FLINTEC FAD-4 ANALOGUE LOADCELL JUNCTION BOX WITH TRANSDUCERS ELECTRONICS REFERENCE MANUAL Flintec GmbH Bemannsbruch 9 74909 Meckesheim Germany Tel. +49 6226 92400 Fax. +49 6226 924099 www.flintec.net germany@flintec.net Document FAD - 4 DIGITAL LOADCELL JUNCTION BOX Date Code Rev. Page 02.05.
FLINTEC TABLE OF CONTENTS 1 2 3 4 5 6 7 8 INTRODUCTION ........................................................................................................................................... 3 HARDWARE DESCRIPTION – INSTALLATION ...................................................................................... 4 2.1 Mounting .................................................................................................................................................. 4 2.2 Wiring ...............
FLINTEC 1 INTRODUCTION The FAD-4 is a junction board for connection of up to 4 analogue loadcells. It contains all transducer electronics to excite the strain gauges, amplify, filter and convert the analogue signal of each loadcell to a digital form. The outputs from each loadcell are corner corrected and summed to form the scale weight output. If one loadcell is connected only it should be connected to LC.1 input, two loadcells to inputs 1 and 2 etc.
FLINTEC 2 HARDWARE DESCRIPTION – INSTALLATION Normally FAD-4 comes in a sealed stainless steel enclosure, suitable for wash down environment. Entry of connecting cable is through sealed cable glands. Refer to Annex A for details of the enclosure and main PCB 703.2. In addition an analogue output (PCB 760) and a tilt switch may be connected. 2.1 Mounting The mounting location should be such that the unit is not subject to excessive vibrations or heat. The top panel should be accessible. 2.
FLINTEC 3 FUNCTIONAL DESCRIPTION All FAD-4 operations are performed via the serial interface, through the use of LESIP Master/Slave serial interface protocol . The communication standards and timing are described in the LESIP manual. The file types specific to FAD-4 will be described here. The FAD-4 is always a slave. In principle a number of FAD`s may be connected in a network microprocessor controlled device. The communication buffer size is 13 bytes max for Transmitter and Receiver (Half duplex).
FLINTEC FILE TYPE DESCRIPTION Calibration and weight parameters are protected by calibration lock devices hardware and software. If the CALIBRATION LOCK is activated, weight parameter/ calibration file types are not accessible. The “CAL LOCK” is a hardware jumper inside the DJB required by Weights & Measures authorities so that calibration can be sealed (jumper inserted). The “PINLOCK” is a software Personal Identification Number, which ensures that no accidental scale calibration is attempted.
FLINTEC EXAMPLE: For a 0,1234 mV/V loadcell deadload output the data downloaded must be 001234. Master transmission : STX A A 001234 0 0 ETX Master transmission: STX A ? = 3 ETX Slave response: STX A ? E WAIT.. 2 3 ETX a. DEADLOAD CALIBRATION (WEIGHT) When this command is received the FAD-4 will measure the weight of the empty scale by averaging 32 conversions. This DEADLOAD average will be held in the ZERO CALIBRATION memory. Master transmission: STX ADD a BCS2 BCS1 ETX Poll the slave by using command ‘?’.
FLINTEC Poll the slave by using command ‘?’. Possible response messages: “ERR 91” or “CORN.3” Master transmission: STX ADD C 3 yyyyyy BCS2 BCS1 ETX yyyyyy : 6 digits (ASCII decimal) of rated mV/V multiplied by 10000 for CORNER 3. Poll the slave by using command ‘?’. Possible response messages: “ERR 91” or “CORN.4” Master transmission: STX ADD C 4 yyyyyy BCS2 BCS1 ETX yyyyyy : 6 digits (ASCII decimal) of rated mV/V multiplied by 10000 for CORNER 4. Poll the slave with command ‘?’.
FLINTEC d. UPLOAD CALIBRATION SECURITY PARAMETERS The command is used by the master to upload the current status of the hardware CAL LOCK jumper, the software PIN LOCK state and the contents of the Audit Trail counter.
