What it means
This alarm tells you that the coolant temperature of the power unit has exceeded the specified alarm threshold. The drive keeps running, but the message is an early warning: if the coolant temperature increases up to the specified fault threshold, the drive outputs fault F30087.
Why it appears
- The coolant temperature has exceeded the specified alarm threshold.
What to check
- Check the cooling system of the power unit.
- Check the ambient conditions.
Reading the message value
- The alarm value is stored in r2124 and contains the coolant temperature; interpret the value as a decimal number.
Parameters the manual names
- r2124 — alarm value: read out the coolant temperature that tripped this alarm here, interpreting the value as a decimal number.
Acknowledging and restarting
This alarm requires no acknowledgement. It is present while the coolant temperature exceeds the alarm threshold and goes away by itself once the temperature falls back below it. If the temperature instead climbs up to the fault threshold, fault F30087 is output.
The same on every family
Every manual that describes A30086 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Power electronics faulted (5) | Power Module | SINAMICS S120, S150 List Manual · p. 2969 |
The drives this code lives on
A30086 is described for S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does alarm A30086 mean on a SINAMICS S120 or S150?
The power unit reports that its coolant temperature has exceeded the specified alarm threshold. The drive takes no reaction, but fault F30087 is output if the temperature rises up to the fault threshold.
How do I clear alarm A30086?
No acknowledgement is required. Once the coolant temperature falls back below the alarm threshold, the alarm goes away by itself.
What should I check when A30086 appears?
The manual says to check the cooling system and the ambient conditions. The alarm value in r2124 shows the coolant temperature that tripped the alarm; interpret it as a decimal number.
Where can I read the coolant temperature for A30086?
In r2124, the alarm value of this alarm, interpreted as a decimal number. If the temperature reaches the fault threshold, the drive outputs fault F30087.
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 A30xxx group · SINAMICS manuals · Siemens manuals