PANEL MOUNTED METER USER`S MANUAL
Contents
1. 0 0 voltmeter 10 V 1 millivoltmeter 60 mV 2 milliammeter 20 mA 3 Pt100 4 J thermocouple 5 K thermocouple 23 temperature compensation of the thermocouple cold junction line resistance 0 without automatic compensation a parameter specified in the registry 4014 is included in compensation 1 automatic compensation 4001 RW ORS Relay output operating mode 0 0 H OFF disabled permanently 1 H ON enabled permanently 2 N OFF 3 N ON 4 OFF 5 0N 4002 reserved 0 4003 reserved 0 4004 Relay activation delay 0 4005 Relay deactivation delay 0 4006 Precision of the displayed values 1 0 0 1 0 0 2 0 00 3 0 000 4007 reserved 4008 reserved 4009 Enabling individual characteristic 0 0 without individual characteristic 1 individual characteristic enabled 4010 Saving parameters to the memory 0 0 do not save 1 save parameters 4011 Restoring the default parameters 0 4012 reserved 4013 RW 0 1 Enabling the automatic 1 24 4014 RW 6000 6000 The value of manual temperature compensation of the thermocouple cold junction or correction for the resistance thermometer sensor Temperature range 60 00 C 60 00 C NOTE The registry value contains a temperature x100 4015 RW 2 5 10 30 Averaging time of the 50 100 150 measurement re2. N21 meter comes standard with universal input relay output power output 24 V d c supply voltage 24 V a c d c 230 V a c d c miniUSB port for programming Version standard 00 custom made XX Language Polish B English E other X Acceptance tests without extra quality requirements 0 with quality inspection certificate acc to customer s request X ORDERING CODE EXAMPLE The code N21 00E0 means N21 N21 meter 00 standard version E English version 0 without extra quality requirements 35 LUM L EVERYTHING COUNTS LUMEL S A ul S ubicka 1 65 127 Zielona G ra POLAND tel 48 68 45 75 100 fax 48 68 45 75 508 www lumel com pl e mail lumel lumel com pl Export department tel 48 68 45 75 139 45 75 233 45 75 321 45 75 386 fax 48 68 32 54091 e mail export lumel com pl N21 09B
3. a line resistance for Pt100 sensor Manual compensation It is possible to set a temperature value which will be corrected by the measurement result if an automatic temperature compensation of the thermocouple cold junction or a line 60 00 60 00 C resistance is disabled 0 00 15 Enabling the value of the input signal Without individual Without Enabling ACE characteristic individual individual to the displayed value characteristic according to the linear characte nae Characteristic enabled ristic characteristic of user defined coefficients Individual User defined first characteristic Point of the individual _g9999 9 g9999 9 a characteristic Y1 0 X1 Y1 Fi igure 11 Individual User defined second 99999 9 99999 9 X2 1 characteristic point of the individual Y2 1 X2 Y2 characteristic Figure 11 The lower The measured value 99999 9 99999 9 0 bargraph representing 0 of display range bargraph display indications Point 5 3 4 The upper The measured value 99999 9 99999 9 0 bargraph representing 100 display range of bargraph display indications Point 5 3 4 Measuring Preview of the current Figure 13 values measuring values Output Configuration The method of triggering the alarm output depending on the input signal H OFF Relay output alarm thresholds H ON operating The H OFF mode N OFF H OFF mode disables the output N ON permanentl
4. play precision Overflow of the upper value range or of the maximum number of digits in the display field too high dis play precision Saving the configuration to non volatile memory of the meter is in progress Failure of non volatile memory of the me ter Attempt to restore the default values Please contact the service on a recurrent problem Restoring manufacturer settings Failure in communication with the mea suring transducer of the meter Please contact the service Update Meter s software update is in progress 8 SOFTWARE UPDATE The features implemented in the N21 meter enable to upgrade its software using a PC with e Con software installed Free eCon softwa re and the update files are available at the website www lumel com pl Updating is done via the USB interface of the N21 meter LUMEL UPDATER 4 20 0 OK 103511 Figure 17 The program window for updating the software 29 Caution Software update automatically resets meter settings to manufacturer settings so it is recommended to save meter settings using e Con software before upgrading When you start an e Con program Figure 7 set the communication parameters in the Communication field at the left side of e Con window and then click connect button The meter will be automatically recognized The parameters should be read and saved to a file for later restoration
