What it means
A01840 reports that an SMI (SINAMICS Sensor Module Integrated) or DQI (DRIVE-CLiQ Sensor Integrated) component has been found without motor data — for example, an SMI that has been installed as a replacement part. The drive does not trip on this alarm; it indicates that the motor/encoder data on the component is missing. The message value carries the component number, so the affected component can be identified from the target topology.
Why it appears
- An SMI/DQI without motor data has been found — for example, an SMI installed as a replacement part.
What to check
- Read the component number from the alarm value in r2124 (interpret the value as a decimal number); it identifies the affected component from the target topology.
- Download the SMI/DQI data (motor/encoder data) from the data backup again, using p4690 and p4691.
- Carry out a POWER ON (switch-off/switch-on) for this component.
Reading the message value
- Message value: Component number: %1 — the drive enters the number of the component concerned.
- Alarm value (r2124, interpret decimal): Component number from target topology.
Parameters the manual names
- r2124 — alarm value; here it holds the component number from the target topology and is interpreted as a decimal number.
- p4690 — SMI spare part component number; names the component whose data is downloaded.
- p4691 — SMI spare part save/download data; used to download the SMI data (motor/encoder data) from the data backup again.
Acknowledging and restarting
No acknowledgement is required for this alarm. After the SMI/DQI data has been downloaded again from the data backup, carry out a POWER ON (switch-off/switch-on) for the affected component.
The same on every family
Every manual that describes A01840 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | NONE | NONE | Hardware/software error (1) | None | SINAMICS G130, G150 List Manual · p. 1488 |
| S120, S150 | NONE | NONE | Hardware/software error (1) | None | SINAMICS S120, S150 List Manual · p. 2709 |
The drives this code lives on
A01840 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 A01840 mean?
The drive has found an SMI or DQI component (SINAMICS Sensor Module Integrated / DRIVE-CLiQ Sensor Integrated) without motor data — typically an SMI that has been installed as a replacement part.
How do I fix alarm A01840?
Download the SMI/DQI data (motor/encoder data) from the data backup again using p4690 and p4691, then carry out a POWER ON (switch-off/switch-on) for the affected component.
Which component has triggered A01840?
The alarm value in r2124, interpreted as a decimal number, gives the component number from the target topology; the message value also carries the component number.
Does A01840 need to be acknowledged?
No. The alarm requires no acknowledgement; it is dealt with by re-downloading the data and switching the component off and on (POWER 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