AddFEM
Mode of Operation
3-5
AddFEM
C79000–G8076–C900–03
Signal Filters for Analog Inputs
The analog input signals can be filtered digitally. There are mains filters for 50 Hz,
60 Hz and 16
2/3
Hz. The parameter telegram is used to set the filtering for every
analog input individually (channel–specifically). The following can be set:
– No filtering
– 50 Hz
– 60 Hz
– 16
2/3
Hz
The default setting is “de–activated”, meaning that filtering does not take place.
3.1.3 Operating principle of the 2–channel speed detection with
sense of rotation recognition
As from Version 8 of 6DL3100–8AA or Version 7 of 6DL3100–8AB/–8AC Channel
1 and 2 can be used for counting frequency detection with sense of rotation reco-
gnition. A suitable (2–channel) sensor has to be connected to Channels 1 and 2 to
this purpose. The leading signal is connected to Channel 1 and the lagging signal
to Channel 2.
Channel 3 can be used independently as a single channel (meaning without sense
of rotation recognition).
Displaying of the (signed) frequency detected on 2 channels is carried out on the
two Channels 1 and 2 as follows:
The value of the displayed frequency is calculated for each channel individually
directly from the pulses of the connected sensor. The sign (for the sense of rota-
tion) is determined from the phase offset of the two channels and assigned to the
two channels.
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