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Lumel NA3 Service Manual

Digital-to-analogue meter with a multicolour bargraph + serial interface
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DIGITAL-TO-ANALOGUE
METER WITH A MULTICOLOUR
BARGRAPH
+ SERIAL INTERFACE
NA3
SERvICE MANUAL
1

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Summary of Contents for Lumel NA3

  • Page 1 DIGITAL-TO-ANALOGUE METER WITH A MULTICOLOUR BARGRAPH + SERIAL INTERFACE SERvICE MANUAL...

  • Page 3: Table Of Contents

    2. SET OF THE METER ..................6 3. BASIC REQUIREMENTS, OPERATIONAL SAFETY ........6 4. INSTALLATION ....................7 5. SERVICING ....................10 6. RS-485 INTERFACE .................26 7. TECHNICAL DATA ..................43 8. BEFORE A FAILURE HAS BEEN DECLARED .........47 9. EXAMPLES OF NA3 METER PROGRAMMING ........48 10. ORDERING PROCEDURE ...............51...

  • Page 5: Application

    1. APPLICATION NA3 series meters with a multicoloured bargraph have an universal input destined to measure temperature, resistance, voltage from shunts, standard signals, d.c. voltage and d.c. current. NA3 meters can optionally have a continuous analogue output, relays, OC type (Open Collector) and digital RS-485 outputs.

  • Page 6: Set Of The Meter

    One must take note of this when the instrument is working inconsistently to the expectations. Possible consequences if disregarded ! In the security scope the NA3 meter meets the requirements of the EEC Low-Voltage directive (EN 61010 -1 issued by CENELEC). Remarks concerning the operator safety: All operations concerning installation, and commissioning as well as ...

  • Page 7: Installation

    4. INSTALLATION 4.1. Fitting Prepare a ( 22.2 x 92 ) mm hole in the panel. The thickness of the material from +0.5 +0.5 which the panel is made should be in the range 1...15 mm. The meter has screw terminal strips which enable the connection of 2.5 mm cross- section external conductors.
  • Page 8 Resistance Resistance Thermocouple thermometer in thermometer in two-wire system three-wire system 0... 60 mV voltage 2 A and 5 A voltage input 5 mA and 20 mA current input current input b/ Connection way of input signals RS-485 RS-485 + 1 relay 2 relays + 1 OC type output (open collector)
  • Page 9 NA3 meter supply d/ Connection way of the RS-485 interface Fig.3 External connections of the NA3 meter Taking into consideration electromagnetic interference it is recommended to use shielded conductors for the connection of input and output signals. The power supply must be connected by means of a two-wire conductor with a suitable cross-section ensuring its protection by means of a fuse element.

  • Page 10: Servicing

    Lower alarm threshold Escape key Acceptation Increasing value key Fig. 4 Description of the NA3 frontal plate. Key functions: - acceptation key - entry into the programming mode (hold down during ca 3 seconds), - entry into the chosen parameter level, - entry into the changing mode of the parameter value, - acceptation of the changed parameter value.
  • Page 11 - Key to increase the value - display of the minimal value (first pressure), maximal (second pressure), return to measurement (third pressure), - mowing on the preview menu or programming matrix, - change of the chosen parameter value - increasing of the value. - Escape key - entry into the menu of parameter preview (hold down ca 3 seconds), - exit from the preview menu or programming matrix,...
  • Page 13 It is possible to change meter parameters: - from the meter keyboard ..............- p. 5.1 - through RS-485 ..................- p.6. 5.1. Change of the NA3 meter parameters from the keyboard The pressure of the key during ca three seconds causes the display of the inscription alternately with the set value 0 by the manufacturer.
  • Page 15 Fig. 7.
  • Page 16 Programmable parameters of NA3 meter Table 1 Symbol on the Range of changes Parameter description display Kind of input Reesistance thermometers: - Pt100 - Pt500 pt10 - Pt1000 Thermocouples: te-j - thermocouple, type J te-h - thermocouple, type K te-n...
  • Page 17 auto Kind of compensation of sensor - automatic compensation working conditions changes: (in case of resistance thermometers and - In case of a resistance thermometer resistance measurement it requires a and resistance measurement it 3-wire line.) concerns the compensation of the 0.0...60.0C - value of the reference resistance changes of the conductor temperature for thermocouples.
  • Page 18 typb Bargraph type 0neC - „ one colour „ bargraph, :ntr - „ interval „ bargraph, sect - „ sector” bargraph, p:nt - „ point bargraph, tren -”trend” bargraph. Fig. 10 explains bargraph types. . colr Bargraph colour - bargraph switched off, - red, - green, - red + green...
  • Page 19 H_0f - manually switched off. Till the time of the alarm type change, the alarm output is being permanently switched off. Delay of the alarm operation. The 0.0... 999.9 parameter is defined in seconds, i.e. one must give the time in seconds Introduction of 0.0 causes the ope- after which the alarm will operate after ration at the moment of the alarm...
  • Page 20 :nd0 Switching off or on of the individual - characteristic switched on, linear user’s characteristic - („indivi- - characteristic switched off . dual characteristic of the analog When the characteristic is switched output”). off, the meter operates at the maximal range depending on input and range output.
  • Page 21 Manufacturer’s parameters. The pressure of the causes the writing of manufacturer’s Manufacturer’s parameters are parameters. presented in the table 2. Introduction of a new password. - 1999... 9999 Test of displays. The pressure of the key causes The test consists on a successive the test switching on.
  • Page 22 Fig. 8. Alarm types: a, b - normal, c - switched off, d - switched on...
  • Page 23 Value I_H1 on the meter input => d_Y1 on the display. Value I_H2 on the meter input => d_Y2 on the display other points of the characteristic are evaluated Value d_H1 on the display => 0_Y1 on the analogue output. Value I_H2 on the display =>...
  • Page 24 Examplary settings of the bargraph and the alarm, ex. 1 Type of Notes Curl =G (green) bargraph Curl CurH = r (red) = rG (red + green ) 0neC Value under the value :ntr Value between Value over sect p:nt Value without changes in time tren...
  • Page 25 (from one alarm) is possible. The others are automatically erased. – Max. and min. values are erased in case of following changes: input type, individual characteristic (on, off), entry of standard parameters. Standard parameters of the NA3 meter Table 2 Parameter description...

