Flintec FAA-25 Manual de usuario descargar pdf (Pagina 3)

FAA-25 Technical Manual, Rev. 2.08 January 2012

Page 3 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

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

Performed with keys. There is no switch or resistor for adjustment in the instrument;

alternatively by PC-software (option board required)

Digital filter 2 step adjustable digital adaptive filter

Weighing functions

Zeroing via opto-isolated digital input (option board required);

max. zeroing range is 30% of weighing range

D/A converter 16 bit

Analogue output

Current output 4-20 mA (at max. 500  load) or

voltage output 0-10 V (at min. 10 k load)

Set points 2 programmable free setpoints (option board required)

LOAD CELLS

Excitation 5 V DC

Number of load cells

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

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

2 opto-isolated outputs for 2 setpoints, 1 opto-isolated error output, 1 opto-isolated input for

zeroing and 1 RS232C serial interface

Characteristics of digital

outputs

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

1.2. Housing Dimensions

1 2 3 4 5 6 7 8 9 10

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Flintec FAA-25 Manual de usuario Pagina 3

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