Analog Integrating Totalizer Installation and user manual
Contents
1. Leds OUT 1 and OUT 2 reflect alarm relays state activated or deacti vated Once an alarm AL or AL 2 is activated the lower display read ing starts blinking 1 time 2 seconds for advising the operator that a alarm condition has occurred Special reset functions If these functions are enabled from the general configuration menu is possible to reset the maximums minimum latched alarms or disable momentarily the relay outputs by pressing one of the front panel buttons or v Access to special functions and registers For entering to the menu press the center button immediately one of 2 submenus should be selected by means of the lateral buttons and finally press again the center button to enter the selected sub menu rEAd Examine parameters values Func Reset functions and outputs disable While you are within this menus the instruments continues integrating the analog input Following the content of each sub menu is described User Manual FL20a rev 07 2009 www arian cl 91 Sub menurE Ad examine parameter values This menu only permits to examine not to modify the values of some internal parameters With lateral buttons you can scan parameters Pressing central buttons returns to normal operation mode process variable reading PV Maximum registered for PV Minimum registered for PV2. Shows general Set Point for alarms configured with relative set points Sub menu F unc reset maximum minimum disabling outputs rSt N rSt A di AL rst C This menu can be locked from the configuration menu in that case the upper display shows the message Lock Once entering this Sub menu can be selected one of the following special functions that will be executed immediately Resets registered maximum and minimum of PV Resets latched alarms Disables momentarily and enables the relay outputs If outputs are momentarily disabled by this function the RUN led in front panel blinks rapidly Resets returns to cero the totalized count Once a function is selected with the lateral buttons press central button and will be executed in the instantaneously and instrument returns back to normal operation mode If no button is press in 16 seconds the instruments exits menu User Manual FL20a rev 07 2009 www arian cl 29 Modify alarms Set Points IMPORTANT NOTE Once entering this menu the instrument stops integrating the process variable and will start doing it again when you exit the menu To enter the menu press the center button and without releasing it press and release one time the right or upper button Doing that the message KEY will appear in the upper display At this moment the instrument asks for a access key Now the number 1234 should be introduced in the lower display and then p
3. TECHNICAL SPECIFICATIONS INPUTS Process variable type 4 20 mA 0 20 mA 0 5 V 1 5 V 0 10 V 0 50 mV DISPLAY Allows engineering units with decimal places for totalized count and process variable reading Register max min of process variable reading Totalizer 6 digits Display 14mm range 0 999999 Analog process variable 4 digits 9mm range 999 9999 ALARMS 2 independent alarm outputs each one with high and or low alarm with absolute or relative set points Programmable alarm latch and standby that inhibits alarms when modifying set points Can be assigned independently to the process variable or Totalizer OUTPUTS Relays 2 outputs for alarms 250VAC 3A normally open or normally close by soft ware Optional 420L 4 20 mA loop powered Vdrop 4 5V max opto isolated 5kV 420A 4 20ma 0 10V Active loop opto isolated 5kV RS485 modbus RTU serial communications opto isolated 5kV POWER SUPPLY Current mode switching power supply Versions 85 260 Vac 6 W 45 65 Hz 20 60 VDC 6 W optional CONSTRUCTION Aluminum and Polycarbonate IP65 Total Dimension DIN 1 8 96 x 48 x 135 mm Panel cut 92 x 45 mm Weight 300 grams Operation temperature 0 50 C User Manual FL20a rev 07 2009 www arian cl INSTALLATION Input connections are in terminals 2 and 3 as indicated in the draw ing Terminal 3 is connected to the instrument internal ground and can u
