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1. Delay of alarm switching 2 Alarm Alarm working mode Upper value of alarm switching Aor Lower value of alarm switching Aol Delay of alarm switching s 5 3 3 Measured Values Fig 12 Window view of the measured value group Farameter Measured value Calibrator ID 0 After choosing group measured values following information 15 displayed measured value displayed kind of input execution number of the person responsible for the calibration serial number of the meter 16 5 4 Manufacturer Parameters Table 2 Parameter description Range value Manufacturer value Display colour of the measured red green orange red upper value a Display colour of the measured were red green orange green 105 of rated value Un Upper threshold KpH 19999 99999 In or 200 C Lower threshold KpL 19999 99999 A In or 100 C 00000 0000 0 000 00 900 00 for U l 00000 for 00 000 0 0000 thermocouples J and K 0000 0 for Pt100 Highlight of the measured unit switched off switched on switched on for Pt100 thermocouples J and K switched off for other executions Decimal point Automatic compensation of the terminal temperature wire switched off switched on resistance Manual compensation value terminal temperature 20 60 C wire resistance 0 2 in other cases ao 0 5 s 15 35 5 10 5 ging 15 s 20s Upper overfl2. data One must set up again meter parameters by means of the LPCon program 7 TECHNICAL DATA Measuring ranges INPUTS Measuring ranges of Un voltage 11 10 60 66 mV Hex 0 10 11 11 10 10 11 V Measuring ranges of In current input resistance 10 1 input resistance 10 1 input resistance 5 1 1 0 20 222 3 6 4 20 22 22 20 20 22 Temperature measurement through Pt100 Resistance of wires connecting the resistance thermometer to the meter Temperature measurement through thermocouple J Temperature measurement through thermocouple K Preheating time Intrinsic error at manufacturer settings Additional errors in rated operating conditions compensation of reference junction temperature changes input resistance gt 1 50 400 C current flowing through the sensor lt uA lt 10 of one wire 50 1200 C 13 05 30 min 0 2 of the range 1 digit 0 2 of the range 19 compensation of wire resistance changes from ambient temperature changes Averaging time Alarm outputs Output to supply external transducers Rated operating conditions supply voltage ambient temperature storage temperature relative air humidity working position Sustained overload capacity measurement of voltage current Short duration overload capacity 3 s sensor
3. improvement and we reserve the right to make changes in design and specifications of any products as engineering advances or necessity requires and revise the above specifications without notice 26 27 SALES PROGRAM MEASUREMENT DIGITAL and BARGRAPH PANEL METERS CONTROL MEASURING TRANSDUCERS RECORDING ANALOG PANEL METERS DIN INSTRUMENTS DIGITAL CLAMP ON METERS INDUSTRIAL PROCESS and POWER CONTROLLERS CHART and PAPERLESS RECORDERS 1 PHASE and 3 PHASE WATT HOUR METERS LARGE SIZE DISPLAY PANELS ELEMENTS OF INTEGRATION SYSTEMS ACCESSORIES for MEASURING INSTRUMENTS SHUNTS CUSTOM MADE PRODUCTS ACCORDING to CUSTOMER S REQUIREMENTS WE ALSO OFFER OUR SERVICES IN THE PRODUCTION OF ALUMINIUM ALLOY PRESSURE CASTINGS PRECISION ENGINEERING and THERMOPLASTICS PARTS SUBCONTRACTING of ELECTRONIC DEVICES 5 PRESSURE CASTINGS and OTHER TOOLS QUALITY PROCEDURES According to ISO 9001 and ISO 14001 international requirements All our instruments have CE mark For more information please write to or phone our Export Department Lubuskie Zaktady Aparat w Elektrycznych LUMEL S A ul Sulechowska 1 65 022 Zielona Gora Poland Tel 48 68 329 51 00 exchange Fax 48 68 329 51 01 e mail lumel lumel com pl http www lumel com pl Export Department Tel 48 68 329 53 02 Fax 48 68 325 40 91 e mail export lumel com pl N20 07B
4. indications individual characteristic two alarms of OC type operating in six working modes The alarm output switching on is signaled by the highlight of the triangular alarm index situated at the left display side for the suitable alarm digit The highlight colour is always different from the colour of the displayed measured value The meter has a galvanic separation between the supply measuring inputs and the programmer input The protection level from the frontal side is IP65 Meter overall dimensions 96 x 48 x 64 mm including terminals Fig 1 view of the N20 meter 2 METER SET The set is composed of N20 ME ee 1 pc user s Malal cnica 1 pe guarantee 1 pc clamps to fix in the panel 4 pcs A 1 set of labels with units 1 pc When unpacking the meter please check whether the type and execution code on the data plate correspond to the order 3 BASIC REQUIREMENTS AND OPERATIONAL SAFETY In the safety service scope the N20 meter meets the requirements of the EN 61010 1 standard Observations concerning the operational safety All operations concerning transport installation and commissioning as well as maintenance must be carried out by qualified skilled personnel and national regulations for the prevention of accidents must be observed Bef
