Flintec FAA-25 User Manual

Type FAA-25 Analogue Amplifier

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Flintec GmbH
Bemannsbruch 9
DE 74909 Meckesheim
GERMANY

www.flintec.com

Table of Contents:

1. Features .......................................................................................................................................................... 3

1.1. Technical Specification ........................................................................................................................... 3

1.2. Housing Dimensions .............................................................................................................................. 3

1.3. Model Identification ........................................................................ Fehler! Textmarke nicht definiert.

2. Installation and Commissioning ...................................................................................................................... 4

2.1. Mechanical Installation ........................................................................................................................... 4

2.2. Electrical Connections ............................................................................................................................ 4

2.3. Load Cell Connection ............................................................................................................................. 5

2.4. Analogue Output Connection ................................................................................................................. 5

2.5. Optional Digital Inputs / Outputs ............................................................................................................ 5

2.6. Optional RS232C Serial Interface .......................................................................................................... 5

2.7. Commissioning ....................................................................................................................................... 5

3. Operation ........................................................................................................................................................ 6

4. Setup and Calibration by using the Key Buttons ............................................................................................ 6

4.1. Setup of the Analogue Output Mode ...................................................................................................... 6

4.2. Setup and Calibration ............................................................................................................................. 6

4.2.1. Entering Setup & Calibration ............................................................................................................................. 7

4.2.2. Setup & Calibration ........................................................................................................................................... 7

4.2.3. Exit from Setup & Calibration ............................................................................................................................ 7

5. Setup and Calibration via Serial Interface ...................................................................................................... 8

6. Troubleshooting .............................................................................................................................................. 8

7. Declaration of Conformity ............................................................................................................................... 9

PRECAUTIONS

 DONT LET UNAUTHORIZED PEOPLE INTERFERE WITH THE INSTRUMENT.

 CHECK THE SUPPLY VOLTAGE, THE LOAD CELL AND ESPECIALLY THE

GROUND CONNECTIONS BEFORE ENERGISING FAA-25.

 DON’T ENERGISE FAA-25 BEFORE MAKING THE LOAD CELL CONNECTION.

 DON’T CONNECT / DISCONNECT THE CABLES AND/OR CONNECTORS WHILE

FAA-25 IS ENERGISED.

 DO NOT OPEN THE ENCLOSURE WHILE FAA-25 IS CONNECTED TO THE

POWER SUPPLY.

WARNING !

The Error LED can be active before calibration. Do not care the error status before
performing the calibration of your weighing system.

FAA-25 Technical Manual, Rev. 2.08 January 2012

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1. Features

The amplifier type FAA-25 is an accurate and economic load cell transmitter, easy to integrate into process
controll systems. By its “digital heart” – modern microcontroller technology – type FAA-25 allows a comfortable
calibration and setup with a combination of LED’s and push buttons.
The analogue signal output is programmable to 0 – 10 V and 4 – 20 mA.
An opto-isolated interface option offers two setpoints, one error output, one input for zeroing by external
command and one RS232C serial interface for setup and electronic calibration (PC software “xFace”).

1.1. Technical Specification

INPUT & A/D CONVERTER
Linearity 0.01 % or better
Analogue input range 0 mV to 20 mV
Min. input range < 1 mV
A/D converter 24 bit Delta-Sigma ratiometric with integral analog and digital filters
Resolution Min. 0.1 μV/d
Internal resolution Min. 8 million counts
Conversion rate Up to 100 measurement values per second
SCALE CALIBRATION & ANALOGUE OUTPUT

Calibration

Digital filter 2 step adjustable digital adaptive filter

Weighing functions

D/A converter 16 bit

Analogue output

Set points 2 programmable free setpoints (option board required)
LOAD CELLS
Excitation 5 V DC
Number of load cells

Connection 4 or 6 wire technique. Cable length 274 m/mm² for 6 wire connection
SETUP & COMMUNICATION
Front panel Membrane keypad including 2x LED and 3x programming keys

eCal Electronic calibration without test weights using PC software (option board required)
POWER
Power supply 24 V DC (18…30 V DC), 200 mA
ENVIRONMENT AND ENCLOSURE
Operation temperature Between -10 °C and +40 °C at 85% RH max, non-condensing
Enclosure Polyamide, for DIN-rail mount, IP20
OPTION

Interface option

Characteristics of digital
outputs

Performed with keys. There is no switch or resistor for adjustment in the instrument;
alternatively by PC-software (option board required)

Zeroing via opto-isolated digital input (option board required);
max. zeroing range is 30% of weighing range

Current output 4-20 mA (at max. 500  load) or
voltage output 0-10 V (at min. 10 k load)

Up to 4 units of 350  or 12 units of 1100  (min. 85 )

2 opto-isolated outputs for 2 setpoints, 1 opto-isolated error output, 1 opto-isolated input for
zeroing and 1 RS232C serial interface

NPN open collector; 18…30 V DC, max. 50 mA

1.2. Housing Dimensions

FAA-25 Technical Manual, Rev. 2.08 January 2012

Page 3 of 10