4. 11 functions menu e g reset maximum minimum alarms etc as described in operation chapter Prog No Si Set Si for programming new data Otherwise data will be lost when quitting this menu SALi No Si Set Si for quitting this menu Otherwise return back to its starting point User Manual FL20a rev 07 2009 www arian cl 12 Input configuration L inF L S uP Accumulator Previously must been set the input configurating pins for current or voltage input as described in the installation chapter Processes input type Type Range O 20 0 20 milliamperes 24 24 mA 4 20 4 20 milliamperes 2 mA 24 mA 0 5v 0 5 volts 2 V 12 V 1 5v 1 5 volts 2 V 12 V O 10 0 10 volts 2 V 12 V O 50 0 50 millivolts 10 mV 60 mV 999 9999 Introduce reading value for input at the lower limit of selected input type For example the input is 4 20mA and comes from a flow sensor that gives 4 mA at 0 kg hour flow and 20 mA at 1000 kg hour In this case is being asked for the reading at 4 mA that is LinF 0 999 9999 Introduce reading value for input at the higher limit for selected input type For the same previous example it is asking for reading at 20mA input that is LSuP 1000 EE Corresponds to a time constant for filtering or conditioning noisy inputs Internally the instrument carries out a first order low pass filter calcul
5. Case o F F Nothing is asked high alarm is disabled Case onFh 2 H SP 999 9999 Set Point for AL 2 high Becomes active when PV gt 2 H SP Considering hysteresis 2 H ht 0 999 Hysteresis for the activation and desactivation of the AL 2 high 2 H dS 999 9999 Alarm 2 high activation point separation referred to S P rE Will become active when PV gt SP rE 2H dS Considering hysteresis 2 H ht 0 999 Hysteresis for the activation and desactivation of the AL 2 high Alarm 2 Low Depending on value of L o w for AL 2 configuration the following cases will be given Case o F F Nothing is asked low alarm is disabled Case onFh 2 L SP 999 9999 Set Point for AL 2 low Becomes active when PV lt 2 L SP Considering hysteresis 2 L ht 0 999 Hysteresis for the activation and desactivation of the AL 2 low Case donF 2 L d 999 9999 Alarm 2 low activation point separation referred to S P rE Will become active when PV lt SP rE 2L dsS Considering hysteresis 2 L ht 0 999 Hysteresis for the activation and desactivation of the AL 2 low User Manual FL20a rev 07 2009 www arian cl 26 Alarm 1 associated to totalized count Alarm 1 High Depending on value of High for AL 1 configuration the following cases will be given Case o F F Nothing is asked high alarm is disabled Case onFh Set Point for
6. Volts For example if output for input temperature was selected when E i n F 0 the output will be 4 mA for zero de grees temperature For lower temperatures the output will descended down to 3 5 mA aprox 999 9999 Introduce the value of selected output variable for which the output will deliver 20 mA or 10volts For the same example place E S u P 1000 then the output will be 20 mA when temperature is 1000 For higher temperatures the output will rise up to 20 5mA This refers to output board calibration is reserved for manufacturer use No Si Set Si for programming new data Otherwise data will be lost when quitting this menu No Si Set Si for quitting this menu Otherwise return back to its starting point User Manual FL20a rev 07 2009 www arian cl 18 Option 420AC Salidas 4 20mA y 0 10V Activas 4 20mA and 0 10Volts active output RS 485 8 Opcion 420LP Salida 4 20mA pasiva alimentada por Lazo 15 _ 16 18 Loop powerd 4 20mA output EES 1 2 3 4 5 6 7 8 9 OOOOH Para la salida activa opcion 420AC se debe colocar el PIN en una de las dos posiciones seg n sea la salida de corriente o voltaje 0 10V For active output option 420AC internal jumper must be set H 4200UT_00 Possible analog output variables for the FL20A Process variable input Desviation output proporcional to Ln Pt S P r E Relative Set Poin
7. and low for each alarm possess programmable hysteresis and can be defined as absolute value or relative displacement to a common Set Point Now is described the configuration for alarm 1 Configuration of alarm 2 is similar Selects the variable associated with alarm 1 rAtE rate Cntr totalized count Depending on the selected option the alarm operation form varies Selecting C n t r disables Latch and Standby functions Also will be not available the d o n F option for high and low alarms When r At E is selected then the following parameters are required High set point for alarm 1 OFF Disabled onFh On off with hysteresis high alarm The alarm activates when input is higher than a value programed in the parameters menu dont Dual on off type high alarm The alarm activates when input is higher than a value defined by general Set Point SP rE plus a displacement programed in the parameters menu Low set point for alarm 1 OFF Disabled onFh On off with hysteresis high alarm The alarm activates when input is lower than a value programed in the parameters menu dont Dual on off type high alarm The alarm activates when input User Manual FL20a rev 07 2009 www arian cl 15 rELE is lower than a value defined by general Set Point SP rE minus a displacement programed in the parameters menu Enable Latch alarm If enabled the alarm condition output will be maintained a
