FAA-28, Technical Manual, Rev.1.1.0
February 2022
Page 9 of 21
3.4
Changing the Analogue Output
FAA-28 sets its analog output according to the table below at power on. Turn the
programming switch and connect TxD and RxD pins as indicated in the table below
before power on the instrument to set analog output type and its signal level.
Analogue
Output Range
Prog. Switch Position
TxD & RxD pins
V / I LED
4 - 20 mA
Open circuited
On
0 - 20 mA
Short circuited
Off
0 - 10 VDC
Open circuited
Flash
0 - 5 VDC
Short circuited
Blinking
You can also set the analog output type after power on as;
•
Turn the programming switch to the analog output type (to V or I position)
•
Connect or disconnect TxD and RxD pins according the table above to set the
output range
•
Turn the adjustment switch to the
position. After 2 seconds turn in back to
the
“
0
“ - position (if the instrument is powered on before)
The analogue output type can be followed by the V/I LED on front of the instrument
after running it (refer to table above ) .
After set up the analog output of the instrument according to the table above go to
the next step.
3.5
Serial Port Connection
3.6
Commissioning
Double check the following issues before energizing the instrument.
•
Check Mechanical installation, grounding, load cell connection and power
supply connection
•
Check the analogue output set up described in
•
The analogue output cabling should be done for the same analogue output
type
•
The adjustment (Adj) rotary switch shall be at “
0
“ - position
