
Glossary
ET 200pro FC
Operating Instructions, 11/2007, A5E01100763B AA
185
Range of values
The range of values specified by the data type is limited by the minimum and maximum
value (min., max.) and by the variables associated with the frequency converter/motor. Quick
commissioning is dependent upon the parameters being set to default values. These values
(min., max., def.) are permanently stored in the frequency converter and cannot be changed
by the user.
Table 12-20 Range of values of parameter attributes
Range of values Description
- No value entered (e.g. "r-parameter")
Min Minimum value
Max Maximum value
Def Default value
Data sets
You will find a more detailed description of the data sets in the corresponding section.
Table 12-21 Changeable parameter attributes
BICO Description
CDS Command data set
DDS Drive data set
Potential groups
A potential group contains a power module and all modules located to the right of it as far as
an ET 200pro terminating module or the next power module.
Note
Frequency converters and motor starters can be operated together in the same potential
group.
Switch-off signal paths
The fail-safe frequency converter has two separate switch-off signal paths for the power
electronics. All switch-off signal paths are low active, thereby ensuring that the system is
always switched to a safe state if a component fails or in the event of an open circuit. If a
fault is detected on the switch-off signal paths, the frequency converter is passivated. In this
case, passivation cannot simply be acknowledged.
Two-channel monitoring structure
All the main safety-related hardware and software functions are implemented in two
independent monitoring channels (e.g., switch-off signal paths, data management, data
comparison).
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