Analog Amplifier FAA 26 Technical Manual Flintec GmbH Bemannsbruch 9 74909 Meckesheim GERMANY www.flintec.
Table Of Contents 1. Safety Instructions ........................................................................... 2 2. Declaration of Conformity ................................................................ 3 3. Front View, Features and Specifications.......................................... 4 4. Installation and Commissioning ....................................................... 6 4.1 Mechanical Installation .................................................................. 7 4.
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2. Declaration of Conformity FAA-26, Technical Manual, Rev. 1.
3. Front View, Features and Specifications Microcontroller based analog load cell transmitter FAA-26 has very high accuracy and long term stability with its high tech design. This high accurate instrument gives the system designers a lot of advantages to increase the system reliability and to reduce the installation and service times.
Features Minimized zero and span drifts because of its microcontroller technology and high accurate, very low temperature drift 24 bits ADC and 16 bits DAC converters. Long time stability and low temperature drifts eliminates the frequent readjustment period. Digital adaptive anti-vibration filters to minimize environmental vibrations. Very easy and user friendly digital adjustment via rotary switches located on the front of the instrument.
4. Installation and Commissionıng Recommendations Warning: Please care the following warnings for designing the control cabinet which will increase your system reliability. The control cabinet should be designed so that the instrument can operate safely. The panel should be placed in clean area, not getting direct sun light if possible, with a temperature between -10 ºC and +40 ºC, humidity not exceeding 85% noncondensing. All external cables should be installed safely to avoid mechanical damages.
4.1 Mechanical Installation The place where you will use/install your instrument should be clean, if possible not getting direct sunlight, with a temperature between -10ºC and +40ºC, 85% maximum relative humidity non-condensing. Install the instrument on the DIN rail in the cabinet. The instrument mechanical drawing FAA-26, Technical Manual, Rev. 1.
4.2 Load Cell Connection The load cell wiring should be made carefully before energizing to avoid damages to the instrument and load cells. The input resistance of the load cells that you want to connect should be more than 85 Ω. Pin Name +Ex -Ex +Si -Si Load Cell Cable + Excitation - Excitation + Signal - Signal Shield 4.3 Analogue Output Connection Only one of the analog output types can be used at the same time and has to be selected in the setup.
4.4 Changing the Analogue Output Type FAA-26 checks the T and R pins connection and sets its analog output according to the table below at power on. To change the analog output mode short circuit or open circuit T and R pins of the instrument before power on the instrument. Analogue Output Type T and R pins V/I LED Current output Open circuited On Voltage output Short circuited Flash After setting your analog output type go to the next step. 4.
5. Adjustments 5.1 Adjustment with rotary switch Zero and Gain adjustment rotary switches are used to adjust zero and gain of the analog output. Both switches must be at “0“ positions when the adjustment starts. Adjustment is done by turning the adjustment switch as described in the table below.
The analog output value at any loading is Analog Output = Minimum output + Example: Scale capacity Output range Load Maximum output – Minimum output Scale capacity * Load 100kg 4 – 20 mA 25kg The 4-20mA analog output current will be ; I out = 4mA + (( 20mA – 4mA ) / 100kg ) * 25kg = 4 + 0.16 * 25 = I out = 8 mA The 0 – 10 VDC analog output voltage will be: V out = 0 + (10V / 100kg ) * 25 kg = 0,1 * 25 = V out = 2.
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 Refer to chapter 8 in case of the Err LED turns on.
7. Trouble Shooting The type FAA-26 amplifier has been designed as a very reliable and virtually error free instrument. However, if an error occurs, do not attempt to repair the equipment before you understand what caused the error. Note the status of the front panel LEDs and try to find the problem with the help of the table given below. Don’t let unauthorized people interfere with the instrument.
