Strain Gauge Measuring Amplifier BA 660

Transcription

1 Stran Gauge Measurng Amplfer BA 660 Orgnal of the Manual BA660 / IP20 BA660 / IP66 Table of Contents 1. Safety precautons Feld of applcaton Installaton Mantenance Functon Specfcatons Connectons / Dmensons How to connect force transducers Installaton recommendatons How to connect sgnal output Parallel connectons of outputs How to connect supply voltage Trgger nput Operaton Overvew operatng elements BA660/IP Settng of measurng range and flter BA660/IP How to operate the keys Amplfcaton Zero alngment Factory settng (RESET) Flter Sgnal output LED Status Restart EC Declaraton of Conformty...9 Techncal changes reserved. 05/2016 Page 1 of 9

2 1. Safety precautons In ths operatng manual, the nstallaton, puttng nto operaton and the operaton tself of the Stran Gauge Brdge Amplfer BA 660 s descrbed. It s assumed that all measures are taken by qualfed staff only who have adequate knowledge n the felds of measurng and control engneerng. ATTENTION! Any noncomplance wth these safety precautons may result n severe damage to property and health Feld of applcaton The Stran Gauge Brdge Amplfer BA 660 has been desgned to the purpose of amplfyng the output sgnals of sensors wth metalfol stran gauges, preferably force transducers and transform them nto standard sgnals. Any other applcaton s regarded contrary to the ntended purpose. The manufacturer does not accept any lablty for damages resultng from such napproprate usage. In ths case t s the user alone who has to bear the rsk. Type BA 660 must not be used as the sole means to prevent dangerous condtons of machnes and plants. All machnes and plants must be constructed n such a way (e.g. by usng mechancal stops, lmt swtches) that a condton of falure does not result n a stuaton of severe danger. It must be made sure that any erroneous settng or malfuncton of the unt or ts breakdown cannot cause damage or be a rsk to the operatng staff or other persons Installaton The unt must be nstalled and connected n complance wth the current DIN and VDEstandards. Supply cables and sgnal lnes shall be nstalled so that nterference sgnals such as electrcal nterference do not have any adverse effects on the functon of the equpment Mantenance The devce does not contan any components that requre mantenance. Repars shall be carred out by the manufacturer only. 2. Functon The Stran Gauge Brdge Amplfer BA 660 s a dgtal amplfer for the lowdrft amplfcaton of the output sgnals of sensors wth metalfol stran gauges, preferably force transducers to supply a standard sgnal of (10/0...10) VDC or (0/4...20) ma. An nternal voltage source provdes the stablzed feedng voltage for the sensor. The power s suppled by an unstablzed source of (9...36) VDC. The Stran Gauge Brdge Amplfer s delvered n a case for standard rals n accordance wth DIN EN The BA660 s delvered wth a factory settng for an nput sgnal of 2mV/V and a correspondng output sgnal of ± 10V or 20mA. The other nput sgnal ranges 0.1mV/V to 7mV/V can be generated nternally from the 2mV/V factory adjustments. The dfferent settngs of the factory adjustments (zero pont and gan) can be changed by the user through keys. By an optcally separated nput, the zerosettng can be carred out by means of a superor control and through the trgger nput. The overload lmt s not affected by such a zerong, whch means that 100 % of the endvalue adjustment of the sensor remans as end value. An exstng preload by a contaner can thus be set zero. Page 2 of 9 Techncal changes reserved. 05/2016

