IFM Electronic CR0403 - Configure Outputs; Valid Operating Modes → Chapter; Possible Operating Modes Inputs;Outputs

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ifm Programming Manual ecomatmobile BasicController (CR0403) Runtime System V03.02 2015-04-01
Configurations Function configuration of the inputs and outputs
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4.4.2 Configure outputs
Configure the software filters of the outputs ........................................................................................ 53
Binary outputs: configuration and diagnosis ....................................................................................... 54
PWM outputs ....................................................................................................................................... 55
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Valid operating modes → chapter Possible operating modes inputs/outputs (→ page 207)
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Configure the software filters of the outputs
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Via the input FILTER in the FB OUTPUT (→ page 180) a software filter can be configured which filters
the measured output current at the PWM outputs.
The FILTER byte is only valid for outputs with current measurement.
For outputs without current measurement: set FILTER = 0!
The current at the output is averaged over a PWM period.
If dithering is set, the current is averaged over the dither period.
The filter behaves like a low-pass filter; the limit frequency is set by the value entered in FILTER. For
FILTER, values from 0...8 are permitted.
Table: limit frequency software low-pass filter on PWM output
FILTER Filter frequency [Hz]
Step response [ms] for ...
Remarks
0…90 % 0…95 % 0…99 %
0 Filter deactivated
outputs without current
measurement
1 600 0.8 1.0 1.4
2 233 1.8 2.2 3.4
3 109 3.6 4.6 7.0
4 52 7.2 9.4 14.4
recommended
5 26 14.6 19.0 29.2
6 13 29.4 38.2 58.6
7 6 58.8 76.4 117.6
8 4 117.8 153.2 235.4
The following statements of the step response are relevant:
• Output current: 0...90 % and 0...99 %
Figure: time sequence binary current signal on output upon switch-on / switch-off