FAA-26, Technical Manual, Rev. 1.2.0, December 2020
Page
13
of
14
6. Operation
There are 3 LEDs and 2 adjustment rotary switches on the front panel of FAA-26.
The rotary switches should be at
“
0
“ positions for operation.
In operation rotary switch positions, T and R pins connection, and LEDs
announces are:
Analogue
Output Type
Gain Adj.
Sw. position
Zero Adj.
Sw. position
T and R pins
V/I LED
( after power
on )
Current
Open
circuited
On
Voltage
Short
circuited
Flash
in case of the Err LED turns on.
The analogue output signal also gives information about the status of the system and
the weighing process to inform PLC as:
Condition
Current
output
Voltage
output
Operation
X
X
Programming
X
X
The weight is higher than the range
(Over signal to PLC)
24 mA
11 V
The weight is under than the zero range
(Under signal to PLC)
0 mA
-4.0 V
“Error” signal to PLC
0 mA
0 V
“ADC is out of operating range” error to PLC
24 mA
11 V