3 3. Specfcatons Class of accuracy at nput sgnal 2mV/V % FSR < 0.02 (typ.) Connecton for stran gauge sensor 4 or 6wre Brdge resstance / range of nput mpedance Input sgnal range (S/S) Exctaton voltage (Ex/Ex) Ω mv/v VDC (up to 6 loadcells each 350 Ω) 0.1 / 0.25 / 0.5 / 1.0 / 1.5 / 2.0 / 3.0 / 4.0 / 5.0 / 7.0 ±2.5 Norm Output Current Output Voltage Output Load resstance ma V Ω 0/ ; Measurement Characterstcs Converson rate Hz Resoluton of the A/D Converter Bt 24 Flter Hz Error at S=2mV/V Nonlnearty Nose (at measurement rate) Input senstvty for 1 LSB Zero drft Power Supply Input range Power consumpton (wthout sensor) Envronmental Condtons Operatng temperature range Storage temperature range %FSR %FSR nv %/ 10K VDC W 10/ / (0.8Hz) (2000Hz) 150 < C C Constructon BA 660/IP20 BA 660/IP66 Housng Weght Dmensons (W x H x D) Envronmental protecton (EN 50529) Termnal block, wre sze kg mm mm² Plastc housng for DINral mountng x x 99 IP Alumnum decast x 80 x 57 IP Crcut dagram Sensor Power supply 9 36VDC 0V Se Ex S S Ex Se Sh 2.Stab A D C 2.Stab EMCFlter 1.Stab µc Flter 16Bt DAC ±12V DIPSwtch (Konfg. DAC) Output IOut VOut AG Trgger nput Tr 24VDC Tr 0V Techncal changes reserved. 05/2016 Page 3 of 9

4 4. Connectons / Dmensons BA 660 / IP20 BA 660 / IP66 58 Flter (Hz) ,3 2,4 0,8 Output V V V V mA mA mA S S NC SHI Ex Se Se Ex BA 660 6Wre 4Wre mv/v Reset 100% 0% Status V OUT I OUT AG NC 24V 0V Tr Tr Termnal connecton Ex Se Se Ex S S NC SHI AG V out I out NC 24V 0V Tr Tr Descrpton neg. Extaton voltage neg. Sense sgnal pos. Sense sgnal pos. Extaton voltage Sensor wth pos. Sgnal 6wre neg. Sgnal not connected Sheld Ground for output sgnal Voltage output Outuput sgnal Current output not connected Supply voltage Power supply Supply voltage ground Trgger 24V electrcally solated nput Trgger 0V The connecton NC s only the BA 660 / IP20 avalable. Page 4 of 9 Techncal changes reserved. 05/2016

5 4.1. How to connect force transducers Installaton recommendatons Use shelded cables. Use the largest possble cable cross secton (Error due to cable extenson). Lay the measurng lnes separately from the power supply lnes. At the force transducers and the measurng amplfer, make as short as possble a connecton to earth, n partcular n strong electromagnetc felds. Addtonally, lay an equpotental bondng parallel to the measurng lne. Keep away from stray felds of motors, transformers and contactors. Connect force transducers, amplfer, mans unt, and ndcator / processor unt wth earth n one place only. Set the slde swtch for the sensng lne (6 or 4wre) accordng to the sensor connecton How to connect sgnal output The Brdge Amplfer BA 660 provdes dfferent output sgnals, dependng upon the settng of the slde swtches. (see 5.8) Ether the current output or the voltage output can be used, not both at the same tme Parallel connectons of outputs To form the sum, current outputs of several BA660 can be connected n parallel. In ths case, 12V should not be exceeded at the standard output and the maxmum load (load resstance) be <12V / I Out.Voltage outputs must not be connected n parallel How to connect supply voltage The supply voltage s connected to the termnal (24V) and to (0V). The brdge amplfer s protected aganst voltage reversal Trgger nput The BA660 has an optcally separate trgger nput so that the zerosettng can be carred out by means of a superor control. The overload lmt s not affected by such a zerong. The functon s started by a 24 VDC trgger mpulse. Techncal changes reserved. 05/2016 Page 5 of 9

6 1 Manual BA Operaton 5.1. Overvew operatng elements BA660/IP20 6Wre 4Wre mv/v RESET BA Status 100% 0% Connecton Senstvty / measurng range of sensor n mv/v Amplfcaton Push smultaneous: Load calbraton Factory settng (RESET) Zero : Push smultaneous: Zero calbraton LED: Status Flter (Hz) ,3 2,4 0,8 Output V V V V mA mA mA 5.2. Settng of measurng range and flter BA660/IP66 Flter (Hz) Sense mv/v 5 6 Reset ON 2 3 Output 100% 0% Swtch poston Measurng range (mv/v) 0,1 0,25 0,5 1,0 1,5 2,0 3,0 4,0 5,0 7,0 Flter (Hz) 0,8 2,4 8, How to operate the keys Keys ndvdually / short: Keys ndvdually / long (2s): Settng of the sgnal output Fast settng of the sgnal output Page 6 of 9 Techncal changes reserved. 05/2016