5. inputs voltage input Current input Readout field Ensured protection grade from frontal side 20 0 2 of the range 0 1 of the range 10 K lt 0 5s 1s by default outputs of O C type 30 V 20 mA passive outputs acc to EN 62053 31 24 V 5 30 mA 85 253 V 45 65 Hz or d c 20 40 V a c 45 65 Hz or d c 10 23 32 25 85 lt 95 inadmissible condensation of water vapour any 10 30 V 10 Un 10 In 5 digit three colour LED displays digit height 14 mm colours green orange red indication range 19999 99999 IP 65 acc EN 60529 Overall dimensions 96 x 48 x 64 mm with terminals Cut out dimensions in panel eds Weight lt 0 25 Kg Power consumption lt 6VA Galvanic isolation between supply measuring input 3 2 kV d c Electromagnetic compatibility noise immunity acc to EN 61000 6 2 noise emission acc to EN 61000 6 4 Safety requirements acc to EN 61010 1 standard isolation between circuits basic installation category Ill pollution degree 2 maximal phase to earth working voltage for supply circuit 300 V at supply 85 253 V for measuring input 50 V for input destined for programming 50 V altitude above sea level lt 2000 m 21 8 ORDERING CODES Table 3 Input PIDO 80 240096 anne 1 thermocouple J 50 1200 C 2
6. possible to be configured a display colours of the measured value The displayed range is divided into three zones separated by KpL and KpH values suitably the lower threshold KpL and the upper threshold KpH of display colour change fig 8 The colour of displayed numbers for each zone is selected from three accessible colours green orange and red KpL and KpH values are set by the user and concern the displayed value i e taking also into consideration the individual characteristic The manufacturer value KpL is equal 100 of the rated value however KpH is equal 105 of the rated value e g for a 10 V meter execution they are respectively for KpL 10 V and for KpH 10 5 V Caution After setting the individual characteristic KpL and KpH values are not automatically updated b decimal point measurement precision We have 5 possible display configurations at choice When choosing one must follow the measurement precision e g for the 10 V range the measurement error 15 0 02 V so the choice of precision with three places after the decimal point does not give more precise measurements When manufacturing for executions with voltage and current measurements the precision 000 00 is set for executions with Pt100 temperature measurement 0000 0 for execution with the temperature measurement through thermocouples 00000 c unit highlight The unit highlight can be enabled or disabled When manufacturing it is
7. thermocouple 50 1370 3 geet mtorr cao 4 Supply 85 253 V 45 65 HZ Or 1 20 40 V a c 45 65 AZ OF 2 Unit Code number of the unit acc table 4 XX Version Standald es 00 special ze Renee XX CuUstomMm Made maracaibo 99 Acceptance tests without extra additional requirements 8 with an extra quality inspection certificate 7 to customers X After agreeing with the manufacturer 22 Code of the highlighted unit without unit Table 4 V A mV KV MA mA KA MA F K Hz Q kQ Ah m s rev um ros mm rom cm rph m m h km km h imp 1 5 1 After agreeing with the manufacturer on order 23 ORDERING EXAMPLES Example 1 The code N20 9 1 01 00 8 means N20 digital panel meter 9 input 10 V 1 supply voltage 85 253 a c d c 01 displayed unit V 00 standard execution 8 without an extra additional quality inspection certificate Example 2 The code N20 5 2 38 99 8 des
8. value In case of an error occurrence or an overflow of the range value a mes sage described in the section 6 will be displayed on the display Overflows of the measuring range are additionally signaled by the actual value signal index g 5 3 Meter Configuration by Means of the LPCon Program The LPCon program is destined to configure the N20 meter One must connect the meter to the PC computer through the PD14 programmer and after choosing the menu Options gt Connection configuration configure the connection we choose for the N20 meter the address 1 baud rate 9600 kb s RTU 8N2 mode timeout 1000 ms and the suitable COM port under which the PD14 programmer controller has been installed CAUTION One must carry out the programming of meter parameters when measuring circuits are switched off Configurator File Device Parameters Options Language Help F Options Polski Baud rate Timeout ms 9600 y fi 000 Transmission mode Address RTU 8N2 y 2 OK COM11 RTU 82 9600 1000ms a 2 2 Fig 7 Configuration of the connection with the N20 meter 10 After the connection configuration one must choose Device gt Meters gt N20 from the menu and next click the icon Readout in order to read out all parameters Parameters can be also read out individually in each group by clicking the Apply button After choosing the group Display following elements are
