User manual
6 Detailed descriptions of I/O modules | Digital frequency counter module UR20-2FCNT-100
374 1432790000/08/12.2015Manual u-remote
Digital frequency counter module UR20-2FCNT-100 (Order No. 1508080000)
The digital frequency counter module UR20-2FCNT-100 can
read square-wave signals from one or two external sensors
with a maximum input frequency of 100kHz. Frequencys to
be counted are applied to channelCH0 and/or channel CH1.
The measurement will be started via control word 1 or 2
respectively in the process data. Measuring cycles can be
dened in µs via an output double word. The longer the mea-
suring cycle the more exactly the measurement.
A status LED is assigned to each channel. The module elec-
tronics supply the connected sensors with power from the
input voltage path (U
IN
).
1
2
3
4
2
1
3
4
2
4
3
1
2·F·CNT
f
in
GND
24VDC
CH 0
GND
24VDC
CH 1
f
in
Connection diagram UR20-2FCNT-100
– Two counter inputs 24VDC
– Counting frequency 100kHz max
– Digitally adjustable input filter to suppress interferences
(17filter frequencies gradually adjustable between 3Hz
and 187kHz)
If the measuring cycle time will be zero (e.g.
as an initial process value) the edge value will
remain zero and the current period duration
reaches its maximum. In this case please pro-
cede as follows:
▶ Stopp the measurement via the control
word.
▶ Start the measurement again using a valid
measuring cycle time value.
6.48 Digital frequency counter module UR20-2FCNT-100