Lumel NA3 Manual de usuario

DIGITAL-TO-ANALOGUE

METER WITH A MULTICOLOUR

BARGRAPH

+ SERIAL INTERFACE

NA3

SERvICE MANUAL

DIGITAL-TO-ANALOGUE

METER WITH A MULTICOLOUR

BARGRAPH

+ SERIAL INTERFACE

NA3 TYPE

CONTENTS Page

1. APPLICATION .............................................................................................5

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

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.

They can find application in various industrial fields, e.g. food industry, intermediate

pumping stations, sewage treatment plants, chemical industry, weather stations,

breweries.

The NA3 meter is made in the version:

with a 4-digit LED readout field (digit height: 7 mm) and a multicolour

bargraph.

The type choice is made in the execution code.

They are programmed by means of the keyboard and through RS-485. Meters only

with the bargraph can be programmed through RS-485.

NA3 meters realise following functions:

– measurement of the input quantity and displaying it on the display and/or the

bargraph,

– evaluation of the input signal into indication on the base of the individual linear

characteristic,

– programming of the colour and bargraph resolutions,

– signalling of alarm value setting exceeding,

– recording of the measured signal in programmed time segments,

– storage of maximal and minimal values,

– programming of the indication resolution,

– programming of the measurement averaging time,

– locking of the parameter introduction by means of a password,

– conversion of the measured quantity into a voltage or current output signal,

– service of the RS-485 interface in MODBUS protocol, both in ASCII and RTU

mode.

Fig.1. View of the NA3 meter.

2. SET OF THE NA3 METER

We deliver in the set:

- NA3 meter .................................................... 1 pc.

- user’s guide.................................................. 1 pc.

- plug with screw terminals ............................. 1 pc

- holders to fix the indicator in the panel......... 2 pcs

When unpacking the meter, please check whether the type and execution code

on the data plate correspond to the order.

3. BASIC REQUIREMENTS, SAFETY INFORMATION

Symbols located in this service manual mean:

WARNING!

Warning of potential, hazardous situations. Especially important. One must

acquaint with this before connecting the NA3 meter. The non-observance

of notices marked by these symbols can occasion severe injuries of the

personnel and the damage of the instrument.

CAUTION!

Designates a general useful note. If you observe it, handling of the

meter is made easier. 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

maintenance must be carried out by qualified, skilled personnel and national

regulations for the prevention of accidents must be observed.

Before switching the meter on, one must check the correctness of connection

to the network.

Before taking the meter housing out, one must turn the supply off.

The removal of the instrument housing during the guarantee contract period

may cause its cancellation.

4. INSTALLATION

4.1. Fitting

Prepare a ( 22.2+0.5 x 92+0.5) mm hole in the panel. The thickness of the material from

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 mm2cross-

section external conductors.

Meter dimensions are shown on the fig. 2.

4.2. External connection diagrams

The description of terminal strips are shown on the fig. 3a.

110

max115

Fig. 2. Meter overall dimension and fixing way.

a/ Description of the terminal strip

2 A and 5 A

current input

b/ Connection way of input signals

Resistance

thermometer in

two-wire system

Resistance

thermometer in

three-wire system

Thermocouple

0... 60 mV voltage

voltage input 5 mA and 20 mA

current input

RS-485 + 1 relay RS-485

+ 1 OC type output

(open collector)

2 relays

2 OC type outputs

Current or voltage

analogue output

c/ Connection way of digital and

analogue output signals,

depending on the execution code

supply

NA3 meter

...

AGND

PC Computer

PD51

GND

RxD

TxD

DB9

PC Computer

with RS-485 card

DB9

supply

NA3 meter

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.

Requirements concerning the power supply cable are regulated by EN 61010-1

p. 6.10. standard.

5. SERVICING

After connecting external signals and switching the meter on, its name

and also the current version of the program, e.g. are displayed.

After ca 3 seconds, the meter is transiting automatically into the working mode

in which it carries out the measurement and the display of the measured value

on the display and the bargraph. Depending on alarm and bargraph parameter

settings, alarm thresholds are also displayed on the bargraph. The meter blanks

automatically insignificant zeros.

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.

NA3

0102030405060708090 100

Lower alarm threshold

Escape key Acceptation

key

Increasing value key

45-element bargraph (in three-colour execution)

25-element bargraph (in seven-colour execution)

Upper alarm threshold

Fig. 4 Description of the NA3 frontal plate.

Otros manuales para NA3

Tabla de contenidos

Otros manuales de Instrumento de medición de Lumel

Manuales populares de Instrumento de medición de otras marcas

Suaoki

Suaoki D40 Manual de usuario

Elster

Elster BK-G1.6 Manual de usuario

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manual

Duratool

Duratool D03128 Manual de usuario

Vega

Vega VEGAPULS 65 Manual de usuario

Tonghui

Tonghui TH2618B Manual de usuario

Tenmars

Tenmars TM-801 Manual de usuario

MSR

MSR 145 Manual de usuario

TPS

TPS WP-82 Manual de usuario

ELMETRON

ELMETRON CP-511 Manual de usuario

PCB Piezotronics

PCB Piezotronics 003C30 Manual de usuario

Tenma

Tenma 72-10465 Manual de usuario

Endress+Hauser

Endress+Hauser Proline Promag 50 Especificaciones técnicas

Siemens

Siemens SITRANS F Coriolis FCT030 Manual de lista de piezas

KLINGER

KLINGER CMF V Series Manual de usuario

EXFO

EXFO FTB-2 Manual de operación y mantenimiento

Keysight

Keysight M8290A Manual de usuario

ADTEK

ADTEK MW-5 Manual de usuario