9. DIGITAL PANEL METER N20 type USER S MANUAL Contents 1 APPLICATION AND METER 5 2 METER SET 6 3 BASIC REQUIREMENTS OPERATIONAL 5 6 4 INSTALLATION u 7 5 SERVI Escutia a aia 9 0 ERROR CODES seem 18 7 TESHNICALIDATA iii 19 8 EXECUTION CODES 22 9 MAINTENANCE AND 26 1 APPLICATION AND METER DESIGN The N20 meter is a digital programmable panel instrument destined for measurements of d c voltages or d c currents unipolar or bipolar temperature through thermocouples J K and Pt100 resistance thermometers The readout field is a LED display which enables the exposition of results in red green or orange colours The LPCon program is destined for the configuration of the N20 meter The N20 meter must be connected to the PC computer through a PD14 programmer Following parameters can be reprogrammed display colour individually in three intervals thresholds of displayed overflows display precision of the result decimal point highlight of the unit automatic or manual compensation temperature of ends in measurements with thermocouples or wire resistance in Pt100 measurements averaging time of the measurement recalculation of
10. Window view of the measurement parameter configuration 5 3 2 Setting of Alarm Parameters After choosing the group Alarm Configuration following elements are possible to be configured a alarm 1 b alarm 2 Both alarms are working independently and each of them has 6 working modes n on n off on off hon and hoff which are presented on the fig 10 Alarm thresholds Aoff and Aon are set in values of the measured quantity taking into consideration the individual characteristic In manufacturing conditions both alarms are set on the n on mode The exemplary configuration of alarms 1 and 2 is presented on the fig 11 14 Output enabled Output disabled Measured value b n off Alarm output Output enabled Output disabled Aoff Aon Measured value Alarm output 1 Output enabled 0 Output Output disabled disabled Aoff Aon Measured value d off Alarm output 1 Output Output enabled enabled 0 SA Output disabled Aoff Aon Measured value Fig 10 Alarm types a n on b n off c on d off Remaining types of the alarm h on always switched on h off always switched off The delay time concerns both the alarm switching on and switching off 15 Fig 11 View of the alarm configuration window Alarmi Alarm working mode Upper value of alarm switching Aor Lower value of alarm switching Aol
11. cription means N20 digital panel meter 5 current input 4 20 mA 2 supply voltage 20 40 V a c d c 38 displayed unit 99 custom made execution with the detailed description like in the table 5 below 8 without an extra additional quality inspection certificate Table 5 Manual compensation value 24 Individual characteristic Parameter a of individual characteristic Parameter b of individual characteristic a Operation kind of alarm output 1 Upper value of alarm 1 switching Aon Lower value of alarm 1 switching Aoff Delay of the alarm 1 switching time Operation kind of alarm output 2 Caution When ordering a meter with parameters different than standard one must give values of ALL parameters 25 9 MAINTENANCE AND GUARANTEE The N20 digital panel meter does not require any periodical mainte nance In case of some incorrect operations 1 From the Shipping Date During the period Given in the Annexed Guarantee Card One should take the meter down from the installation and return it to the Manufacturer s Quality Control Dept If the unit has been used in compliance with the instructions the Manufacturer guarantees to repair it free of charge 2 After Guarantee Period One should turn over the meter to repair it in a certified service workshop The disassembling of the housing causes the cancellation of the granted guarantee Our policy is one of continuous
12. easured measurements is displayed The measurement of a value beyond the measuring range causes the display of overflow and the start to count correct measurements from the beginning The time is set on 1 s by the manufacturer Table 1 Averaging Number of time averaging time Updating of displayed values every 0 5 s every 0 5 s every 0 5 every 0 5 S every 0 5 5 every 0 5 S every 0 5 58 thresholds of displayed overflows one can narrow limits beyond which overflows will be displayed taking into consideration the individual characteristic When the measured value is beyond 0 110 of the rated value e g for the 10 V execution it is the range 1 11 V V the overflow is displayed In manufacturing conditions the range 19999 99999 is set d switching the individual characteristic on In manufacturing conditions the characteristic is switched off An example of configuration is given below for e g operation of the N20 meter when choosing the kilovolt unit the result is divided by 1000 After pressing the Apply button parameters a and b of the straight line equation are written in the meter 13 Averaging tme Lead resistance Hand 0 00 ohm lis Upper exceeding 99999 0000 Lower exceeding 1 9999 0000 e Switch on individual characteristic Individual charactenstic the inpu 1 o 71 fo oo Y2 i Fig 9
