Parameterizing The Qm/Qb Load Display - Honeywell EK280 Applications Manual

EK280

4.8 Parameterizing the Qm/Qb load display

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Setting of the source for the load display (Qm/Qb) is only possible from software version 2.20 of
the EK280.
The operational and standard loading is normally obtained from the input information (encoder or LF pulses)
from input 1. Consequently it cannot follow rapid load changes in time.
The output of the loading in the form of an HF signal via output 2 / 3 (for conversion into a proportional
current signal) is therefore supplied after a delay. To ensure that the indicated load can follow such changes
in a timely manner, another input may be chosen as a source for the load indication. A suitable input would
be input 2 which should be connected to the HF signal of the gas meter (A1S or A1R).
It is particular suitable for use in the combination with an encoder on input 1, whereas the display of the
operational and standard loading takes place via the HF transmitter on input 2. As a result, the HF output of
the EK280 can respond more quickly to input fluctuations.
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An external power supply for the EK280 is essential for this purpose, as is the provision of HF
pulses by the gas meter (A1S/A1R).
Since no calibration values are involved, the settings for the required values can be implemented without
opening the calibration lock.
a) Setting the load source
− Move the cursor in tab
− Press the ENTER key. ⇒ The actual parameterized value flashes.
− Repeatedly press one of the arrow keys  or  until the text
− Press the ENTER key to confirm the set value. It is possible to abort the entry by pressing the ESC
key.
b) Setting the high frequency pulse generator's input mode:
− Press the key  until "Md.I2" is displayed.
Press the ENTER key. ⇒ The set value flashes.
−
− Repeatedly press one of the  or  arrow keys until the text
− Press the ENTER key to confirm the value setting. Input can be canceled using the ESC key.
c) Setting the high frequency pulse generator's cp value:
− Press the key  until "cp.I2" is displayed.
− Press the ENTER key. ⇒ The set value flashes.
− Move the cursor with the  or  arrow keys to the digits and update them with the  or  arrow
keys to the cp value of the pulse generator connected to input 2.
− Press the ENTER key to confirm the value setting. Input can be canceled using the ESC key.
Application Manual
"Serv." to "Volume" > "Actual volume" > "Parameter settings " > "Sc.Qm"
"Input 2" flashes.
"HF pulses" flashes.
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