Type FAA-25 Analogue Amplifier
TECHNICAL MANUAL
Flintec GmbH
Bemannsbruch 9
DE 74909 Meckesheim
GERMANY
www.flintec.com
Table of Contents:
1. |
Features .......................................................................................................................................................... |
3 |
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1.1. |
Technical Specification........................................................................................................................... |
3 |
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1.2. |
Housing Dimensions .............................................................................................................................. |
3 |
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1.3. |
Model Identification ........................................................................ |
Fehler! Textmarke nicht definiert. |
2. |
Installation and Commissioning ...................................................................................................................... |
4 |
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2.1. |
Mechanical Installation........................................................................................................................... |
4 |
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2.2. |
Electrical Connections............................................................................................................................ |
4 |
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2.3. |
Load Cell Connection............................................................................................................................. |
5 |
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2.4. |
Analogue Output Connection ................................................................................................................. |
5 |
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2.5. |
Optional Digital Inputs / Outputs ............................................................................................................ |
5 |
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2.6. |
Optional RS232C Serial Interface .......................................................................................................... |
5 |
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2.7. |
Commissioning....................................................................................................................................... |
5 |
3. |
Operation ........................................................................................................................................................ |
6 |
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4. |
Setup and Calibration by using the Key Buttons ............................................................................................ |
6 |
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4.1. |
Setup of the Analogue Output Mode...................................................................................................... |
6 |
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4.2. |
Setup and Calibration............................................................................................................................. |
6 |
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4.2.1. Entering Setup & Calibration ............................................................................................................................. |
7 |
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4.2.2. |
Setup & Calibration ........................................................................................................................................... |
7 |
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4.2.3. Exit from Setup & Calibration ............................................................................................................................ |
7 |
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5. |
Setup and Calibration via Serial Interface ...................................................................................................... |
8 |
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6. |
Troubleshooting .............................................................................................................................................. |
8 |
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7. |
Declaration of Conformity ............................................................................................................................... |
9 |
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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 |
Page 2 of 10 |
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
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Linearity |
0.01 % or better |
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Analogue input range |
0 mV to 20 mV |
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Min. input range |
< 1 mV |
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A/D converter |
24 bit Delta-Sigma ratiometric with integral analog and digital filters |
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Resolution |
Min. 0.1 μV/d |
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Internal resolution |
Min. 8 million counts |
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Conversion rate |
Up to 100 measurement values per second |
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SCALE CALIBRATION & ANALOGUE OUTPUT |
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Calibration |
Performed with keys. There is no switch or resistor for adjustment in the instrument; |
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alternatively by PC-software (option board required) |
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Digital filter |
2 step adjustable digital adaptive filter |
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Weighing functions |
Zeroing via opto-isolated digital input (option board required); |
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max. zeroing range is 30% of weighing range |
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D/A converter |
16 bit |
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Analogue output |
Current output 4-20 mA (at max. 500 load) or |
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voltage output 0-10 V (at min. 10 k load) |
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Set points |
2 programmable free setpoints (option board required) |
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LOAD CELLS |
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Excitation |
5 V DC |
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Number of load cells |
Up to 4 units of 350 or 12 units of 1100 (min. 85 ) |
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Connection |
4 or 6 wire technique. Cable length 274 m/mm² for 6 wire connection |
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SETUP & COMMUNICATION |
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Front panel |
Membrane keypad including 2x LED and 3x programming keys |
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eCal |
Electronic calibration without test weights using PC software (option board required) |
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POWER |
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Power supply |
24 V DC (18…30 V DC), 200 mA |
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ENVIRONMENT AND ENCLOSURE |
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Operation temperature |
Between -10 °C and +40 °C at 85% RH max, non-condensing |
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Enclosure |
Polyamide, for DIN-rail mount, IP20 |
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OPTION |
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Interface option |
2 opto-isolated outputs for 2 setpoints, 1 opto-isolated error output, 1 opto-isolated input for |
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zeroing and 1 RS232C serial interface |
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Characteristics of digital |
NPN open collector; 18…30 V DC, max. 50 mA |
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outputs |
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1.2. Housing Dimensions
FAA-25 Technical Manual, Rev. 2.08 January 2012 |
Page 3 of 10 |
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