5. using the N21 configuration field Next select Update firmware from the menu at the top The window of the LUMEL UPDATER LU program will open Figure 18 Using this program select the correct port on which the N21 meter was installed and press the Connect button Information about the progress of the update process are available in the Messages window The message Port opened is displayed when the port is open properly The meter will display the message UPDATE and the progress bar will appear The LU program will display information about the software version and the version of the bootloader when the meter is properly detected At this point you should select the correct meter upgrade file by pressing the If the correct file is selected the LU program LU will display a message File opened Press Send button The LU program shows a progress bar and the meter displays the message Update during the software update The meter restarts restores the manufacturer settings and goes to normal operation after the upgrade process is successfully completed Information Done and duration of the update will appear in the LU program window In the next step you can restore previously saved settings of the meter using e Con software Caution Turning meter supply off during upgrade process may result in permanent damage 30 9 TECHNICAL DATA Measuring ranges Measuring ranges of Un voltage 72 mV 60 mV 60 mV 72 mV inp
6. values representing 100 of bargraph indications Both of these values can be positive and negative 19 Exceeding the bargraph indications range is indicated by a flashing bargraph When the display range is equal to zero the same value for upper and lower indication default value the bargraph takes the symmetrical form and indicates positive and negative values The maximum displayed values are then dependent on the currently selected measuring input and are as follows input 10 V 100 for 10 V 100 for 10 V input 60 mV 100 for 60 mV 100 for 60 mV input 20 mA 100 for 20 mA 100 for 20 mA input PT100 100 for 200 C 100 for 850 C thermocouple input J 100 for 210 C 100 for 1200 C thermocouple input K 100 for 270 C 100 for 1372 C It should be noted that in such arrangement of the temperature inputs the bargraph is not linear in it the entire range of its indications and is only linear in sections of indications for both positive and negative indications Examples of settings a PT100 temperature input the measured value for 0 0 to 100 100 we obtain the bargraph display range from 0 C to 100 C excess of 100 C is indicated by blinking of the bargraph Figure 12a b Input 10 V the measured value for 0 0 for 100 0 we obtain the symmetric bar graph indication of the range from 100 to 10 V to 100 for 10 V Fig 12b
7. write and export settings 13 Communication Port Miernik Meter N21 COM10 M Device ID 1 Baud rate 9600 v Mode RTU 8N2 Timeout 5000 ms o he f 5 fth dul Connect Use the factory settings of the module disconnect Status port disconnected Device unknown Serial port Modbus TCP Figure 9 Establishing connection to N21 meter 5 3 1 Configuration parameters After establishing a connection there are configuration parameters of the meter on the right side of the program window 14 Table 1 Range Parameter a Range of parameter of Parameter description name change parameter change Input Configuration Measuring Type and range Voltmeter 10 V Voltmeter input of the input signal Millivoltmeter 60 mV 10V Milliarmmeter 20 mA Pt100 thermocouple J thermocouple K of the values Defining units Precision displayed 0 TDesigning a pictogram representing the graphical editor can be uploaded to a file Figure 14 Choice of precision of the displayed values Ranges 99999 99999 0 0 9999 9 9999 9 0 00 999 99 999 99 0 000 99 999 99 999 Designed pictogram the meter or saved to symbol of measuring value unit using the Figure 14 0 0 Averaging time Averaging time of the measurement results Automatic 0 5 s Automatic compensation temperature compensation of the thermocouple cold junctions or
