What it means
A05065 is raised when the voltage measurement does not supply any plausible values, and the measurement is therefore not used by the drive. The drive takes no automatic action; it simply continues without this measurement. The alarm value stored in r2124 identifies, bitwise binary, which phase is affected. Depending on how the drive is configured, the same condition can also be issued as a fault or as a message without reaction.
Why it appears
- The voltage measurement does not supply any plausible values and is not used.
What to check
- Deactivate the voltage measurement by setting p0247.0 = 0.
- Deactivate flying restart with voltage measurement by setting p0247.5 = 0.
- Deactivate the fast flying restart by setting p1780.11 = 0.
Reading the message value
- The drive writes the alarm value to r2124; interpret it bitwise binary.
- Bit 1: Phase U
- Bit 2: Phase V
- Bit 3: Phase W
Parameters the manual names
- p0247 (voltage measurement configuration): bit 0 switches the voltage measurement off (p0247.0 = 0) and bit 5 switches flying restart with voltage measurement off (p0247.5 = 0) to deactivate the alarm.
- p1780 (motor model adaptation configuration): bit 11 switches the fast flying restart off (p1780.11 = 0) to deactivate the alarm.
- r2124 (alarm value): holds the alarm value of this message; read it bitwise binary to see which phase is affected.
Acknowledging and restarting
No acknowledgement is needed while the condition appears as alarm A05065; it is the parameterization above that deactivates the message. If the drive is configured to issue the same condition as a fault instead, the fault must be acknowledged immediately — the manuals give NONE as the response for this variant, with OFF1, OFF2, OFF3 and STOP2 as the possible responses. As a message without reaction, nothing has to be acknowledged either.
What differs between the drive families
Straight from the manuals' own fields — A05065 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Power electronics faulted (5) | Power Module | SINAMICS S120, S150 List Manual · p. 2752 |
| G130, G150 | NONE | NONE | Power electronics faulted (5) | Power Module | SINAMICS G130, G150 List Manual · p. 1525 |
| G120 | NONE | NONE | Power electronics faulted (5) | — | SINAMICS G120 · p. 869 |
The drives this code lives on
A05065 is described for G120, G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does SINAMICS alarm A05065 mean?
The voltage measurement does not supply any plausible values, so the drive does not use it. The alarm value in r2124 shows bitwise which phase (U, V or W) is affected.
How do I clear alarm A05065?
Set p0247.0 = 0 to deactivate the voltage measurement, p0247.5 = 0 to deactivate flying restart with voltage measurement, and p1780.11 = 0 to deactivate the fast flying restart. No acknowledgement is required; this parameterization deactivates the alarm.
What is the alarm value r2124 for A05065?
Read r2124 bitwise binary: Bit 1 means Phase U, Bit 2 means Phase V and Bit 3 means Phase W.
Why does A05065 also appear as a fault?
Depending on the drive's configuration, the same condition can be issued as a fault or as a message without reaction. In the fault variant it must 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 A05xxx group · SINAMICS manuals · Siemens manuals