FLINTEC Master transmission: STX ADD J 1 xxxxxx BCS2 BCS1 ETX xxxxxx = 6digit PIN Slave response: STX ADD J 1 xxxxxx BCS2 BCS1 ETX or NAK block if already locked. THE VALUE IS NOT SAVED IN EEPROM UNTIL A STORE COMMAND IS ISSUED. TO CHANGE PIN FIRST UNLOCK WITH THE OLD PIN THEN LOCK WITH THE NEW PIN. BE CAREFUL WITH THE NEW PIN. IF IT IS LOST THE UNIT MUST BE RETURNED TO THE FACTORY TO RECLAIM IT. i. UPLOAD INTERNAL RESOLUTION Uploads internal resolution of slave FAD-4.
FLINTEC Master transmission: (PAR 2) STX ADD P 2 aa bb cc BCS2 BCS1 ETX aa : Weight resolution (01, 02, 05, 10, 20, 50). bb: The first 2 digits of weighing range (00-99). cc: DUAL INTERVAL. The first 2 digits of the weighing range for which the lower weight resolution will be selected automatically. 00 = DUAL INTERVAL NOT ACTIVE. Slave response: STX ADD ACK or NAK BCS2 BCS1 ETX A NAK block will be returned if some parameter is out of range.
FLINTEC Master transmission: (PAR 3) STX ADD p 3 BCS2 BCS1 ETX Slave response: STX ADD p 3 a b c d e f BCS2 BCS1 ETX a = Decimal digits (0, 1, 2, 3, 4) d = Dual digital filter 0=No 1=Yes b = Autozero maintenance 0=No 1=Yes e = Leading zero blank 0=No 1=Yes c = Autozero on power up 0=No 1=Yes f = Reserved Q: DOWNLOAD SETPOINT Used to download the two digital setpoint values. Master transmission: STX ADD Q x yyyyy BCS2 BCS1 ETX x : One digit (1-2) defining setpoint number.
FLINTEC Master transmission: (SETUP 2) STX ADD S 2 a bb cc BCS2 BCS1 ETX a: Slave address (A - Z) bb : Baudrate : 24 = 2400 baud 96 = 9600 baud 19 = 19200 baud 38 = 38400baud 57=57600baud 11=115200baud cc : Data bits / parity : 17 = 7 data bits even parity 08 = 8 data bits, no parity. Slave response: STX ADD ACK or NAK BCS2 BCS1 ETX New settings of baud rate , data bits and parity are not in effect until a write command ‘W’ is issued.
FLINTEC 4 SETUP & CALIBRATION SEQUENCE POWER ON SEND COMMAND “P1” SEND COMMAND “P2” SEND COMMAND “P3” SEND COMMAND “W” ELECTRONIC WEIGHTS CORNER CALIBRATION SEND COMMAND “c0” SEND COMMAND “C1” SEND COMMAND “c1” SEND COMMAND “C2” SEND COMMAND “c2” SEND COMMAND “C3” SEND COMMAND “c3” SEND COMMAND “C4” SEND COMMAND “c4” ELECTRONIC SEND COMMAND “A” SEND COMMAND ELECTRONIC SEND COMMAND WEIGHTS ZERO CALIBRATION “a” WEIGHTS SPAN CALIBRATION “B” SEND COMMAND “b” SEND COMM
FLINTEC 5 CALIBRATION EXAMPLES 5.1 STANDARD (WEIGHTS) Assume a scale of 150kg / 50 g with dual interval at 60kg. The scale is constructed with 4x 100kg loadcells 2mV/V at 5 conversion/sec with normal digital filter. The calibration procedure should be as follows : - - Power on the FAD–4 .
FLINTEC 5.2 ELECTRONIC (mV/V). Assume a scale of Max= 30/60kg , e=0.010/0.020kg , with 4 loadcells of rated capacity 50kg -2mV/V each and the dead load is 1.940kg. Conversion rate is 5/sec , the digital filter is normal . Loadcell data: L/C1 : 1.9793 mV/V output at 50kg and zero balance : 0.0257 mV/V. L/C2 : 1.9392 mV/V output at 50kg and zero balance : 0.0276 mV/V. L/C3 : 1.9577 mV/V output at 50kg and zero balance : 0.0553 mV/V. L/C4 : 1.9640 mV/V output at 50kg and zero balance : -0.0022 mV/V.