8. 6 32 bit register address Register type Description 4500 RW Bit data of an image of the symbol representing the unit of the measuring value as shown in Figure 14 and 15 Lines 1 0 4501 RW Lines 3 2 RW RW i RW 4526 RW Lines 53 52 Ed i 2 oli g i 4 5 18 19 Ba 35 24 e n 7 Figure 15 Designing an image of measuring value unit 27 The image of measuring value unit takes a display area of 18x24 points The area is divided into 3 rows and each row in the 18 vertical lines with 8 points each Each line corresponds to one byte of data in which the value 1 in a given field corresponds to turning on a given point on the display and the value 0 turning off a given point The definition of the whole image creates a string of 54 bytes in 16 bit 4500 registers of the meter The values of the 8 bit lines in the 16 bit registers are arranged as shown in Figure 16 MSB LSB Aj m Reg4500 N 15 14 13 12 11 10 9 8 i 6 5 4 3 2 1 o Ps Line 1 N 2 Line 0 N 2 N 0 26 Figure 16 Setting a line value in the 16 bit register 7 ERROR CODES After switching the meter on the error messages may be displayed Following list shows reasons of errors Overflow of the upper value range or of the maximum number of digits in the display field too high dis
9. LUM L EVERYTHING COUNTS PANEL MOUNTED METER N21 USER S MANUAL CE Contents R N APPLICATION AND METER DESIGN seeauusaaanuaee 5 ALRI RAEC 6 BASIC REQUIREMENTS OPERATIONAL SAFETY 6 INSTALLATION 4 1 Mounting 4 2 External Connection Diagrams ccceeceeseeeeeeeeeeeeeeeeeee 9 EOE RV IGE E E E 11 9 1 Display GeSCriptiOn sss w oaza WA cevsssecscsevesssesceandvees 5 2 Power on status indication 5 3 Device configuration using e Con program 1 11 2112 12 5 3 1 Configuration parameters ccscceceeeceeeeseeeeeeeneeeneeens 14 5 3 2 Alarm output operating modeS eaaeaaeaanaane 18 5 3 3 Individual characteristic csseseeeeeeeeeeeeeeeeeeeeneeeneeens 19 5 3 4 BArgraph configuration 5 3 5 Preview of the measuring values eauaanaan 21 5 3 6 Editor of the measuring unit e aeaae aan aan aaeaanee 21 CONFIGURATION INTERFACE eeeeuuaeaee sa caeeecaacecc 22 6 1 USB Interface list of parameters aueaaauaaauaaaa 22 6 2 Map of N21 meter registers TERROR CODES sce www woo ao aS adw ADR W Pd sen cocccasseers renan 8 50FTWARE UPDATE lt cnsssviecs oo esticeneedoasseascencectsscsteconedestevese 29 9 TECHNICAL DATA scisiccscccicsceccccc sosseeacocedoccsssssceocescsess
10. a Figure 12 Bargraph configuration 20 5 3 5 Preview of the measuring values Measured values x Stop refresh float precision 2 Parameter Value Displayed value 21 99 z Measured value 21 99 Figure 13 CJC temperature 31 15 Preview CJC temperature with correction 30 15 of the Value of the AC transducer 16051 measuring Average value of the transducer 16051 A values 5 3 6 Editor of the measuring value unit Defining units x clearin PERS Re gt X 4 cor l lt save to file editing gt area readout from file inversion Selection ET of the ER pre defined El O units oo 20 Figure 14 Editor eaves pea 4 of the measuring value unit 21 6 CONFIGURATION INTERFACE 6 1 USB Interface list of parameters The USB interface is intended only for the configuration of the meter e identifier 213 0xD5 meter address 1 baud rate 9 6 kbit s operating mode Modbus RTU transmission mode 8N2 maximum response time 100 ms implemented functions 03 readout of registers 04 readout of input registers 06 one register writing 16 registers writing 17 device identification Broadcast address 253 6 2 Map of N21 meter registers In the N21 meter data are placed in 16 and 32 bit registers Process variables and meter parameters are placed in the address area of registers in a way depended on the variable value type Bits in 16 bit registers are numbered from the least significant
11. ersasazsesvere 31 AOORDERING CODE zy sc nz z O EAT a 35 1 APPLICATION AND METER DESIGN The N21 meter is a digital programmable panel mounted instrument designed to measure d c voltages or d c currents unipolar or bipolar temperature with use of thermocouples J Fe CuNi K NiCr NiAl and Pt100 resistance thermometers The readout field is an OLED graphic display with a resolution of 32x128 points The eCon program is designed for the configuration of the N21 meter The meter should be connected to a PC via a miniUSB connector located on the rear of the meter Following parameters can be set measuring input display precision of the result decimal point e relay output operating mode e thresholds triggering the relay output e time delays of the relay output triggering e individual characteristic for measuring signal automatic or manual temperature compensation of cold junctions averaging time of the measurement e user defined units of measured signal e display language e bargraph configuration Meter output signals are isolated from the input signals and power supply 2 gt Figure 1 View of the meter 2 METER SET Complete set of the meter includes NZ MEEN cada i AA 1pc clamps to fix in the panel 4 pcs Sales wa aint LO EYE dA hie 1pc USES MANUAall tira nai 1pc a guarante Card icc cree cities mens 1 pc Accessories For the N21 meter you ca
