What it means
A02100 is raised when the computing dead time of the current controller is set too short: the value in p0118 produces a dead time of one clock cycle because it lies prior to setpoint availability. The alarm value (r2134, floating point) tells you the minimum value for p0118 at which the dead time no longer occurs. The manuals describe the alarm identically for the G130, G150, S120 and S150, so one correction procedure covers all of them.
Why it appears
- A parameter backup with a version higher than 4.3 was loaded to a version less than or equal to 4.3.
- After a component was replaced, the system properties no longer match the parameter assignment.
What to check
- Read the alarm value in r2134 (floating point): it is the minimum value for p0118 at which the dead time no longer occurs.
- Set p0118 to zero.
- Alternatively, set p0118 to a value greater than or equal to the alarm value — this applies for p1810.11 = 1.
- Alternatively, set p0117 (from the device) to the automatic setting, p0117 = 1.
- Check the firmware versions of the components involved.
Reading the message value
- Alarm value (r2134, floating point): the minimum value for p0118 at which the dead time no longer occurs.
Parameters the manual names
- p0118 (Current controller computing dead time): the parameter whose value triggers this alarm — set it to zero or to a value greater than or equal to the alarm value in r2134.
- r2134 (Alarm value for float values): read here the minimum value for p0118 at which the dead time no longer occurs.
- p0117 (Current controller computing dead time mode): set it from the device to the automatic setting (p0117 = 1).
- p1810 (Modulator configuration): the alarm-value-based remedy for p0118 applies when p1810.11 = 1.
Acknowledging and restarting
The alarm requires no acknowledgement and does not trigger any drive reaction. It disappears once the dead time situation is corrected: p0118 set to zero, p0118 at least at the alarm value from r2134 (for p1810.11 = 1), or p0117 = 1 (automatic setting from the device).
The same on every family
Every manual that describes A02100 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| G130, G150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS G130, G150 List Manual · p. 1509 |
| S120, S150 | NONE | NONE | Error in the parameterization / configuration / commissioning procedure (18) | None | SINAMICS S120, S150 List Manual · p. 2735 |
The drives this code lives on
A02100 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 alarm A02100 mean on a SINAMICS drive?
The computing dead time of the current controller set in p0118 is too short: the value produces a dead time of one clock cycle because it lies prior to setpoint availability.
How do I clear A02100?
Set p0118 to zero, or — when p1810.11 = 1 — to a value greater than or equal to the alarm value in r2134, or set p0117 = 1 for the automatic setting from the device. No acknowledgement is needed.
Why did A02100 appear after loading a parameter backup or replacing a component?
Loading a backup with a version higher than 4.3 into a version less than or equal to 4.3 can trigger it, and so can a component replacement after which the system properties no longer match the parameter assignment.
Where do I find the minimum allowed value for p0118?
In r2134, which holds the alarm value as a floating-point number: it is the minimum value for p0118 at which the dead time no longer occurs.
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 A02xxx group · SINAMICS manuals · Siemens manuals