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3.8.1 Calculation of Feedback Energy
The feedback energy for a digital output module can be calculated as follows:
P = Σ
1/2 n
* L
all channels
i
P
Feedback energy of the module
N
Switching cycles of Channel i in 1/seconds
i
E
Feedback energy when shutting off Channel i during a shutdown
i
procedure
I
Current through the load connected to Channel i
i
L
Inductance of the load connected to Channel i
i
Once the maximum permissible feedback energy E
Maximum Feedback Energy Varies with Ambient Temperature
GFK-2958E
* I
²
i
i
RSTi-EP User Manual
is reached, the module shuts down.
max
Chapter 3: Configuration
35
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