What it means
A01631 reports that the drive has detected a configuration of the motor holding brake and SBC (Safe Brake Control) that is not practical — the two functions are set in a combination that cannot be used together. The check runs in the Safety Integrated processing of the Control Unit (the 'SI P1 (CU)' part of the message title). Depending on how the drive is configured, the same condition can also be output as a fault or as a message without a reaction.
Why it appears
- Safe Brake Control is enabled (p9602 = 1) while the motor holding brake is configured as
No motor holding brake available
(p1215 = 0). - Safe Brake Control is enabled (p9602 = 1) while the motor holding brake is configured as
Motor holding brake just like the sequence control, connection via BICO
(p1215 = 3).
What to check
- Read p1215 to see how the motor holding brake is configured; the settings 0 and 3 are the two that clash with SBC.
- Check whether Safe Brake Control is enabled: p9602 = 1 at the Control Unit and, where a Motor Module is used, p9802.
- Correct the parameterization of the motor holding brake and SBC — change p1215 or the SBC enable so that the combination is practical.
Parameters the manual names
- p1215 — motor holding brake configuration: shows the setting under which the brake is controlled; the values 0 and 3 are the ones that trigger this message when SBC is enabled.
- p9602 — SI enable Safe Brake Control (Control Unit): shows whether SBC is enabled in the CU; p9602 = 1 together with p1215 = 0 or p1215 = 3 raises the message.
- p9802 — SI enable Safe Brake Control (Motor Module): the corresponding SBC enable on the Motor Module, checked together with p9602 when correcting the configuration.
Acknowledging and restarting
The alarm requires no acknowledgment. Once the parameterization of the motor holding brake and SBC has been corrected, the alarm goes. If the drive outputs the same condition as a fault instead, the fault is acknowledged immediately.
The same on every family
Every manual that describes A01631 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) | None | SINAMICS S120, S150 List Manual · p. 2628 |
| G130, G150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS G130, G150 List Manual · p. 1433 |
The drives this code lives on
A01631 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 A01631 mean?
The drive has detected a motor holding brake and Safe Brake Control (SBC) configuration that is not practical. Typically SBC is enabled (p9602 = 1) while the holding brake is set to 'no motor holding brake available' (p1215 = 0) or to sequence-control operation via BICO (p1215 = 3).
How do I clear A01631?
Check the parameterization of the motor holding brake and SBC and correct it, using p1215, p9602 and p9802. The alarm itself needs no acknowledgment and goes once the configuration is practical.
Which parameters are involved in A01631?
p1215 (motor holding brake configuration), p9602 (SI enable Safe Brake Control at the Control Unit) and p9802 (the same enable at the Motor Module). The message appears when p9602 = 1 while p1215 = 0 or p1215 = 3.
Can A01631 also appear as a fault?
Yes — depending on the drive's configuration, the same condition can also be issued as a fault or as a message without a reaction. The fault variant is 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 A01xxx group · SINAMICS manuals · Siemens manuals