Lumel N20 User Manual
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Lumel N20 User Manual

Digital panel meter
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DIGITAL PANEL METER
N20
USER'S MANUAL
1

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Summary of Contents for Lumel N20

  • Page 1 DIGITAL PANEL METER USER’S MANUAL...

  • Page 3: Table Of Contents

    Contents 1. APPLICATION AND METER DESIGN ........5 2. METER SET ................. 6 3. BASIC REQUIREMENTS, OPERATIONAL SAFETY ....6 4. INSTALLATION ................7 5. SERVICE..................9 6. ERROR CODES ................ 18 7. TECHNICAL DATA ..............19 8. EXECUTION CODES ..............22 9.

  • Page 5: Application And Meter Design

    The readout field is a LED display which enables the exposition of results in red, green or orange colours. The eCon software is destined for the configuration of the N20 meter. The N20 meter must be connected to the PC computer through a PD14 programmer.

  • Page 6: Meter Set

    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...

  • Page 7: Installation

    ▪ 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 mm .
  • Page 8 4.1. Connection Diagrams 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.

  • Page 9: Service

    5.2. Messages after the Supply Connection After connecting the supply, the meter displays the meter name N20 - L – where L is the letter marking the execution: U – voltage measurement, I – current measurement, r – measurement of Pt100 temperature, t –...
  • Page 10 One must connect the PC computer through the PD14 programmer and configure the connection choosing Communication -> Serial port from the menu (for the N20 meter we choose the address 1, baud rate 9600 kb/s, the mode RTU 8N2, timeout 1000ms and the appropriate port COM under which the controller of the PD14 programmer has been installed).
  • Page 11 After the connection configuration, one must choose Select device à à Meters à N20 (Fig.8) from the menu, confirm with Configure and next click the icon Download configuration to eCon in order to read out all parameters. To change parameters, enter the new value in the parameter window and click the Save button.
  • Page 12 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 is 0.02 V, so the choice of precision with three places after the decimal point does not give more precise measurements.
  • Page 13 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 (kV) – the result is divided by 1000.
  • Page 14 Fig. 10 Window view of the measurement parameter configuration. 5.3.2. Setting of Alarm Parameters After choosing the group: - Alarm 1 or Alarm 2, following elements are possible to be configured: alarm 1, 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.
  • Page 15 a) n-on b) n-off c) on d) off Fig. 11. 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.
  • Page 16 Fig. 12. View of the alarm 1 configuration window Fig. 13. View of the alarm 2 configuration window 5.3.3. Measured Values and Statuses After choosing the group: - measured values, following information is displayed: - measured value (displayed); - kind of input – execution; - number of the person responsible for the calibration;...
  • Page 17 5.4. Manufacturer Parameters Table 2 Parameter description Range/value Manufacturer value Display colour of the measured red, green, orange upper value Display colour of the measured red, green, orange orange middle value Display colour of the measured red, green, orange green lower value 105% of rated value Un, Upper threshold - KpH...

  • Page 18: Error Codes

    n-on, n-off, on, off, h-on, Action mode of the alarm output 1 n-on h-off Upper value of the alarm 1 105% of rated value Un, -19999…99999 switching - Aon In, or 200°C Lower value of the alarm 1 100% of rated value Un, -19999…99999 switching - Aoff In, or 100°C...

  • Page 19: Technical Data

    7. TECHNICAL DATA Measuring ranges: INPUTS: Measuring ranges of Un voltage: -11... -10...60...66 mV -1... 0... 10...11 V input resistance > 1 M -11... 10... 10...11 V Measuring ranges of In current: input resistance 10   1% -1...0... 20...22 mA input resistance 10 ...
  • Page 20 - compensation of wire  0.2% of the range resistance changes - from ambient temperature changes  (0.1% of the range/10 K) Averaging time £ 0.5s (1s by default) Alarm outputs outputs of O/C type (30 V, 20 mA), passive outputs acc. to EN 62053-31 Output to supply external transducers 24 V ...
  • Page 21 96 ´ 48 ´ 64 mm (with terminals) Overall dimensions ´ 45 Cut-out dimensions in panel +0.6 +0.6 < 0.25 kg Weight Power consumption < 6 VA Galvanic isolation between: – supply - measuring input 3.2 kV d.c. Electromagnetic compatibility: –...

  • Page 22: Execution Codes

    8. ORDERING CODES Table 3 DIGITAL PANEL METER N20 - X XX XX X Input: Pt100: - 50... 400°C ........1 thermocouple J: - 50... 1200°C ....2 thermocouple K: - 50... 1370°C ....3 0... 20 mA ...........4 4... 20 mA ...........5 ...
  • Page 23 Code of the highlighted unit Table 4 Code Unit Code Unit without unit °C °F  k ° rev. km/h on order - After agreeing with the manufacturer...
  • Page 24 00 – standard execution, – without an extra additional quality inspection certificate, Example 2: The code: N20- 5 2 38 99 8 (+ description) means: N20 – digital panel meter, – current input: 4…20 mA, – supply voltage: 20…40 V a.c/d.c. , 38 –...
  • Page 25 Overflow of lower measurement - 19999 Individual characteristic switched on Parameter a of individual characteristic 10.0 Parameter b of individual characteristic Operation kind of alarm output 1 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...

  • Page 26: Maintenance And Guarantee

    9. MAINTENANCE AND GUARANTEE The N20 digital panel meter does not require any periodical mainte- nance. In case of some incorrect operations: 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.
  • Page 28 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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