track and 4 for the code connection.
How do I check how much functional reserve the encoder still has?
Select the encoder in p4650 and read its actual functional reserve in r4651.
Does A32407 have to be acknowledged?
No — as an alarm it requires no acknowledgement. Only when the same condition is configured as a fault must it be acknowledged IMMEDIATELY.
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 A32xxx group · SINAMICS manuals · Siemens manuals