12. gt AL_L AL_H Measured value gt AL_L AL_H Measured value Figure 10 Relay output operating modes 18 5 3 3 Individual characteristic The individual characteristic allows the conversion of the measuring value converted by an optional activated individual characteri stic to the displayed value It is used for imaging the measurements of non electrical quantities using non electrical transducers to the standard quantities The conversion is done by an approximation of a straight line passing through the characteristic parameters points Fig 11 value displayed A Y2 gt XI X2 measuring value Figure 11 Individual characteristic Example Pressure transducer with a range of 0 500 Pa and 0 10 V voltage output is connected to the input voltage range of 10 V Set the individual characteristic as follows X1 0 lower value of the measuring range of the N21 meter X2 10 upper value of the measuring range of the N21 meter X1 0 lower value of the measuring range of the pressure transducer X2 500 upper value of the measuring range of the pressure transducer After enabling the individual characteristic the meter indicates directly the value in Pa 5 3 4 Bargraph configuration The configuration allows for the adjustment of the bargraph indications to the user s preferences The bargraph is configured by setting the measured values representing 0 of bargraph indications and the measured
13. lectrical connections of the N21 meter ZN Comment concerning safety The meter is provided with a universal power supply that allows operation in a wide range of input voltages 22 253V a c 20 300V d c Life threatening voltage also appears at the terminal 12 of the meter in the case of the use of the input terminals 13 14 1 2 3 4 51 6 thermocouple J K voltage input 60mV ija slale 2 sfa s Resistance thermometer Resistance thermometer in a 2 wire system in a 3 wire system z 3 4 5 6 current input 20mA voltage input 10V Figure 5 Connections of measuring signals N 10 5 OPERATION 5 1 Display description measuring user defined unit value USB cable connection indicator alarm indicator Figure 6 Front panel 5 2 Power on status indication The display shows information about the manufacturer device type and software version after switching the supply on Then the meter starts to show the measuring values according to the current configuration 17 5 3 Device configuration using e Con program Switching of the individual characteristic Individual characteristics 1 11 Individual characteristics X2 2 Bargraph lower threshold GU 20000 20000 Bargraph upper threshold GT 20000 20000 Measured values Output configu Work mode of relay o
14. mission protocol Modbus RTU response time 100 ms 2 1 kV d c 3 2 kV d c 0 7 kV d c Protection grade IP from frontal side IP 65 for terminals IP 20 Protection grade IK IK 06 Power input in the supply circuit lt 3VA Weight lt 0 2 kg Overall dimensions Rated operating conditions supply voltage ambient temperature storage temperature humidity external magnetic field sustained overload capacity short term overload 1 s sensor inputs voltage inputs current inputs requirements for overcurrent protection for supply circuit working position 96 x 48 x 64 mm 22 60 V a c 50 400 Hz 20 60 V d c terminals 12 13 60 253 V a c 40 400 Hz 60 300 V d c terminals 13 14 10 23 55 C 25 85 C lt 95 condensation not permissible 0 40 400 A m measurement of voltage current 110 10 V 2 Un 10 In characteristic B horizontal 33 Readout field OLED display 32x128 points amber Electromagnetic compatibility noise immunity acc to EN 61000 6 2 noise emission acc to EN 61000 6 4 Safety requirements according to EN 61010 1 standard e isolation between circuits basic e installation category III pollution grade 2 maximum phase to earth operating voltage for supply circuit 300 V for measuring input 50 V for remaining circuits 50 V e altitude a s l lt 2000 m 34 10 ORDERING CODE The
