What it means
F07824 is raised when the freely parameterizable I2t monitoring exceeds its fault threshold, which is fixed at 100 %. This monitoring continuously integrates a thermal utilization value taken from the signal source configured in p3240; when the integrator reaches the fault threshold, the drive raises the fault. While the threshold is exceeded, status bit r2199.14 = 1, and the current integrator value can be read at any time in r3244.
Why it appears
- The fault threshold (100 %) of the freely parameterizable I2t monitoring was exceeded, i.e. the I2t integrator (r3244) has run up to its limit.
- Because the monitoring is freely parameterizable, how quickly the threshold is reached depends on the received input value (p3240) and on the monitoring settings p3241, p3242 and p3243.
What to check
- Check the input value the monitoring receives; the signal source is set in p3240.
- If required, reduce the load.
- Check the parameterization of the monitoring: p3241 (Permissible I2t continuous value), p3242 (I2t maximum duration) and p3243 (I2t alarm threshold). While doing this, r3244 (Actual I2t integrator value) lets you follow how the integrator value behaves.
Parameters the manual names
- p3240 (CI: I2t input value signal source) — sets where the I2t monitoring takes its input value from; the first remedy step for this fault is to check the value received here.
- p3241 (Permissible I2t continuous value) — sets the permissible continuous value; check it as part of the monitoring parameterization for this fault.
- p3242 (I2t maximum duration) — sets the maximum duration; also part of the parameterization to check here.
- p3243 (I2t alarm threshold) — sets the alarm threshold; check it together with p3241 and p3242.
- r3244 (CO: Actual I2t integrator value) — displays the current I2t integrator value; the fault and status bit r2199.14 reset once it falls below 99 %.
Acknowledging and restarting
The fault is acknowledged immediately. It and status bit r2199.14 do not clear until the integrator value has dropped again: Fault and status bit r2199.14 are reset if the I2t integrator value (r3244) falls below a value of 99%.
Remove or reduce the cause first, then watch r3244 to see when the message resets.
The same on every family
Every manual that describes F07824 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE (OFF1) | IMMEDIATELY | Application/technological function faulted (17) | Control Unit (CU) | SINAMICS S120, S150 List Manual · p. 2868 |
| G130, G150 | NONE (OFF1) | IMMEDIATELY | Application/technological function faulted (17) | Control Unit (CU) | SINAMICS G130, G150 List Manual · p. 1599 |
The drives this code lives on
F07824 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 fault F07824 mean?
The freely parameterizable I2t monitoring has exceeded its fault threshold of 100 %, so the I2t integrator (visible in r3244) has reached its limit.
How do I clear fault F07824?
Check the input value received via p3240, reduce the load if required, and check the settings in p3241, p3242 and p3243. The fault and status bit r2199.14 reset automatically as soon as r3244 falls below 99 %.
Why does my drive report I2t monitoring fault threshold exceeded?
The I2t monitoring integrated its input value up to 100 %; the manual names the received input value, the load and the monitoring parameterization as the points to check.
Does F07824 reset by itself?
It is acknowledged immediately, and together with status bit r2199.14 it resets once the I2t integrator value r3244 falls below 99 %.
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 F07xxx group · SINAMICS manuals · Siemens manuals