DIGITAL PANEL METER N20Z TYPE
Contents
1. 19999 Individual characteristic enabled Parameter a of individual characteristic 0 1 Parameter b of individual characteristic 0 Operation kind of alarm output 1 on Upper value of alarm 1 switching Aon 40 00 Lower value of alarm 1 switching Aoff 0 00 Delay of the alarm 1 switching time 0 second Operation kind of alarm output 2 n on Upper value of alarm 2 switching Aon 44 00 Lower value of alarm 2 switching Aoff 40 00 0 second 25 9 MAINTENANCE AND GUARANTEE The N20Z digital panel meter does not require any periodical mainte nance In case of some incorrect operations 1 In the period of 12 months from the date of purchase 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 warrants to repair it free of charge 2 After the guarantee period One should turn over the meter to repair it in a certified service workshop The disassembling of the housing causes the cancella tion of the granted guarantee Our policy is one of continuous 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 LUMEL Lubuskie Zak ady Aparat w Elektrycznych LUMEL S A ul Sulechowska 1 65 022 Zielona G ra Poland Tel2. MA C F K i Hz n x Ah n rev i rps n rpm E 0 1 2 3 4 15 6 7 8 9 rph m h O km h N imp W 1 After agree ing with the manufacturer on order 23 Ordering examples Example 1 The code N20Z 3 1 01 00 8 means N20Z panel digital meter 3 with a 400 V a c input 1 supply voltage 85 253 a c 45 65 Hz or d c 01 displayed unit V 00 standard execution 8 without an extra quality inspection certificate Example 2 The code N20Z 3 2 04 99 8 description means N20Z panel digital meter 3 with a 400 V a c input 2 supply voltage 20 40 a c 45 65 Hz or d c 04 displayed unit KV 99 custom made execution with the description like in the table 5 below 8 without an extra quality inspection certificate Table 5 Parameter Range value Colour of displayed measured upper value red Colour of displayed measured middle value green Colour of displayed measured lower value orange Upper threshold KpH 44 00 Lower threshold KpL 40 00 Decimal point 000 00 Highlight of measured value enabled Input type AC 24 Averaging time 5s Delay of the alarm 2 switching time Overflow of upper measurement 99999 Overflow of lower measurement
3. 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 N20Z 07
4. DIGITAL PANEL METER N20Z TYPE USER S MANUAL Contents soo c R APPLICATION and METER DESIGN 5 METER SET oo ii dad 5 BASIC REQUIREMENTS OPERATIONAL SAFETY 6 INSTALLATION lu dt 7 P SERVICE 2 otrora 9 4 JERROR GODES ee 19 gt TEGHNICAL DATA 4 9 enge 19 ORDER CODES gt ul 48444805500 R D niinniin AO PZG ROWE 22 MAINTENANCE and GUARANTEE 26 1 APPLICATION and METER DESIGN The N20Z meter is a digital programmable panel instrument destined for measurements of a c voltages a c currents or frequency The readout display is a LED display which enables the exposition of results in red green or orange colour The LPCon program is destined for the configuration of the N20Z meter The meter must be connected with the PC computer through a PD14 converter Parameters which can be reprogrammed are as follows display colour individually in three intervals thresholds of displayed overflows display precision of the result decimal point highlight of the unit kind of the measured signal a c or a c d c True RMS averaging time of the measurement recounting of indications individual characteristic two alarms of OC type operating in six working modes The switching of the output alarm on is signaled by th
5. e highlight of the triangular alarm index at the left side of the display for the suitable alarm digit The highlight colour is always different from the colour of the displayed measured value The protection level from the frontal side is IP 65 Meter overall dimensions 96 x 48 x 64 mm including terminals 2 METER SET The set is composed of s IN2OZ Melia 1 pc Users manual esteis 1 pc Guarantee 1 Clamps to fix the panel 4 pcs When unpacking the meter please check whether the type and execution code on the data plate correspond to the order 3 BASIC REQUIREMENTS OPERATIONAL SAFETY In the safety service scope the meter meets the requirements of the EN 61010 1 standard Observations concerning the operational safety N e 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 e Before switching the meter on one must check the correctness of connections to the network e Do not connect the meter to the network through an autotransformer 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 fulfills requiremen