8. push bottoms so only can be pro grammed from a PC compatible computer The following is needed The PC compatible computer with vga monitor RPS software download latest version from www arian cl Isolating interface cable Part RPS C While using the RPS system the configurating menus are the same de scribed in following chapter for frontal push bottoms programming With de energized instrument the interface cable must be connected by one side to the internal connector as shown in the picture The other side of the cable goes to the PC serial RS232 port DB9 Once done the connection the instrument must be energized and RPS software executed in the PC The interface cable does optical isolation between PC and instrument Concluded the programming you must de energized the device and then plug off the interface cable User Manual FL20a rev 07 2009 www arian cl CONFIGURATION Operation form must be programed on this configuration menu IMPORTANT NOTE MEnu Once entering on this menu the instrument stops integrating the analog input and will continue only when you exit the menu and return to the operation mode To enter the configuration menu press the center button and without releasing it press and release one time the right or upper button Doing that the message KEY will appear in the upper display At this moment the instrument asks for a access key Now the number 2736 should be introdu
9. A RLA fw FL20A Analog Integrating Totalizer Installation and user manual rev 07 2009 ARIAN S A El Comendador 2340 Santiago CHILE Fono Fax 4218333 www arian cl PRELIMINARY INFORMATION Technical help Revision history rev 05 05 rev 08 2007 rev 07 2009 This document haves copyright reserved C Arian INC Referred trademarks are of property of its respective owners ARIAN is registered by Arian S A If you find problems with the instrument check its configuration to be coherent with the application If still it persists the problem help can obtain by the following media e mail arian arian cl phone fax 56 2 4249363 web www arian cl First release Added functionality for totalized count disable Cut off function modified on page 14 GENERAL DESCRIPTION scci cc ococicnacaciodinanainacacnnaina dicen narrada aa 4 PART CODE stato 5 TECHNICAL SPECIFICATIONS ege 6 INSTALLATION eege 7 Alarm outputs teeth ota egene tel A 8 External reset inpuls o ala ian 8 Analog outputs OP ON litis 8 RS485 serial communications Optional ooocooncocccccnnnnnncnanoccnonononanoncnnnnncnnnnnnnnnnnnnnnnnnns 8 ee ET TEE 8 Panel ASSe ee 8 CONFIGURATION FROM PC RPS occccccccccccccccccccccccccccccccccccnnccnncnnancnnnnnnnns 9 CONFIGURATION osito is 10 General Configuration menu OPE Pia ida 11 fale en lee 13 Alarms configurati
10. AL 1 high is active when Totalized gt SP Set point is entered in 2 parts first the 4 less significant digits and then the 2 most significant in order to have a 6 digit number for SP LHSA 0 9999 1 H S 4 0 99 Alarm 1 Low Depending on value of L o w for AL 1 configuration the following cases will be given Case o FF Nothing is asked low alarm is disabled Case onFh Set Point for AL 1 high is active when Totalized lt SP Set point is entered in 2 parts first the 4 less significant digits and then the 2 most significant in order to have a 6 digit number for SP zech TT G i A ll 0 9999 1 L S 4 0 99 Alarm 2 associated to totalized count Is configured in the same way as explained for Alarm 1 high and low User Manual FL20a rev 07 2009 www arian cl 27
11. ation with time constant FILt Can be set between 1 and 16 seconds Better you should leave this value set to 1 second increasing it only if its required by having noisy readings The totalized flow is actualized adding each second the process variable to the last totalized The reading is presented in the higher 6 digits display and is obtained by dividing the internal totalized value by a constant This constant allows to adjust for engineering units For example the input is 12ma that in scaled 4 20 as 0 1000kg hour gives a process variable of 500kg hour If the input is stable each second 500 is added to the internal totalized If the input is constant one hour then 500 had been added 3600 times So the totalized had increased 1800000 If you want to have the totalized reading in kg you must divide by 3600 User Manual FL20a rev 07 2009 www arian cl 13 r OFF Prog This way if you reset the instrument and let it work 1 hour with the con stant 12ma input the reading will be 500 500kg hour 3600 3600 500 In order to have the reading in kg with one decimal point e g 100 3kg then you must divide by 360 so reading would be 5000 in stead of 500 and also activate the decimal point as indicated in the general configura tion menu The division constant may have any value in the range of 0 999999 and is entered in 2 parts first the 4 less significant digits and then the 2 most significant i
