FAA-27, Technical Manual, Rev. 1.1, June 2014
Page 4 of 21
3. Front View, Features and Specifications
Microcontroller based analog load cell transmitter FT-27 has very high accuracy and
long term stability with its high tech design. Its high performance electronic calibration
via RS232C serial port without any test weight and fast calibration without measuring
output signal give big advantage to the users for calibration scales.
This high tech instrument gives the system designers a lot of advantages to increase
the system reliability and to reduce the installation and service times. Besides the
traditional analog output adjustment with any test weight, the electronic calibration
eCal and fast calibration with 20% max. test load reduces the calibration time.
All analog outputs of instruments are matched in the production to perform calibration
at PLC and for changing the instrument without recalibration in service.
There are 8 positioned rotary switches and annunciator LEDs in front of the
instrument. The front view and pin descriptions of FT-27 is shown below.
Pin
Name
Definition
LOAD CELL CONNECTION
- Ex
- Excitation
+ Ex
+ Excitation
- Si
- Signal
+ Si
+ Signal
ANALOGUE OUTPUT
I
Current output
V
Voltage output
G
GND
Shield and Protective ground
SERIAL CONNECTION
TX
TxD ( RS232C )
RX
RxD ( RS232C )
G
Ground ( RS232C )
SETPOINT CONNECTION
O1
Digital Output 1
O2
Digital Output 2
Com
Digital Outputs Common
POWER SUPPLY
24V
+24VDC
0V
0VDC
FAA-27
