Flexim FLUXUS F704**-A2 Series, User Manual

Page: 156 / 192

FLUXUS F70x 18 Outputs
156 UMFLUXUS_F7V4-6-2EN, 2017-10-01
18.4.2 Activation of the Output
18.5 Activation of a Binary Output as a Pulse Output
A pulse output is an integrating output which emits a pulse when the volume or the mass of the medium which has passed
the measuring point reaches a given value (
Pulse Value
). The integrated quantity is the selected physical quantity. Inte-
gration is restarted as soon as a pulse is emitted.
The max. flow that the pulse output can work with will be displayed now. This value is calculated on the basis of the en-
tered pulse value and pulse width.
If the flow exceeds this value, the pulse output will not function properly. In this case, the pulse value and the pulse width
have to be adapted to the flow conditions.Press ENTER.
Select in the scroll list the measuring channel to be assigned to the output as the source
channel. Press ENTER.
Select in the scroll list
Measuring value
(but not
Impuls
!). Press ENTER.
If
Measuring value
has been selected and the source item can be totalized, a request
will be indicated whether the frequency output is to be configured as a pulse output. Select
yes
. Press ENTER.
Enter the upper limit of the frequency. Press ENTER.
The lower limit of the frequency and the error value will be set automatically to 0.5 Hz.
In the program branch
Output Options
, select the channel for which the input is to be
activated. Press ENTER.
This display will not be indicated if the transmitter has only one measuring channel.
Select
yes
to activate the output. Press ENTER.
Enter the number of pulses that is to be assigned to the unit of measurement of the totaliz-
er. Press ENTER.
Example: 1000 pulses correspond to 1 m³ of the totalized medium.
The max. flow depending on the upper limit of the frequency and pulse value is indicated.
Press ENTER.
Note! The menu item
Pulse Output
will only be indicated in the program branch
Output Options
if a
pulse output has been installed.
Select in the program branch
Output Options
the channel for which a pulse output is be
activated. Press ENTER.
This display will not be indicated if the transmitter has only one measuring channel.
Select
yes
to activate the output. Press ENTER.
This error message will be displayed if the flow velocity has been selected as the physical
quantity.
The use of the pulse output is not possible in this case because integrating the flow velocity
does not result in a reasonable value.
Enter the pulse value. The unit of measurement will be displayed according to the current
physical quantity.
When the totalized physical quantity reaches the pulse value, a pulse will be emitted.
Enter the pulse width.
The range of possible pulse widths depends on the specification of the measuring instru-
ment (e.g., counter, PLC) that is to be connected to the output.
F1 Source chan. ↕
Channel A:
F1 Source item ↕
Measuring value
Setup as pulse ?
no
>YES<
F1 Output MAX
1.0
kHz
Output Options ↕
for Channel A:
Frequency Output
F1: no
>YES<
Pulses per unit:
1000
/m3
INFO: max flow=
3600.0
m3/h
Output Options ↕
for Channel A:
Pulse Output
B1: no
>YES<
Pulse Output
NO COUNTING
!
Pulse Value
0.01 m3
Pulse Width
100 ms