Application Manual CDA3000
5-75
5 Software functions
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Parameters for device capacity utilization
Example: Mean device capacity utilization
The mean device capacity utilization will be formed by way of a filter ele-
ment in the form of a PT1 element. For this, the filter constant should be
set to five times the cycle duration of the drive.
Block diagram:
Figure 5.29 Mean device capacity utilization
Parameter Function Value range FS Unit Online
380-CACMX Max. current in acceleration phase
referred to device rated current
2 x I
N
device
* %
381-CDCMX Max. current in braking phase referred to
device rated current
0 ... 300% I
N
device
* %
382-CSTMX Max. current in stationary operation
referred to device rated current
0 ... 300% I
N
device
* %
383-CFCMX Effective value of maximum current 0 ... 300% I
N
device
* A
384-CSCLR Reset peak value storage ACTIV / CLEAR ACTIV
388-CMID Mean device capacity utilization 0 ... 250 % I
N
device
100 %
389-CMIDF Filter time constant for mean device
capacity utilization
1 ... 1000 20 s
Table 5.41 Parameters from subject area _38TX Device capacity utiliza-
tion
Explanatory notes
• Parameter values which are produced from current calculations and
so are not editable have an asterisk (*) in the “Value range” column.
• Peak value storage in the entire subject area _38TX is reset by set-
ting the value 384-CSCLR = CLEAR.
• For display of the mean device capacity utilization via 388-CMID,
the filter time constant 389-CMIDF must be set to a value greater
than five times the cycle duration of the drive.
I[A]
t [s]
Mean device capacity utilization
Current within a cycle
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