13. enabled 1d 6 Configurator N20 File Device Parameters Options Language Help Open Save 4 parameters Polski Exit Display colour of measured value Measurement settings Configuration of alarms Upper colour Measured values red green orange bout N20 meter Middle colour ted green orange Lower colour red green orange Upper threshold of display colour change KpH Lower threshold of display colour change KpL Decimal point Refresh Apply com RTU 8N2 9600 1000ms a 2 No answer 2 Fig 8 Window view of the display parameter configuration 5 3 1 Setting of Display Parameters After choosing the group Measurement settings following elements are possible to be configured a Automatic compensation of terminal temperatures in the version with thermocouple measurement or resistance of wires for the version with Pt100 measurements The switching of the automatic compensation off enables to give terminal temperature values or the wire resistance used in calculations As the resistance one must give the sum of both wires At the beginning the compensation is switched by the manufacturer on 12 b Averaging time till the time to obtain the required number of correct measurements according to the table 1 the actual value from 1 measurement is displayed After measuring a definite number of measurements the arithmetic mean of m
14. ore switching the meter on one must check the correctness of connection to the network The programming of meter parameters must be carried out when measuring circuits are switched off Before removing the meter housing one must switch the supply off and disconnect measuring circuits The removal of the meter housing during the guarantee contract period may cause its cancellation The meter is destined to be installed and used in industrial electromagnetic environment conditions One must remember that in the building installation a switch or a circuit breaker should be installed This switch should be located near the device easy accessible by the operator and suitably marked 4 INSTALLATION The meter has separable strips with screw terminals which enable the connection of external wires of 2 5 2 One must prepare a hole of 92 0 6 x 45 0 6 mm in the panel which the thickness should not exceed 6 mm The meter must be introduced from the panel front with disconnected supply voltage Before the insertion into the panel one must check the correct placement of the seal After the meter insertion into the hole fix the meter by means of the clamps fig 2 48 7 max64 Fig 3 Meter overall dimensions 4 1 Connection Diagrams 111100 Measuring Configu
15. ow of the 19999 99999 99999 measurement Lower overflow of the 19999 99999 19999 measurement Individual characteristic characteristic switched off switched on off switched on switched off off Parameter a of the individual 19999 99999 1 characteristic Parameter b of the individual 19999 99999 characteristic 17 Action mode of the alarm output 1 9 Of NEON Upper value of the alarm 1 105 of rated value Un switching Aon 19929 93999 In or 200 C Lower value of the alarm 1 100 of rated value Un switching Aoff In or 100 C Delay of the alarm 1 switching 120 time Action mode of the alarm output 2 9 al Neon Upper value of the alarm 2 105 of rated value Un switching Aon In 200 C Lower value of the alarm 2 100 of rated value Un switching Aoff id In or 100 C Delay of the alarm 2 switching 120 time _ 6 ERROR CODES After connecting the meter to the network messages about errors may appear Causes of errors are presented below Overflow of the upper value of the programmed indica range In option with Pt100 it also signals the incorrect connection of the wire to the terminal 4 Be Overflow of the lower value of the programmed indica tion range ErrCA Loss of meter calibration values In such a case one must contact an authorized service workshop ErrEE Incorrect values in meter configuration
16. ration S q 0 signals through PD14 lt lt 24 30 Supply gt Supply outputs of external transducer Fig 4 Electrical connections of the N20 meter Resistance thermometer RTD Resistance thermometer RTD in a two wire system with manual in a three wire system with automatic compensation compensation Current input Thermocouple J K Voltage input Fig 5 Connections of measurement inputs The supply must be connected by a two wire cable of a suitable wire diameter ensuring its protection by means of an installation cut out 8 5 SERVICE 5 1 Display Description Measured Highlighted value unit Alarm indexes _ Indexes of actual value displaying Fig 6 Frontal panel 5 2 Messages after the Supply Connection After connecting the supply the meter displays the L meter name where is the letter marking the execution U voltage measurement I current measurement measurement of Pt100 temperature measurement of the temperature by thermocouples 5 custom made execution Next the program version is displayed in the shape r x xx where x xx is the number of the actual program version or the number of the custom made execution Till the time to obtain the required number of correct measurements acc to the table 1 the actual value from the measurement 1 is displayed signaled by the highlighted index of the actual
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