12. ced in the lower display using the left or lowering and right or upper button Once the number 2736 is in the lower display press the button to enter Now in the upper display appears the message M E n u With the lateral buttons select one of the 5 menus and to press center button to enter To quit select the option SALi or wait 16 seconds without press ing any button OPEr General menu configuring displays operation modes and other options InPt Analog input configuration AL 1 alarm 1 configuration AL 2 alarm 2 configuration 4 20 analog output 0 10V 4 20mA if it is available r485 rs485 serial communications SALi Returns to operation mode Once entering one of the menus if no button is press in 16 seconds the devices returns automatically to operation mode At the end of each menu always is asked if is desired to program the new data and then to quit or continue configuring These questions are presented as is asked if is desired to program or not the instrument with the introduced values Selecting No values recently placed will be erased and original values will not change No Do not program new values i Set in EEPROM new values We Select Si for quit exit the menu and N o for returning back to the starting of the actual configuration menu No Continue in this menu i Quit or exit the menu We User Manual FL20a rev 07 2009 www ar
13. e 0 5 seconds active and 0 5 second deactivated If 4 pulse seconds are emitted relay will be 0 125s active and 0 125 deactivated User Manual FL20a rev 07 2009 www arian cl 17 Analog output configuration 4 20 mA or 0 10V Option 420LP 4 20 Option 420AC tYPE VArb E inF E S uP This output is optional although the configuration menu is in all instru ments hardware the optional output board could not be installed There are 2 analog output types both optically isolated Option 420LP is 4 20ma loop Powered that requires a voltage source in series with the loop Its typical use is conditioning and isolating process variable for other instruments as e g PLC or DCS Option 420AC is 0 20mA 4 20mA or 0 10V active output Its used to send the selected variable to instruments whose input should be active powered such as 0 10v or a 4 20ma loop powered valve Exists an internal jumper that must be placed depending on current or voltage output see figure in the following page The questions in the menu vary slightly according to board type installed OFF Disable output on enabled OFF Disabled 0 20 0 to 20 mA 4 20 4 to 20 mA 0 10 O to 10 Volts Asks by the variable that will be transmitted See in the following page the table for the possible analog output variables 999 9999 Introduce the value of the selected output variable for which the output will deliver 4 mA or O
14. ian cl 10 General Configuration menu OP Er dis b P d i A Eu Le Refers to the lower display OFF Disabled Display rAtE Process variable PV analog input MACS PV maximum Mini PV minimum Places a fixed decimal point in the lower display to facilitate the viewing engineering units _ _ Without decimal point Places a fixed decimal point in the 6 digit higher display to facilitate view ing engineering units The options are the same described for display b A function is assigned to the external reset input 1 associated to terminal 12 OFF there is no function assigned rSt N Reset registered maximum and minimum of rate rSt A Reset latched alarms di AL Disable restore momentarily the alarm relay outputs While disabled the alarms the RUN led on front panel blinks quickly rst C Reset to cero totalized count A function is assigned to the external reset input 2 associated to terminal 13 Options are the same described for previous case Special function set for the Lowering button v on the front panel the left one Options are the same described for previous case Special function set for the high button on the front panel the right one Options are the same of the previous one No Si Special functions lock It should be set Si to restrict operator access to F u n c special User Manual FL20a rev 07 2009 www arian cl