  • Page 26: Rs-485 Interface

    RS-485 converter of PD51 type is necessary or an RS-485 interface card. The way of NA3 meter connection through the PD51 converter is shown on the fig. 3d. The designation of transmission lines for the card in the PC computer depends on the card producer.
  • Page 27 Recording of a single register 16 (10 h) Recording of n-registers 17 (11 h) Identification of the slave device Note: In NA3 meters the answer response frame to the function 17 is as follows: Device Number Device Device Field depending on...
  • Page 28 Response: Check- Device Number Value from the register Value from the register Function address of bytes 1DBD (7613) 1DBE (7614) 42 8B Recording of values into the register (code 06h) The function is accessible in the publication mode. Example: recording of the register which address is 1DBDh (7613) in RTU mode. Request: Register Register...

  • Page 29: Device Type

    Report identifying devices (code 11h) in RTU mode. Example: the read-out.of data identifying the device for NA3 meter with a univer- sal input Request: Device Checksum Function address (CRC) C0 2C Response: Device Number Device Device Field depending on Check-...
  • Page 30 Example: Work in RTU mode, e.g.: Mode = RTU 8N2 (value 0x02 in case of readout/record through the interface). NA3 meter with an universal input (NA3-XXXU) Execution with a voltage analogue output: 00, No. of the software version: 1.00, Device address set on: Adr = 0 x 01,...
  • Page 31 6.5. Registers for recording and readout NA3 meter Symbol Range Description Identifier 7200 7600 Device identifier Value NA3 with universal input „U” Channel 7202 7601 0...1 No occurs number Output type 7204 7602 0...20 Input type Value Pt100 RTD Pt500 RTD...
  • Page 32 LoIn No occurs -1999... 9999 7206 7603 HiIn No occurs 7208 7604 -1999... 9999 Arithmetical function Function 7210 7605 0... 2 Value Switched off Squaring Extraction of roots Compensation of the conductor Compens. 7212 7606 -199.9... 999.9 resistance 7214 7607 0...
  • Page 33 Change of colour after exceeding the alarm threshold (Three-segment change of colour) (SEct) One-coloured bargraph, alarm markers in another colour (PInt) Increasing/decreasing trend (trEn) Colour 7232 7616 0... 7 Bargraph colour Value Bargraph off (OFF) Red (r) Green (G) Red + Green (rG) Other values are only accessible in meters with RGB diodes Blue (b)
  • Page 34 Alarm delay 7248 7624 0... 999.9 Alarm delay <Alarm No> Alarm 7250 7625 0... 1 Alarm signalling support <Alarm No> support Value Support switched off Support switched on Bargraph colour for the lower alarm CURL 7252 7626 0... 7 threshold Value Bargraph switched off (OFF) Red (r)
  • Page 35 Parameters of the analogue output X1 LED 7260 7630 - 1999... 9999 characteristic Parameters of the analogue output Y1 Out 7262 7631 - 1999... 9999 characteristic Parameters of the analogue output X2 LED 7264 7632 - 1999... 9999 characteristic Parameters of the analogue output Y2 Out 7266 7633...
  • Page 36 Interval 7280 7640 0... 99.5959 Time interval of the recording Recording 7282 7642 0... 23.5959 Time of the recording start time This parameter occurs with four places after the decimal point in format gg,mmss, where: gg - means hours, mm - means minutes, ss - means seconds In case when introducing and incorrect time, the indicator will correct it auto-...
  • Page 37 Year of the memorised 7320 7660 1970... 2038 Year of memorised value in memory value Month of the memorised 7322 7661 1... 12 Month of memorised value in memory value Day of the memorised 7324 7662 1... 31 Day of memorised value in memory value Time of the memorised...
  • Page 38 Go to the last memorised value in memory. Erase the memory Number of the memori- 7332 7666 0... 750 Number of memorised value in memory, sed value placed in the first buffer register Value Memory is empty 1... 750 Number of the memorised value Number of 7334...
  • Page 39 6.6. Registers only for readout NA3 meter Name Unit Quantity name Identifier 7000 7500 Constant identifying the device Register describing the current state of Status 1 7002 7501 the meter Register describing the current state of Status 2 7004 7502...
  • Page 40 Description of the Status 1 register Position of the decimal point 15 14 13 12 11 10 bits 0 - Lack of error 1 - Signalling of compensation error Bit-7...5 Position of the decimal point 000 - lack 001 - 000.0 010 - 00.00 011 - 0.000 100 - Auto...
  • Page 41 0 - individual characteristic switched off 1 - individual characteristic switched on Bit-1...0 Kind of output (voltage, current) 00 - lack of analogue output 01 - current 10 - voltage Bit-15. No used Description of the status 2 register Working mode and information unit...
  • Page 42 1 - on Bit-5 State of alarm 1 0 - off 1 - on Bit-4...2 Working mode and information unit 000 - interface switched off 001 - 8N1 - ASCII 010 - 7E1 - ASCII 011 - 7O1 - ASCII 100 - 8N2 - RTU 101 - 8E1 - RTU 110 - 8O1 - RTU...