7 5.4. Amplfcaton >100% < and >100% < smultaneously (2s): Adjustment of the present nput sgnal (currently appled force) to100% of the output sgnal (endvalue adjustment). By ndvdually pushng the keys >100% < or >100% < respectvely, an ndvdual fne adjustment of the output sgnal / the end value s possble. INFORMATION! In case of changng the amplfer output by means of keys > 100 % < or > 100% < there should always be a zeroalgnment check. INFORMATION! Amplfcatonvalues are saved permanently 7 seconds after last push button acton. Durng savng LED blnks for a short tme Zero alngment >0% < and >0% < smultaneously (2s): Settng of the present nput sgnal at the output to zero pont (zeroadjustment / zeroalgnment) By ndvdually pressng the keys >0% < or >0% < respectvely, an ndvdual fne adjustment of the output sgnal / the zero pont s possble. INFORMATION! Zerovalues are saved permanently 7 seconds after last push button acton. Durng savng LED blnks for a short tme Factory settng (RESET) For all ten senstvty settngs / measurng ranges (see 5.1 senstvty n mv/v of the sensor) factory settngs are stored n the amplfer. Indvdual adjustments of the amplfcaton (see 5.4.) or of the zero pont (see 5.5) carred out later by the user, do only nfluence the actve measurng range that has just been set. When smultaneously pushng the two keys >100% < and >0% < for 2s, all zeropont adjustments and endvalue adjustments of all ten measurng ranges are deleted and reset to the factory settngs of 0mV/V ntal value of the selected sgnal output (5/10/0V or 0/4mA) and 2mV/V end value of the selected sgnal output (5/10V or 20/24mA). ATTENTION! After reset to factory settngs, the amplfer has to be newly adjusted to the sensor! 5.7. Flter Through a lowpass flter, the output sgnal can be set n 10 stages, from 0.8 to 2000Hz. Flter (Hz) 0,8 2,4 8, Internal Sample rate (Hz) Techncal changes reserved. 05/2016 Page 7 of 9

8 5.8. Sgnal output DIPswtch explanaton: DIPswtch functon: ATTENTION! In case of exceedance of the nput sgnal of >120%, the analogue output s set to the maxmum postve ntal value. In case the nput sgnal les n the range between 120% and 0%, the mnmum analogue sgnal s released at the unpolar voltage output and the current output respectvely (see too 5.9). output bpolar (U) OFF V 0 5V 10 10V 5 5V 0 20mA 0 24mA 4 20mA output unpolar (U/I) 120% 120% Input 120% 120% Input Sensor mv/v Graph 1 Output sgnal n case of error (bpolar) Output sgnal 5 5V, 10 10V Graph 2 Output sgnal n case of error (unpolar) Output sgnal 0 5/10V, 0/4 20/24mA 5.9. LED Status LED dsplay Explanaton Error descrpton Green Ready for operaton No error Red 1 x flashng ADCOverload Error at connectons of sensor lnes Cable break n sensor lne Swtch for 6 and 4wre not accordngly connected Red 2x flashng Indcates overload Exceed of maxmum load of 120% of nomnal or underload senstvty, or exceed mnmum load (see too 5.8) Red 3x flashng TEDS error Error n the memory of the automatc sensor recognton (only at BA660 opton wth TEDS) Red 4 x flashng Output > 100% The amplfcaton at the output s set too hgh. Red 5 x flashng Output sde not closed Current output open Cable break at output or overheatng DAC Thermal overheatng coolng necessary Red 6 x flashng Hardware error General error restart necessary Restart >100% < und >0% < smultaneously: A restart s carred out. All settngs are saved. Page 8 of 9 Techncal changes reserved. 05/2016

9 Manual BA EC Declaraton of Conformty Techncal changes reserved. 05/2016 Page 9 of 9