RHEONIK Messgeräte GmbH
REV. I, Apr. 2004
.
Operation Manual RHE 07, 08, 11
Page
19
2.1.3.6. Digital inputs and outputs
2.1.3.6.1. Frequency output
Please select on of the following two modes:
Mode 1:
Pulse Output
If you choose
FreqOut = Pulse
the next display will show the current number of pulses per volumet-
ric or mass units. If you wish to change this output value, you can enter the number of pulses per
unit by using the
+
or - push-buttons
(1, 10, 100 .. pulses/g, kg or t).
Mode2:
Frequency Output
In this mode, it is possible to set the frequency with a flow rate, which corresponds to a frequency of
5 kHz. The numerical value of the flow rate with a corresponding frequency of 5kHz can be changed
by using the + and - keys. The complete output frequency range is 0 to 10 kHz.
The frequency output is available from an
passive opto isolated open collector driver. For wiring see
attached RHM/RHE wiring diagram.
example:
Optocoupler
DC voltage-
source
m ax. 24 VDC
resistor
User
equipm ent
Note:
The
open collector
output withstand up to 50 mA of current.
For a good signal shape and optimal high and low levels we recommend a current of approx. 10mA.
Typical supply voltages are 5 – 24 VDC.