6. ecimal point COM6 RTU 8N2 9600 1000ms a 1 Com port initialization error Fig 7 View of the window of display parameter configuration 5 3 2 Setting of measurement parameters After choosing the group measurement parameters following ele ments are possible for the configuration a kind of input a c measurement a c d c measurement True RMS the a c measurement is set by the manufacturer 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 measured measurements is displayed 12 Successive measurements are added under the principle of walking window i e the earliest measurement is rejected and at its place is set the measured lately 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 averaging Updating of displayed values time measurements duration of 1 measurements 0 5 s 1 every 0 5 s 1s 2 every 0 5 s 3s 6 every 0 5 s 5s 10 every 0 5 s 10s 20 every 0 5 s 15s 30 every 0 5 s 30 s 60 every 0 5 s 1 min 100 every 0 6 s 2 min 100 every 1 21 s 5 min 100 every 3s 7 min 100 every 4 2 s 12 mi
7. eristic Action mode of the alarm n on n off on off h on n on UI off f output 1 h off id Upper value of the alarm 11096 of rated value 1 switching Aon 19999 99999 Un In or 51 Hz Lower value of the alarm 1 switching Aof 19999 99999 100 of rated value Un In or 49 Hz Delay of the alarm 1 switching time 0 120 0 second Action mode of the alarm n on n off on off h on n on off f output 2 h off Upper value of the alarm 2 110 of rated value switching Aon o Un In or51 Hz Lower value of the alarm 2 100 of rated value switching Aof 19999 99999 Un In or 49 Hz 18 6 ERROR CODES After connecting the meter to the network messages about errors may appears Causes of errors are presented below Overflow of the upper value of t REGA indication range indication range he programmed Overflow of the lower value of the programmed ErrCA Loss of meter calibration values In such a case one must contact an authorized service workshop ErrEE nappropriate values in meter configuration data One LPCon program 7 TECHNICAL DATA must set up meter parameters again by means of the Measuring range INPUTS Measuring range of voltage Un 1 100 120 V 2 5 250 300 V input resistance gt 2 MQ 4 400 480 V Measuring range of current In 0 01 1 1 2 A input res
8. istance 50 mQ 0 05 5 6 input resistance 10 Frequency measusurement 20 500 Hz 10 10 in voltage range 24 480 V input resistance gt 2 MQ 19 Preheating time Intrinsic error at manufacturer settings voltage and current frequency 30 min 0 5 of the range 1 digit in the frequency interval 20 500 Hz 0 02 of the range 1 digit Additional errors in rated operating conditions from ambient temperature changes Averaging time 50 of the intrinsic error 10K voltage current programmable min 0 5s 1s by default frequency not programmable Alarm outputs Rated operating conditions supply voltage ambient temperature storage temperature relative air humidity working position Sustained overload capacity Short duration overload capacity 3 s voltage input current input Readout field 20 1s outputs of O C type 30 V 20 mA Passive outputs acc to EN 62053 31 85 253 V a c 45 65 Hz or d c 20 40 V a c 45 65 Hz or d c 10 23 55 C 25 85 C lt 95 condensation inadmissible any 120 Un 120 In 2 Un lt 1000 V 10 In 5 three colour LED displays digit height 14 mm colours green orange red indication range 19999 99999 Ensured protection level from frontal side Dimensions Wymiary otworu w tablicy Weight Power consumption Electromagnetic compa
9. m output 1 Output enabled 0 Output disabled gt Aoff Aon Measured value Alarm output 4 q Output enabled 0 Output Output disabled disabled gt Aoff Aon Measured value Alarm output 4 1 Output Output enabled enabled 0 Output disabled gt Aoff Aon Measured value Fig 9 Alarm types a n on b n off c on d off Remaining types of alarms h on always enabled h off always disabled 15 Both alarms are working independently and each of them has 6 working modes nor in two variants n on n off on off h on and h off which are presented on the fig 9 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 10 Alarm1 Alarm working mode n on v Upper value of alarm switching Aon ual Lower value of alarm switching 440 4 Delay of alarm switching s Alarm2 Alarm working mode 3 5 j Upper value of alarm switching Aon Lower value of alarm switching 440 Aoff e e 4 Delay of alarm switching s q Fig 10 View of the alarm configuration window 5 3 4 Measured values After choosing the group measured values following information are displayed measured value of current or voltage fre