15. input Alarms 4 alarms assigned independently to preset values of the totalized count or the input process variable Are associated to the 2 output relays Latch and standby functions Outputs Two output relays with two programmable alarms each high and low Output pulse with frequency proportional to the analog input For external totalizing in PLCs Communications RS485 Modbus RTU serial communications reports data to a PC or PLC Galvanically isolated analog outputs for the process variable Active loop 4 20ma 0 10V passive loop 4 20ma Configuration From a PC compatible by means of RPS software From frontal push buttons a d User Manual FL20a rev 07 2009 www arian cl PART CODE Defining a part number must be done selecting the following options Last 2 ones 420A 420L RS85 are optional that must not be included if no required FL20A AC 420A RS485 DC 420L AC power supply 85 260 Vac 6 W 45 65 Hz DC power supply 18 60 Vdc 6 W OPTIONAL OUTPUT 420L 4 20ma passive loop 420A 4 20ma active includes also 0 10Vdc OPTIONAL RS485 modbus RTU serial communications For example FL20A AC FL20A with AC power supply without any optional output FL20A DC RS485 FL20A with DC power supply and modbus RTU serial communications User Manual FL20a rev 07 2009 www arian cl
16. lthough the condition that generated it disappears Operator must reset the latched alarm from the front panel No disable Si enable The standby function inhibits alarm activation when the operator changes the Set Point or the instrument is powered up If alarm condition is given in that situation the activation of the alarm 1 is inhibited until the condition that generates the alarm disappears After the condition that generates the alarm disappears e g the rate reading arrived to the new set point then the alarm is ready to be acti vated by normal operation No disable Si enable Is specified if the relay 1 will work normally open or normally closed This relay is active when alarm 1 condition exists dir Relay works direct normally open inv Works inverted or normally closed No Si Set Si for programming new data Otherwise data will be lost when quitting this menu No Si Set Si for quitting this menu Otherwise return back to its starting point User Manual FL20a rev 07 2009 www arian cl 16 Alarm 2 and pulses output ALAr Alarm 2 is configured in identical way that is done for alarm 1 but the output is related to relay 2 The only difference is an additional option for emitting pulses with the relay for external counting Pulses rate are proportional to the analog input This way pulses can be count in a PLC Once entering Alarm 2 configuration menu the following is re
17. n order to have a 6 digit number 0 9999 4 less significant digits 0 99 the 2 most significant Off On Totalized count inhibition enable If enabled each second the input is compared with the number set as r Lin if lower then the totalized count update is not done Off On Rate cut off enable If enabled the input is compared with the number set as parameter r Lin if lower then the input rate is set to cero This is a cut off level for the input Use it for example if you don t want to have input negative values set r Lin 0 0 9999 Rate lower limit Input lower limit used when enabled some of the 2 preceding options No Si Set Si for programming new data Otherwise data will be lost when quitting this menu No Si Set Si for quitting this menu Otherwise return back to its starting point User Manual FL20a rev 07 2009 www arian cl 14 Alarms configuration ALAr The FL20A possesses 2 independent alarms alarm 1 and alarm 2 each One associated to a output relay relay 1 and relay 2 This alarms can be associated to the rate or to the totalized count read ings independently Each one of the alarms alarm 1 and alarm 2 haves 2 Set Points high and low The alarm will activate when the input passes one of these limit Once the alarm condition is set the upper display will operate intermit tently indicating that this condition exists Both Set Points high