15. n order USB CABLE A miniUSB B 1m BLACK Order code 20 069 00 00150 3 BASIC REQUIREMENTS OPERATIONAL SAFETY The symbols in the manual mean Warning important to be aware of before connecting the device A Warning of potentially hazardous situations Especially Failure to follow the directions marked by this symbol could result in serious injuries of the personnel and dama ge of the device Caution Useful notes The notes should facilitate the operation of the device Should pay attention if the device is not working as expected Possible consequences in case of ignoring informa tion In terms of operational safety the meter meets the requirements of the EN 61010 1 standard Comments concerning safety Assembly and installation of the electrical connections should be made only by people authorized to perform assembly of electric devices The person installing the meter is responsible for ensuring the safety of the implemented system Always check the connections before turning the meter on Opening the meter housing gives access to the live parts The supply must be switched off and the measuring circuits discon nected before removing the meter housing Removal of the meter housing cover during the warranty period voids the warranty The meter is designed to be installed and used in the industrial electromagnetic environment conditions The building installation should have a switch
16. or a circuit breaker installed This switch should be located near the device easy accessible by the operator and suitably marked In case of damage the meter can to repaired only by manufacturer s authorized service Check the correct operation of the meter before it is used for mea suring after a repair Connection and or using the meter in a way which is not compliant with the user s manual may cause deterioration of the degree of protection 4 INSTALLATION 4 1 Mounting The N21 meter has separable strips with the screw terminals which enable the connection of external supply wires of 2 5 mm and signal wires of 1 5 mm You must prepare a 92 x 45 6 mm cut out in the panel The thi ckness of the panel material should not exceed 6 mm The meter should be mounted from the panel front with disconnected supply volta ge Check the correct position of the seal before placing the meter into the panel When the panel is inserted in the slot mount it in the panel with the mounting brackets Fig 2 Figure 3 Meter dimensions 4 2 External Connection Diagrams f 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Q Q Q Q Q Q e Q Q USB i measurement signals alarm 24V N 230V configuration 24V dc supply 30 mA max supply of object transducers Figure 4 E
17. sults 200 NOTE The registry value contains time in seconds x10 4016 RW 0 1 Language of messages 0 POL 1 ENG 4017 R Serial number MSB 4018 R Serial number LSB 4019 R Software version 4020 R Custom made version Table 4 16 bit 32 bit 6 Register RR register register GEE Description address address yP 6000 7000 7500 R Displayed value 6002 7002 7501 R Measuring value 6004 7004 7502 R Temperature of thermocouple cold junction 6006 7006 1503 R temperature orm the thermocouple cold junction with a correction 6008 7008 7504 R Value from AC converter 25 6010 7010 7505 R Averaged value from AD converter 6012 7012 7506 R reserved 6014 7014 7507 R reserved 6016 7016 7508 R reserved 6018 7018 7509 R reserved When lower limit is exceeded the value 99999 is set Conversely when upper limit is exceeded the value 99999 is set Table 5 32 bit Register register a gt Description address yP 8012 RW Individual characteristic parameter X1 8013 RW Individual characteristic parameter X2 8014 RW Individual characteristic parameter Y1 8015 RW Individual characteristic parameter Y2 8016 RW Measured value representing 0 of the bargraph indication 8017 RW Measured value representing 100 of the bargraph indication 8018 RW Lower threshold of alarm output triggering 8019 RW Upper threshold of alarm output triggering 26 Table
18. to the most signifi cant bit b0 b15 The 32 bit registers contain float numbers compliant with IEEE 754 standard Range of the registers is shown in Table 2 The 16 bit registers are shown in Table 3 The 32 bit registers with their equivalent registers 2x16 bits are shown in Table 4 The register addresses shown in the tables are their physical addresses 22 Table 2 Address 7 range Value type Description 4000 4020 Integer Meter configuration Value set in the 16 bit 16 bits register 4500 4526 Integer User defined graphical icon representing 16 bits the unit of the measuring value 6000 6018 Float Value is set in the two following 16 bit 2x16 bits registers Registers contain exactly the the byte order same data as 32 bit registers of 7500 of 3210 range Read only registers 7000 7018 Float Value is set in the two following 16 bit 2x16 bits registers Registers contain exactly the byte order the same data as 32 bit registers of 7500 of 1032 range Read only registers 7500 7509 Float Value set in the 32 bit register Read only 32 bits registers 8012 8019 Float The coefficients of the individual 32 bits characteristic for the measuring value conversion configuration of the bargraph indications range and triggering thresholds of the alarm output Table 3 _ n 2 o 9 5E F Range Description S SEA o 4000 RW 0 5 Selection of the measuring input
