Siemens CU240S DP Operations Instructions download pdf (Page 93)

Service and maintenance

4.2 Faults and Alarms

Control Units CU240S

Operating Instructions (Compact), 04/2006, A5E00766042B AA

4-3

4.2 Faults and Alarms

Faults

In the event of a failure, the inverter switches off and the red LED "SF" will be on. The fault

code will be displayed via OP, STARTER or Communication interface (if fitted, resp.

connected).

Note

To reset the fault code, one of three methods listed below can be used:

1. Cycle the power to the inverter.

2. Press the Fn button on the OP

3. Use digital input 2 (default setting).

Fault messages are stored in parameter r0947 under their code number (e.g. F0003 = 3).

The associated error value is found in parameter r0949. The value 0 is entered if a fault has

no error value. It is possible to read out the point in time that a fault occurred (r0948) and the

number of fault messages (P0952) stored in parameter r0947.

A detailed description of the fault messages is provided in the Parameter List.

The fault state indication by LED is shown in the following sections.

Alarm messages

The alarm code will be displayed via OP, STARTER or Communication interface (if fitted,

resp. connected). Alarm messages are stored in parameter r2110 under their code number

(e.g. A0503 = 503) and can be read out from there. A detailed description of the alarm

messages is provided in the Parameter List.

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Siemens CU240S DP Operations Instructions Page 93