Which products are affected?
9300ES servo controllers <= V6.2
9300EK cam profilers <= V7.1
9300EP position controllers <= V8.0
What happens?
The initialization phase is not finished. The drive controller does not reach the status 'ready for operation'.
When does the problem occur?
When an absolute value encoder and a resolver are used simultaneously. The absolute value encoder is untypically configured as motor encoder (C0495) and the resolver for the position (C0490).
And the problem only occurs, when the absolute value encoder is actually connected to X8.
Possible diagnostics?
After a certain period of time the drive does not show the status 'ready for operation' (RDY).
Short-term measures/recommendations?
When resolver and absolute value encoder are used simultaneously, configure the resolver as the motor encoder (in practical life it is always like this).
If it happened already:
When the initialization is not finished the codes cannot be accessed, so that the undesired configuration cannot be modified, as well.
In this case the absolute value encoder is to be eliminated from X8 and another mains switching is required. Now the initialization is executed correctly and the status 'RDY' is reached, so that the configuration can be modified again.
Evaluation:
The above-mentioned encoder configuration is 'academic' and will not happen in practical life. Consequently, the resulting behaviour is no problem for applications in the field so that no urgent measures are to be taken.
This statement is confirmed by fact that this behaviour, existing in all versions, has not occurred until now.