10. n 100 every 6 s 15 min 100 every 9 1 s c thresholds of displayed overflows one can narrow limits beyond which overflows will be displayed taking into consideration the indi vidual characteristic When the measured value is beyond 0 120 of the rated value e g for the 400 V execution it is the range 0 480 V the overflow is displayed In manufacturing conditions the range 19999 99999 is set 13 d switching the individual characteristic on In manufacturing con ditions the characteristic is disabled An example of configuration is given below for e g operation of the N20Z meter when choosing the kilovolt unit KV the result is divided by 1000 After pressing the Apply push button parameters a and b of the straight line equation are written on the meter Input type Averaging time AC C AC DC li Upper exceedina 99999 0000 Lower exceeding 9999 0000 v Switch on individual characteristic Individual characteristic of the input x1 0 0000 0 0000 x2 1000 ee 2 n Calculate y 0 001 ROCH 0 0 Fig 8 View of the window of measurement parameter configuration 5 3 3 Setting of alarm parameters After choosing the group alarm configuration following elements are possible to be configured a alarm 1 b alarm 2 14 b n off c on d off Output enabled 0 Y Output disabled gt Aoff Aon Measured value Alar
11. quency kind of input execution number of the person responsible for the calibration Serial number of the meter 16 Input type Calibrator ID 5A 8 0 0000 Hz 08020002 Fig 11 View of the window of the measured value group 5 4 Manufacturer parameters Table 2 Parameter description Range value Manufacturer value Display colour of the measured upper value red green orange red U 1 f Display colour of the measured middle value red green orange orange 0 1 green f Display colour of the measured lower value red green orange green 0 1 orange f Upper threshold KpH 19999 99999 11096 of rated value Un In or 51 Hz Lower threshold KpL 19999 99999 100 of rated value Un In or 49 Hz Decimal point 00000 0000 0 000 00 00 000 0 00000 0000 0 for U f or 00 000 for I Highlight of the measured unit disabled enabled enabled 17 continuation Table 2 Input type AC AC DC AC 0 55 15 38 5 10s Averaging time 195 908 1s ging 1 min 2 min 5 min 7 min 12 min 15 min Upper overflow of the 19999 99999 99999 measurement Lower overflow of the 19999 99999 19999 measurement Individual characteristic disabled enabled disabled Parameter a of the indivi dual characteristic een 1 Parameter b of the indivi 19999 99999 0 dual charact
12. rical connections of the N20Z meter for voltage and frequency measurements E gt 1A 5A A o O 50 Configuration g z 5 through PD14 Supply OC outputs Fig 4 Electrical connections of the N20Z meter for a c current measurements 5 SERVICE 5 1 Display description Measured Highlighted value unit Alarm indexes Index displaying the current value Fig 5 frontal panel 5 2 Messages after the supply connection After connecting the supply the meter displays the 07 meter name where L is the letter marking the execution U voltage measurement l current measurement F frequency measurement 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 dis played signaled by the highlighted index of the actual value In case of an error occurrence or an overflow of the range value on the display a message described in the section 6 will be displayed Overflows of the measuring range are additionally signaled by the actual value signal index 9 5 3 Meter configuration by means of the LPCon program The LPCon program is destined to configure the N20Z meter One must connect the meter to the PC computer thro
