KRAL BEM 500 Series, Руководство по эксплуатации

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Operating Instructions OIE 12en Edition 2019-02 41
Menu 3: Output settings
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3.06 Averaging analog output
In the case of fluctuating flow rates the averaging
allows a stable value at the analog output.
Averaging can be adapted to the requirements
with values between 1 and 10000. However,
rapid changes are only displayed with a time
delay.
Examples of reaction time for a change of 99.9 %
of the actual frequency jump:
No filter is active for Averaging 0 and 1. In the
case of Averaging 2–9 a continuous average-
value generation is carried out. A V
Z
1 filter is
active at Averaging 10–10000. In the process the
old measured value is weighted higher by the
averaging value than the new measured value.
3.07 Function pulse output
The two pulse outputs can be used
independently of each other. To this purpose the
setting "Independent" is selected. At the
"Encoder" setting both pulse outputs supply two
square wave signals out of phase by 90°. This
passes on the information about the flow
direction. At the "Encoder" setting the allocation
of the second pulse output and its scale remains
ineffective.
Note : After the setting has been changed, the
electronic unit has to be restarted.
The BEM 500 can be used as a Pulse selector
under the following prerequisites:
□
Function pulse inputs = Encoder
□
Function pulse outputs = Independent
□
Occurrence of changes in direction of rotation
If reverse pulses occur at the pulse inputs, no
pulses are output at the assigned pulse outputs.
Instead up to 10 reverse pulses are stored in a
reverse counter. As soon as forwards pulses are
generated again, these are deducted from the
counter level of the reverse counter until it shows
"0" again. Only then are pulses output again at
the pulse output in accordance with the scale.
3.08 Allocation pulse output 1
A total value can be assigned freely to the Pulse
output 1.
Available total values:
□
T Total consumption A-B or A+B
□
TA Total flow Volumeter A
□
TB Total flow Volumeter B
Note : After the setting has been changed, the
electronic unit has to be restarted.
3.09 Scale pulse output 1
The scale of the pulse output is used to set the
pulse significance. Since the pulse values can
also be output in packets, we also recommend
using the pulse output only for total values. If the
value "0" is entered here, the pulse output is
deactivated, so that no pulses are output.
Note : Select the scale so that the limit frequency
of 250/125 Hz is not exceeded.
Note : After the setting has been changed, the
electronic unit has to be restarted.
Averaging Reaction time
0 or 1 0.02 s
2 0.04 s
9 0.18 s
10 1.5 s
500 75 s
1000 150 s
10000 1500 s
3.06 Setting
Average analog
Average
Number values: 10
3.07 Setting
Function
Pulse output:
Encoder
3.08 Setting
Allocation
Pulse output 1:
T
3.09 Setting
Scale
Pulse output 1:
1.0 l