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Summary of Contents for Lumel N20Z TYPE
- Page 1 DIGITAL PANEL METER N20Z TYPE USER’S MANUAL...
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Page 3: Table Of Contents
Contents 1. APPLICATION and METER DESIGN ........... 5 2. METER SET ..............5 3. BASIC REQUIREMENTS, OPERATIONAL SAFETY ......6 4. INSTALLATION ..............7 5. SERVICE ................9 6. ERROR CODES ..............19 7. TECHNICAL DATA .............. 19 8. ORDER CODES ..............22 9. -
Page 5: Application And Meter Design
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. -
Page 6: Basic Requirements, Operational Safety
- Seal ............. 1 pc - 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, OPERATIONAL SAFETY In the safety service scope, the meter meets the requirements of the EN 61010-1 standard. -
Page 7: Installation
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. +0.6 +0.6 One must prepare a hole of 92... - Page 8 4.1. Connection diagrams Fig. 3 Electrical connections of the N20Z meter for voltage and frequency measurements Fig. 4 Electrical connections of the N20Z meter for a.c. current measurements...
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Page 9: Service
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 N20ZL After connecting the supply, the meter displays the meter name – where is the letter marking the execution: –... - Page 10 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 through the PD14 programmer and after choosing the menu Options-> 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).
- Page 11 After the connection configuration, one must choose Device Meters 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:...
- Page 12 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.
- Page 13 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.
- Page 14 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.
- Page 15 a) n-on b) n-off c) on d) off 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.
- Page 16 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.
- Page 17 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 red, green, orange red (U,I,f) measured upper value Display colour of the red, green, orange orange (U,I), green (f) measured middle value Display colour of the...
- Page 18 (continuation) Table 2 Input type AC, AC+DC 0.5 s, 1 s, 3 s, 5 s, 10 s, 15 s, 30 s, Averaging time 1 min, 2 min, 5 min, 7 min, 12 min, 15 min Upper overflow of the -19999... 99999 99999 measurement Lower overflow of the...
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Page 19: Error Codes
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 the programmed indication range. Overflow of the lower value of the programmed indication range. ErrCA Loss of meter calibration values –... - Page 20 Preheating time 30 min. Intrinsic error (at manufacturer settings): (0.5% of the range ±1 digit) in - voltage and current the frequency interval 20... 500 Hz (0.02% of the range ±1 digit) - frequency Additional errors in rated operating conditions: - from ambient temperature changes (50% of the intrinsic error/10K)
- Page 21 Ensured protection level IP 65 acc. to EN 60529 from frontal side Dimensions 64 mm (with terminals) +0.6 +0.6 Wymiary otworu w tablicy Weight < 0.25 kg Power consumption < 6 VA Electromagnetic compatibility: – immunity against electromagnetic interference acc. to EN 61000-6-2 –...
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Page 22: Order Codes
8. ORDERING CODES Execution codes of the N20Z digital meter Table 3 DIGITAL PANEL METER N20Z - X XX XX X Input: 100 V ............1 250 V ............2 400 V ............3 1 A ..............4 5 A ..............5 frequency 20... 500 Hz .......6 Supply voltage: 85... - Page 23 Code of the highlighted unit Table 4 Code Unit Code Unit without unit rev. km/h on order After agreeing with the manufacturer...
- Page 24 Ordering examples: Example 1: The code: N20Z - 3 1 01 00 8 means: N20Z – panel digital meter, – with a 400 V a.c. input, – supply voltage: 85... 253 a.c. (45... 65 Hz) or d.c. – displayed unit: V –...
- Page 25 Averaging time Overflow of upper measurement 99999 Overflow of lower measurement - 19999 Individual characteristic enabled Parameter a of individual characteristic 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...
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Page 26: Maintenance And Guarantee
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. - Page 28 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 Zak³ady Aparatów Elektrycznych LUMEL S.A. ul. Sulechowska 1, 65-022 Zielona Góra, Poland Tel.: (48-68) 329 51 00 (exchange) Fax: (48-68) 329 51 01 e-mail:lumel@lumel.com.pl...
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