13. t 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 110 of the rated value e g for a meter of 400 V execution they are respectively for KpL 400 V and for KpH 440 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 400 V range the measurement error is 2 V so the choice of precision with two places after the decimal point does not give more precise measurements When manufacturing for executions with voltage measurement the precision 0000 0 is set for execu tions with current measurement 00 000 c unit highlight The unit highlight can be enabled or disabled When manufacturing it is enabled 11 ji Configurator N207 Device Parameters Options Language Help GH 1554 Groups of parameters Display colour of measured value Measurement settings Upper colour Configuration of alarms Measured values ted Bi About N20Z meter KpH Middle colour C ted green orange kpt Lower colour C ted geen C orange pza Upper threshold of display 0 2270 colour change KpH Lower threshold of display colour change KpL D
14. tibility immunity against electromagnetic interference emission of electromagnetic interference Safety requirements acc to PN EN 61010 1 isolation between circuits installation category pollution degree maximal phase to earth working voltage for supply circuit for measuring input for input destined for programming altitude above sea level IP 65 acc to EN 60529 96 x 48 x 64 mm with terminals 92 06 x 45 95 mm 0 25 kg 6VA acc to EN 61000 6 2 acc to EN 61000 6 4 basic UN for 400 V execution category II 2 300 V 600 V category II 300 V cat III 50V 2000m 21 8 ORDERING CODES Execution codes of the N20Z digital meter Supply voltage 85 253 V 8 6 45 65 Hz or d e a 1 20 40 V a c 45 65 Hz or d G sss 2 Unit Code number of the unit acc table 4 XX Kind of execution EEN NCT pS A TT CUSIOM MAdE comio AAA E Ree mean AR Table 3 DIGITAL PANEL METER Nagz x x xx x lt x x_ Input opc i 1 Acceptance tests without extra additional requirements with an extra quality inspection certificate acc to customer s agreement After agreeing with the manufacturer 22 Code of the highlighted unit without unit Table 4 V A mV kV MA mA kA
15. ts related to electromagnetic compatibility in the industrial environment When connecting the supply one must remember that a switch or a circuit breaker should be installed in the building This switch should be located near the device easy accessible by the operator and suitably marked as an element switching the meter off Non authorized removal of the housing inappropriate use incorrect installation or operation creates the risk of injury to personnel or meter damage For more detailed information please study the User s Manual 4 INSTALLATION The meter has separable strips with screw terminals which enable the connection of external wires of 2 5 mm cross section In execution for current measurement the plug enables a permanent fixing to the so cket by means of screws One must prepare a hole of 92 98 x 45 06 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 insertion into the hole fix the meter by means of clamps fig 1 Fig 1 Meter fixing d 48 7 max 64 Fig 2 Overall meter dimensions 4 1 Connection diagrams L1 fr or N N O O O a gt O 100V Configuration 2 z Z 250V through PD14 O Supply 400V OC outputs Fig 3 Elect
16. ugh the PD14 programmer and after choosing the menu Options gt Connection configuration configure the connection we choose for the N20Z 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 parame ters when measuring circuits are switched off Ue Configurator ptions Polski English Connection settings Port Baud rate Timeout ms EN gt 960 1000 Transmission mode Address RTUSN2 y 1 Cancel COM6 RTU 8N2 9600 1000ms a 1 Fig 6 Configuration of the connection with the N20Z meter 10 After the connection configuration one must choose Device gt Meters gt N20Z 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 push button 5 3 1 Setting of displaying parameters After choosing the group Display following elements are possible to be configured a display colours of the measured value The displayed range is divi ded into three zones separated by KpL and KpH threshold values suitably the lower threshold KpL and the upper threshold KpH of display colour change fig 7 The colour of displayed numbers for each zone is selected from three accessible colours green oran ge and red KpL and KpH values are se
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