FLINTEC 6 OPERATION All data from the FAD-4 is available through the serial interface. When the unit is powered up or when the RESET command is received, the unit goes through an initialisation procedure during which the CPU, memory and peripherals are checked. The POST period is approximately 15 seconds. (Depends on the conversion rate). Then the unit is ready for operation. Immediately after the POST the unit will autozero (if auto zero on powerup is enabled). To get the weight scan with file type “?”.
FLINTEC 7 ERRORS This chapter provides information on error messages and troubleshooting instuctions. Errors may be hardware or software related. They are output in the form Error xx, where xx is the error code. The Master computer must send ACK block to acknowledge the error. Following is a list of errors with indication of possible causes and probable remedy. ERROR POSSIBLE CAUSE ACTION TO BE TAKEN ERR 01 ERR 02 ERR 04 ERR 05 System ROM. Faulty IC 2 System RAM.
FLINTEC 8 SPECIFICATIONS - MAINTENANCE 8.1 TECHNICAL SPECIFICATIONS ACCURACY CLASS RESOLUTION MAX TARE EFFECT AUTO ZERO TRACK WEIGHT DIGITS WEIGHT STEPS DIGITAL FILTER DIGITAL CALIBRATION III Selectabe up to 99.000 dd (in accordance with regulations). - Max Off or 0.5 dd setup selectable. 5 1, 2, 5, 10, 20, 50 Rolling average ( 1, 2, 4 samples). Digital corner calibration, Deadload, Span and scale. Parameters via serial commands.
FLINTEC 8.2 ENVIRONMENTAL CONSIDERATIONS AMBIENT TEMPERATURE HUMIDITY VIBRATION : : : AIR : PROTECTION : ELECTROMAGNETIC: FIELDS INCOMING AND : OUTGOING SIGNALS NOTES 8.3 : Storage -10 to +70 0C. Operating -10 to +40 0C. 40 to 90% RH (non condensing) Severe vibration can affect the accuracy of weighing and damage electric / electronic components. The surrounding air should be dust free and not contain any corrosive gasses or materials which could adversely affect the equipment. IP65.
FLINTEC Flintec GmbH Bemannsbruch 9 D 74909 Meckesheim Konformitätserklärung 0 Declaration of conformity Déclaration de conformité Die nichtselbsttätige Waage The non-automatic weighing instrument L’instrument de pesage à fonctionnement non automatique III Hersteller: Manufacturer. Fabricant: Flintec GmbH Typ/ Modell: Type l Model: Type / modèle: FT-01, FT-02, FT-03, FT-04 FAD-1, FAD-4, FDT-A/B Nr.
ADDITION No. DK 0199.37/1 to CERTIFICATE of EU TYPE-APPROVAL No. DK 0199.37 of FT-01 / FT-02 / FT-03 / FT-04 / FAD-1 / FAD-4 / FDT-A/B NON-AUTOMATIC WEIGHING INSTRUMENT Issued by DELTA Danish Electronics, Light & Acoustics EU - Notified Body No. 0199 In accordance with the requirements of the non-automatic weighing instruments regulation No. 560 of 23 June 1992 which implements, in Denmark, Council Directive 90/384/EEC.
ST 3 ST 5 1 2 3 4 1 2 Tilt sensor Power supply 24 VDC F 1 2 3 common (-) Input (Zero) Setpoint 2 4 Setpoint 1
ST2 1 2 3 4 4 (0 - 20 mA / 4 - 20 mA) 3 2 (15 - 24 VDC / 35 mA) 1 ST1 JP1 JP1 JP2 JP2 4-20 mA 0-20 mA Output selection
FAD-4 FAD-4 FAD-4 SLAVE 1 SLAVE 2 SLAVE 26 A A A B B B MASTER (PC, PLC) +V RT Terminal Resistance 470R A RT 150R B 470R 2 x 0,34 qmm (twisted pair) , shielded Max.
- SIG + SIG SHLD - EXC + EXC St6 2 - SIG + SIG SHLD - EXC + EXC St7 3 - SIG + SIG SHLD - EXC + EXC St8 4 - SIG + SIG SHLD - EXC + EXC load cells 1 FLINTEC Power supply 7-10 VAC / 7,5-12 VDC ST1 FAD - 4 ST2 A B RS485 JP2 RS485 Termination Resistor ST3 ST4 St9 JP1 CAL - lock ST5 Tilt sensor Output 1 Output 2 Input common
