What it means
A01064 signals an internal error of the Control Unit (CU): the checksum check of the CU program memory has failed, i.e. a CRC error was detected in the program memory. Depending on the drive's configuration, the same condition can also be output as a fault instead of as an alarm.
Why it appears
- The Control Unit has detected a checksum error (CRC error) in its program memory.
What to check
- Carry out a POWER ON (switch-off/switch-on) for all components.
- Upgrade the firmware to a later version.
- Contact Technical Support.
Acknowledging and restarting
As an alarm, A01064 requires no separate acknowledgment. If the drive raises the same condition as a fault, acknowledge it immediately with a POWER ON: switch the power supply of all components off and on again. This power off/on cycle is also the first remedy step; if the checksum error reappears afterwards, continue with the firmware upgrade and, as the last step, Technical Support.
What differs between the drive families
Straight from the manuals' own fields — A01064 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | — | Hardware/software error (1) | Control Unit (CU) | SINAMICS S120, S150 List Manual · p. 2573 |
| G130, G150 | NONE | NONE | Hardware/software error (1) | Control Unit (CU) | SINAMICS G130, G150 List Manual · p. 1386 |
| G120 | NONE | NONE | Hardware/software error (1) | — | SINAMICS G120 · p. 829 |
The drives this code lives on
A01064 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 A01064 mean?
The Control Unit (CU) has detected a checksum error (CRC error) in its program memory — an internal CU error. Depending on the configuration, the drive can also report the same condition as a fault.
How do I clear SINAMICS A01064?
Carry out a POWER ON: switch all components off and on again. If the error persists, upgrade the firmware to a later version and contact Technical Support.
Does A01064 have to be acknowledged?
As an alarm it does not require a separate acknowledgment. When the condition is output as a fault, it is acknowledged immediately by a POWER ON (switch-off/switch-on).
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