18. nal load External reset inputs The instrument haves 2 external inputs for connecting push buttons or switchs In the configuration menu is assigned a function to the inputs such reset total to cero reset registered maximum and minimum Switchs are connected to terminals 14 13 and 12 Gnd Analog outputs optional For isolating and retransmitting the measured variable to a PLC or an other instrument If this options are installed please refer to analog output configuration chapter for details RS485 serial communications optional Power supply For communicating with PC or PLC using modbus RTU software protocol This is an isolated out that drives standard RS485 5Volts signals If this options are installed please refer to RS485 communications configuration chapter for details The instrument power supply is designed to operate with any voltage between 90 and 260 volts without need of adjustment 20VDC to 60VDC for the DC power supply option Once start up will continue operating unless the network fall under 50 VAC The instrument possesses an internal 0 5Amp fuse that should be replaced with a similar one Panel assembly Designed for panel assembly in a 92 x 45 mm cut Format DIN 1 8 using clamps included with the instrument User Manual FL20a rev 07 2009 www arian cl CONFIGURATION FROM PC RPS Two displays versions may be programmed by frontal push bottoms while One display versions does not have
19. ons cattira as aslo e ea 15 Alarm 2 and pulses output EE 17 Analog output configuration 4 20 MA or 0 10V incooccccccnccnncccccnnnnnnnnnnanncnnnnnnnnnnncnnnincnnnns 18 Serial RS485 communications configuration oooocccccnnnocococcccncnonancnnnnnnnnnanananoncncnnnnnnnnnos 20 OPERATION E 21 Special reset functions ta oa 21 Access to special functions and registers EE 21 Sub menurE Ad examine parameter values snnnnnoooonrnetttnrrtrnnnnnnnenennenennee enee 22 Sub menu F unc reset maximum minimum disabling outputs ooocccccccnnncccccnnnccnnn 22 Modify alarms Set Points tutes siesta aaa 23 GENERAL DESCRIPTION The FL20A is a analog process variable meters e g 4 20ma with inte grating capacity Each second adds the input in a 6 digits counter Total ized creating a time integral of the process variable Typical uses are jointly with analog output flow meters e g magnetic flow meters allowing to have the flow rate in the lower 4 digit display and the total accumulated flow in the upper 6 digit display Inputs Standard process variables as 4 20mA 0 10V etc Two additional external inputs dry contact programmable as reset func tions Readings Totalized in 6 high bright 14 5mm height red digits Upper display Input process variable in lower 4 digits Pre scale adjust the totalized for any engineering unit Continuous memory stores last reading Registers maximum and minimum readings for process variable
20. quested Selects operation form of the alarm a relay rAtE alarm set to the process variable input Cntr alarm set to the totalized count PuLS Pulse output on relay 2 Depending on the selected option the alarm operation form varies Selecting r At E or C n tr makes this alarm to operate the same way as described for alarm 1 If Pu L S is selected the output pulses on relay 2 are enabled and the following is requested 1 9999 Division constant for output pulses Each second it is evaluated how much the totalized is increased A pulse will be emitted for increase equivalent to the division constant The pulses will be emitted by relay 2 in the following second For example if the input rate is 500kg hour y and the totalizer prescale is 3600 then the totalized will be in kg each unit the totalized increases is equivalent to 1kg If you need that the instrument send 1 pulse for each 100kg increase then set the output prescale P C t E 100 Same way if you need 1 pulse for each kg set P CtE 1 The maximum number of pulses that can be emitted by second is 100 but if the output relay is mechanical type there is the option for SSR Relay no more than 4 pulse by second should be allowed because of speed response limitation of the relay For this reason the maximum expected input rates must be considered when you set the constant Emitted pulses are always 50 duty cycle If one pulse second is emitted the relay will b
21. ressed the button to enter The FL20A possesses 2 independent alarms AL 1 and AL 2 each one associated to a output relay and can be linked to totalized count or PV Each alarm possesses a high and low set points When the measured variable is lower to the low set point or higher to high set point the alarm and its corresponding relay is activated For example the alarm 1 low has a set point SP 1L that can be obtained in two different ways depending if it was configured as absolute onFh or relative donF in the alarm configuration menu SP 1L SP 1L IL d case dont SP re IL E SP case onFh SP 1L 1L ht 2 SP 1L SP 1L 1L ht 2 In the same way for high alarm 1 SP 1H SP rE 1 H dS case donF SP 1H 1 H SP case onFh ON AL 1 alta SP 1H 1H ht 2 SP 1H SP 1H 1H ht 2 This menu is diferent depending if you have chosen to associate the alarm to totalized count or PV also depends on the enabled options in the configuration menu User Manual FL20a rev 07 2009 www arian cl 23 Alarm 1 associated to process variable If alarm AL 1 or AL 2 or both are enabled as relative alarms the is required to set SP rE 999 9999 General Set Point used in calculation of alarm operation point only for alarms configured as relative donF This parameter is asked only if some alarm was set as do n F other case is omitted Alarm 1 High According on value High for AL 1 configura
