A01485 — Topology: Controller Extension not connected

A01485 ("Topology: Controller Extension not connected") is raised by the topology comparison: the drive expects a Control Extension (CX32) in the target topology — the project as configured — but does not find it in the actual topology, i.e. in the hardware as it is really connected. The message text names the component concerned and the connection to which it is expected. The alarm value stored in r2124 identifies the component class, component number and connection involved, so the missing component can be located before any hardware is touched.

• The target topology (the project) and the actual topology (the connected hardware) do not match: the topology comparison has detected a Control Extension (CX32) that is present in the target but missing in the actual topology.
• The cause lies either on the hardware side — the CX32 is not inserted, or not inserted at the connection the project expects — or on the project side, where the parameterization in the commissioning tool does not correspond to what is actually connected.

1. Read the alarm value in r2124 and interpret it in hexadecimal (ddccbbaa): it names the connection number, the component number, the component class and the component number of the component that has not been inserted; component class and connection number are described in F01375.
2. Where relevant, use "Topology --> Topology view" in the commissioning tool — it offers improved diagnostics capability (e.g. setpoint/actual value comparison).
3. Adapt the topologies: insert the components involved at the right connection (this corrects the actual topology).
4. Alternatively, adapt the project/parameterization in the commissioning tool (this corrects the target topology).
5. Check the 24 V supply voltage.
6. Check the DRIVE-CLiQ cables for interruption and contact problems.
7. Check that the component is working properly.

• Message text: Component: %1, to %2, %3, connection: %4
• Alarm value (r2124, interpret hexadecimal): ddccbbaa hex
• dd = connection number (%4)
• cc = component number (%3)
• bb = component class (%2)
• aa = component number of the component that has not been inserted (%1)
• The component is described in dd, cc and bb, where the component has not been inserted; component class and connection number are described in F01375.

• r2124 — alarm value: read it in hexadecimal as ddccbbaa for this alarm; it gives the connection number (dd), the component number (cc), the component class (bb) and the component number of the component that has not been inserted (aa).

No acknowledgement is required. The alarm clears itself once the actual and target topology match again — i.e. after the Control Extension has been inserted at the right connection or the project/parameterization has been corrected. The drive does not trip on this alarm, so no restart step is needed beyond eliminating the discrepancy.