19. ut resistance gt 200 kQ 12 V 10 V 10 V 12 V input resistance gt 1 MQ Measuring ranges of In current 24 mA 20 mA 20 mA 24 mA input resistance lt 500 1 Temperature measurement using Pt100 200 C 850 C current of the sensor lt 300 uA max resistance of wires lt 20 Q Temperature measurement using thermocouple J 50 C 1200 C Temperature measurement using thermocouple K 50 C 1370 C Max resistance the external measuring circuit voltage input 60 mV 60 mV lt 100 Q voltage input 10 V 10 V lt 100 Q thermocouples lt 100 Q Preheating time 30 minutes Basic error lt 0 1 of the range 1 digit 31 Additional errors in rated operating conditions compensation of cold junction temperature changes lt 1 C compensation of wire resistance changes e when changing wire resistance lt 10 Q lt 0 5 C e when changing wire resistance lt 20 Q lt 1 0 C from ambient temperature changes lt 0 1 Averaging time External transducers supply output Relay output Serial interfaces Test voltages supply alarm outputs measuring inputs e USB interfaces 32 of the range 10 K lt 0 5 s default 24 V 5 30 mA NO load 250 V 0 5 A number of switching 1 x 10 USB for configuration 1 1 2 0 address 1 8N2 mode baud rate 9 6 kbit s max USB cable lenght lt 3m broadcast address 253 trans
20. utput Low threshold trigger of relay output High threshold trigger of relay output S 20000 20000 Delay of the relay switch ON GEE o 360051 Delay of the relay switch OFF GEM o 3600 s Writing parameters to the memory Language Set default settings Figure 7 e Con program window 12 The eCon program designed for configuration of the N21 meter is available at the manufacturer s website www lumel com pl The meter should be connected to a PC via USB cable The drivers are also available on the manufacturer s website After drivers installation a new serial port appear When the eCon program starts select the port on which the device is installed in the area Communication set the trans mission parameters baud rate 9600 mode RTU 8N2 and then click the icon connect Before changing a configuration you should read and save the current configuration for future restore the settings You can save the parameters to a file read from a file as well as export the configuration to a pdf file using the eCon menu Fig 8 N21 configuration Serial number 0 firmware 1 06 vt By t Turn off forms validation for N21 J gt Export the configuration to a pdf file Information Saving the configuration about the meter to a file Reading the configuration from file Saving the configuration to a meter Reading the configuration from a meter Figure 8 Read
21. y H ON OFF activates the output ON permanently Other modes as shown in Figure 10 16 Low Lower threshold threshold of the input signal triggering causing the alarm 99999 9 99999 9 60 0 the relay output reaction output AL_L at Fig 10 High Upper threshold threshold of the input signal triggering causing the alarm 99999 9 99999 9 80 0 the relay output reaction output AL_H at Fig 10 Relay Relay activation delay activation relating to changes 0 3600s 0 delay of the input signal Relay deactivation Relay delay relating to deactivation noe 0 3600 s 0 changes of the input delay signal General Settings Saving Saving actually set Do not save Do not parameters parameters to the Save save to the internal non volatile memory memory Language Setting language for Polish Polish dislpayed messages English Set Restoring the meter the default default configuration parameters NOTE The button Save sends the current configuration to the device N21 and save default settings to non volatile memory In order to change not to apply after connecting and reconnecting the supply one needs to turn off the parameter Writing the parameters to the memory 17 5 3 2 Alarm output operating modes a N ON AAlarm state 1 on RR SE ee off gt AL_L AL_H Measured value b N OFF A Alarm state 4 O off AL_L AL_H Measured value a
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