22. sed for the connection of external shield of some sensors It is important that the cables that bring the sensor signal be apart from cables connected to the output relays since this normally are inductive loaded When deactivated this relays can generate high voltage spikes that can cross the cable insulator and disturb even damage the input circuit FL20a Electrical conections y y ANALOG OU RS 485 Gnd Ex2 Ex1 B All l 10 _ 11 12 _13 _14 _15 _16 _17 18 se ese ess 8 V Gndl 90 260Vac OUT 1 OUT 2 0 20mA 4 20mA far dis 0 10V 0 5V 0 50mV FID2019B There are internal jumpers to be configured according to the input type that will be used The input type and ranges must also be specified in the configuration menu Configuraci n de Pines de Entrada FL20a 0 50mV CET ET O0 4 20mA 0 20mA 0 10V 0 5V 1 5V Le fid20_16 User Manual FL20a rev 07 2009 www arian cl 7 Alarm outputs Relays are the standard option for alarm outputs As seen in the figure relay for alarm 1 OUT 1 goes to terminals 6 and 7 The one for alarm 2 OUT 2 to terminals 8 and 9 both are normally open outputs NO Care must be taken on not exceeding the maximum relay current 3 Amp since they would be damaged quickly Is recommended to use fuses in series with the relays to protect them Never use directly the internal relay with the load Always a external contactor should be used to drive the fi
23. t use on alarms Process variable maximum Process variable minimum User Manual FL20a rev 07 2009 www arian cl 19 Serial RS485 communications configuration Characteristics Serial rs485 communications are optional although the configuration menu is in all the instruments hardware for its operation could not be installed The command description for the communications protocol is available as file in internet www arian cl and includes tag listing with its properties and scales RS485 physical protocol with optically isolated interface start bit 8 data bits parity bit O stop bit communication protocol Modbus RTU functions 03 06 10 The questions in the configuration menu are the following nodE bAud nScLl oFF oN Enable or disable communications 300 600 1200 2400 3600 4800 9600 19 2k Communication speed 1 247 Slave number No Si Set Si for programming new data Otherwise data will be lost when quitting this menu No Si Set Si for quitting this menu Otherwise return back to its starting point User Manual FL20a rev 07 2009 www arian cl 20 OPERATION DISPLAY A DISPLAY B Activated alarm The location of the front panel buttons can be seen in the figure The central button is the main one is used for selecting and entering parameters Lateral buttons are used to increase or decrease selected parameter e
24. tion the following cases will be given Case o FE Nothing is asked high alarm is disabled Case onFh 1 H SP 999 9999 Set Point for AL 1 high Becomes active when PV gt 1 H SP Considering hysteresis 1 H ht 0 999 Hysteresis for the activation and deactivation of the AL 1 high LH dS 999 9999 Alarm 1 high activation point separation referred to S P rE Will become active when PV gt SP rE 1 H dS Considering hysteresis 1 H ht 0 999 Hysteresis for the activation and deactivation of the AL 1 high Alarm 1 Low According on value L o w for AL 1 configuration the following cases will be given Case o F F Nothing is asked low alarm is disabled Case onFh 1 L SP 999 9999 Set Point for AL 1 low Becomes active when PV lt LE Sb Considering hysteresis 1 L ht 0 999 Hysteresis for the activation and desactivation of the AL 1 low User Manual FL20a rev 07 2009 www arian cl 24 Case donF LL d 999 9999 Alarm 1 low activation point separation referred to S P rE Will become active when PV lt SP rE dba ds Considering hysteresis 1 L ht 0 999 Hysteresis for the activation and desactivation of the AL 1 low User Manual FL20a rev 07 2009 www arian cl 25 Alarm 2 Rate associated Alarm 2 High Depending on value of High for AL 2 configuration the following cases will be given
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