  • Page 43: Technical Data

    7. TECHNICAL DATA INPUTS: Range Pt100 (-200... +850)C Pt500 (-200... +850)C Pt1000 (-200... +850)C J ( Fe-CuNi) (-30... +1100)C K (NiCr-NiAl) (-50... +1370)C N (NiCrSi-NiSi) (-100... +1300)C E (NiCr-CuNi) (-20... +850)C R (PtRh13-Pt) (0... +1760)C S (PtRh10-Pt) (0... +1760)C T (Cu-CuNi) (-50...
  • Page 44 OUTPUTS: – Analogue output galvanically isolated, with a resolution = 0,025% of the range load resistance  500  - current programmable: 0/4..20mA load resistance  500  - or voltage programmable: 0..10V - output response time 100 ms - output error 0.2 % of the range - additional error due to ambient ...
  • Page 45 - voltage input >= 3 V 10  In - current input Readout field (depending on execution): 4 seven-segment LED display, NA3-F digit height: 7 mm indication range: -1999...9999 bargraph length: 82 mm - 45 segments in three-colour execution - 25 segments in seven-colour...
  • Page 46 Bargraph resolution programmable  0.5 segment Bargraph accuracy Servicing: three keys: Ensured protection degree (EN 60529): - through the casing IP 40 - from terminal side IP 20 Dimensions: 96 x 24 x 125 mm (with terminals) Weight: < 0.3 kg Power consumption <...

  • Page 47: Before A Failure Has Been Declared

    8. BEFORE A FAILURE WILL BE DECLARED In case of incorrect symptoms please to acquaint with the table below. SYMPTOMS PROCEDURE 1. Lack of indications on the display. The Check the connection of the feeder cable. bargraph indicates nothing. 2. The time is displayed on the display, The number of measurements Cnt = 0 has been e.g.

  • Page 48: Examples Of Na3 Meter Programming

    Adr). These parameters must be the same as in the used software. 9. EXAMPLES OF NA3 METER PROGRAMMING Example 1. Programming of the individual characteristic. If we want to programme so that to the value 4.00 mA will correspond the value 0 on the display, whereas, the value 20.00 mA will correspond to the value 100,...
  • Page 49 transit on the I_H2 parameter and introduce the value 20.00  transit on the d_Y2 parameter and introduce the value 100  Example 2 Programming of an inverse individual characteristic. If we want to programme so that to the value 4.00 mA will correspond the value 120.5 on the display, and to the value 20.00 mA, the value 10.8, one must: enter into the programming mode and choose the D_P parameter responsible ...
  • Page 50 Example 5 Programming of an analogue output If we want to programme so that to the displayed value 0.00 mA for the channel 2 will correspond the value 4.00 on the analogue output, whereas to the value 20.00 mA , the value 20.00 mA, one must: enter into the programming mode, choose the IndO parameter and switch the ...

  • Page 51: Ordering Procedure

    10. ORDERING PROCEDURE Execution codes of NA3 meter (seeTable 5). Table 5. NA3 - X Meter version: with a bargraph and digital display Bargraph colour: 3-colour (R, G, R+G) 7-colour (R, G, B, R+G, R+B, G+B, R+G+B) Display colour: green...
  • Page 52 Ordering example: The code: NA3 - F T R U 0 1 1 0 00 8 means: NA3 - meter of NA3 type F - with bargraph and digital display T - 3-colour display R - red display colour U - universal input...
  • Page 56 LUMEL S.A. ul. Sulechowska 1, 65-022 Zielona Góra, POLAND tel.: +48 68 45 75 100, fax +48 68 45 75 508 www.lumel.com.pl Export department: tel.: (+48 68) 45 75 139, 45 75 233, 45 75 321, 45 75 386 fax.: (+48 68) 32 54 091...

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